/* =========================================================
   Khaled Karrar — Personal Site
   Medical + Engineering minimal theme
========================================================= */

:root{
  /* Light theme */
  --color-bg: #f7fafc;
  --color-bg-alt: #ffffff;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-text: #1a2233;
  --color-text-muted: #5b6b7d;

  --color-primary: #0e7490;      /* medical blue */
  --color-primary-dark: #0c5c73;
  --color-secondary: #14b8a6;    /* turquoise */
  --color-secondary-light: #5eead4;

  --shadow-soft: 0 8px 24px rgba(15, 60, 80, 0.08);
  --shadow-hover: 0 16px 36px rgba(15, 60, 80, 0.16);

  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 10px;

  --font-ar: 'Tajawal', 'Cairo', sans-serif;
  --font-en: 'Inter', 'Poppins', sans-serif;

  --transition-base: 0.35s cubic-bezier(.4,0,.2,1);
}

html[data-theme="dark"]{
  --color-bg: #0b1220;
  --color-bg-alt: #101a2c;
  --color-surface: #131f33;
  --color-border: #22314a;
  --color-text: #eaf2f6;
  --color-text-muted: #93a4bb;

  --color-primary: #22b8cf;
  --color-primary-dark: #1a93a8;
  --color-secondary: #2dd4bf;
  --color-secondary-light: #5eead4;

  --shadow-soft: 0 8px 28px rgba(0,0,0,0.35);
  --shadow-hover: 0 18px 40px rgba(0,0,0,0.5);
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-ar);
  transition: background var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

.container{
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

a{ text-decoration: none; color: inherit; }
ul{ margin:0; padding:0; }
img,svg{ display:block; }

/* =========================
   Header & User Badge
========================= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg-alt) 80%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), border-color var(--transition-base);
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.brand{
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-shape{
  width: 42px;
  height: 42px;
  display: inline-flex;
  flex-shrink: 0;
}
.logo-shape.small{ width: 38px; height: 38px; }

.logo-hex{ width: 100%; height: 100%; }
.hex-fill{
  fill: var(--color-primary);
  transition: fill var(--transition-base);
}
.hex-text{
  fill: #ffffff;
  font-size: 34px;
  font-family: 'Poppins', 'Inter', sans-serif;
  font-weight: 700;
  text-anchor: middle;
}

.brand-name{
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.brand-ar{
  font-family: var(--font-ar);
  font-weight: 800;
  font-size: 1.05rem;
}
.brand-en{
  font-family: var(--font-en);
  font-size: 0.72rem;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
}

.main-nav{
  display: flex;
  align-items: center;
  gap: 28px;
}
.main-nav a{
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  position: relative;
  padding: 6px 2px;
  transition: color var(--transition-base);
}
.main-nav a:hover{ color: var(--color-primary); }

.header-actions{
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-badge-btn{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 25%, transparent);
  padding: 8px 16px;
  border-radius: 999px;
  font-family: var(--font-ar);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-base);
}
.user-badge-btn:hover{
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.icon-btn{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  justify-content: center;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-base);
}
#lang-toggle{ width: auto; padding: 0 14px; }
.icon-btn:hover{
  border-color: var(--color-secondary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.nav-toggle{ display: none; }

/* Welcome bar for logged in students */
.welcome-bar{
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  color: #ffffff;
  padding: 10px 0;
  font-size: 0.92rem;
  font-weight: 700;
}
.welcome-bar-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.btn-logout{
  background: rgba(255,255,255,0.2);
  border: none;
  color: #fff;
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-ar);
  font-weight: 700;
  font-size: 0.82rem;
  transition: background 0.2s;
}
.btn-logout:hover{ background: rgba(255,255,255,0.35); }

/* =========================
   Hero
========================= */
.hero{
  position: relative;
  padding: 90px 0 70px;
  overflow: hidden;
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-secondary) 6%, var(--color-bg)) 0%, var(--color-bg) 65%);
}

.hero-bg{
  position: absolute;
  inset: 0;
  top: 40%;
  display: flex;
  align-items: center;
  opacity: 0.55;
  pointer-events: none;
}

.ecg-svg{ width: 220%; height: 130px; }
.ecg-path{
  fill: none;
  stroke: var(--color-secondary);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1600;
  stroke-dashoffset: 1600;
  animation: ecg-draw 3.2s linear infinite, ecg-move 14s linear infinite;
}
.ecg-path-2{ opacity: 0.35; animation-delay: -1.6s, -7s; }

@keyframes ecg-draw{
  0%{ stroke-dashoffset: 1600; }
  60%{ stroke-dashoffset: 0; }
  100%{ stroke-dashoffset: -200; }
}
@keyframes ecg-move{
  0%{ transform: translateX(0); }
  100%{ transform: translateX(-45%); }
}

.hero-inner{
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  align-items: center;
  gap: 40px;
}

.hero-title{
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 20px;
}
.text-gradient{
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle{
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.9;
  max-width: 580px;
  margin: 0 0 32px;
}

.hero-cta{
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-base);
}

.btn-primary{
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  box-shadow: var(--shadow-soft);
}
.btn-primary:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.btn-ghost{
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-ghost:hover{
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-3px);
}

.pulse-btn{ position: relative; }
.pulse-btn::before{
  content:"";
  position: absolute;
  inset: 0;
  border-radius: 999px;
  border: 2px solid var(--color-secondary);
  animation: pulse-ring 2.4s ease-out infinite;
  pointer-events: none;
}
@keyframes pulse-ring{
  0%{ transform: scale(1); opacity: 0.6; }
  80%{ transform: scale(1.12); opacity: 0; }
  100%{ opacity: 0; }
}

.hero-visual{ display: flex; justify-content: center; }
.hero-badge-circle{
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: linear-gradient(145deg, color-mix(in srgb, var(--color-primary) 18%, transparent), color-mix(in srgb, var(--color-secondary) 22%, transparent));
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-soft);
  animation: float-y 5s ease-in-out infinite;
}
.hero-icon{
  font-size: 4.2rem;
  color: var(--color-primary);
  animation: heart-beat 2.2s ease-in-out infinite;
}
@keyframes float-y{
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-14px); }
}
@keyframes heart-beat{
  0%,100%{ transform: scale(1); }
  15%{ transform: scale(1.15); }
  30%{ transform: scale(1); }
  45%{ transform: scale(1.1); }
  60%{ transform: scale(1); }
}

/* =========================
   Section Head
========================= */
.section-head{
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}
.section-tag{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: color-mix(in srgb, var(--color-secondary) 15%, transparent);
  color: var(--color-primary-dark);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 14px;
}
html[data-theme="dark"] .section-tag{ color: var(--color-secondary-light); }

.section-head h2{
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  font-weight: 800;
  margin: 0 0 14px;
}
.section-head p{
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* =========================
   COURSES GRID (PRIMARY STUDENT VIEW)
========================= */
.courses-section{ padding: 80px 0; }

.courses-grid{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 40px 32px;
  perspective: 1400px;
}

.book-card{
  background: transparent;
  border: none;
  padding: 0;
  box-shadow: none;
  cursor: pointer;
  display: block;
  transform-style: preserve-3d;
}

.book-3d{
  position: relative;
  min-height: 340px;
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(.2,.7,.3,1);
  transform: rotateY(0deg);
}

.book-card:hover .book-3d{
  transform: rotateY(-14deg) translateY(-10px);
}
html[dir="ltr"] .book-card:hover .book-3d{
  transform: rotateY(14deg) translateY(-10px);
}

/* The spine: a thin dark strip along the binding edge */
.book-spine{
  position: absolute;
  top: 4px; bottom: 4px;
  width: 22px;
  right: -6px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--book-color) 85%, black 25%), var(--book-color));
  border-radius: 4px 0 0 4px;
  transform: translateZ(-14px) rotateY(18deg);
  box-shadow: inset 2px 0 6px rgba(0,0,0,0.35);
}
html[dir="ltr"] .book-spine{ right: auto; left: -6px; border-radius: 0 4px 4px 0; }

/* Fanned page edges peeking out on the opposite side */
.book-pages-edge{
  position: absolute;
  top: 8px; bottom: 8px;
  left: 2px;
  width: 10px;
  background: repeating-linear-gradient(180deg, #f5f0e6, #f5f0e6 3px, #e6ddc8 3px, #e6ddc8 4px);
  border-radius: 0 3px 3px 0;
  box-shadow: 2px 0 4px rgba(0,0,0,0.15);
  transform: translateZ(-10px);
}
html[dir="ltr"] .book-pages-edge{ left: auto; right: 2px; border-radius: 3px 0 0 3px; }

.book-cover{
  position: relative;
  height: 100%;
  min-height: 340px;
  background: linear-gradient(150deg, var(--book-color), color-mix(in srgb, var(--book-color) 65%, black 20%));
  border-radius: 14px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 18px 34px rgba(0,0,0,0.25), inset 0 0 0 1px rgba(255,255,255,0.08);
  color: #fff;
  transform: translateZ(0);
  overflow: hidden;
}
.book-cover::before{
  /* embossed double-frame like a hardcover book */
  content: '';
  position: absolute;
  inset: 12px;
  border: 1.5px solid rgba(255,255,255,0.35);
  border-radius: 8px;
  pointer-events: none;
}
.book-cover::after{
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(255,255,255,0.18), transparent 45%);
  pointer-events: none;
}

.book-cover-icon{
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
}

.book-cover .course-card-title{ color: #fff; margin: 0 0 10px; }
.book-cover .course-card-desc{ color: rgba(255,255,255,0.85); min-height: 44px; }
.book-cover .course-card-meta{ margin-top: auto; margin-bottom: 16px; }
.book-cover .count-badge{
  background: rgba(255,255,255,0.14);
  color: #fff;
  border-color: rgba(255,255,255,0.3);
}
.book-cover .btn-open-course{
  background: rgba(255,255,255,0.95);
  color: var(--book-color);
  border: none;
}
.book-cover .btn-open-course:hover{ background: #fff; }
.book-card:hover .btn-open-course{ background: #fff; color: var(--book-color); }

/* Book opening burst when a card is clicked, right before the modal appears */
@keyframes bookCoverOpen{
  0%{ transform: rotateY(0deg) scale(1); }
  45%{ transform: rotateY(-45deg) scale(1.03); box-shadow: 0 30px 50px rgba(0,0,0,0.4); }
  100%{ transform: rotateY(-90deg) scale(0.96); opacity: 0.4; }
}
.book-card.book-opening .book-cover{
  animation: bookCoverOpen 0.62s cubic-bezier(.4,0,.3,1) forwards;
  transform-origin: right center;
}
html[dir="ltr"] .book-card.book-opening .book-cover{ transform-origin: left center; }

.course-card-title{
  font-size: 1.25rem;
  font-weight: 800;
  margin: 0 0 10px;
}
.course-card-desc{
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  margin: 0 0 20px;
  min-height: 50px;
}

.course-card-meta{
  margin-bottom: 22px;
}
.count-badge{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--color-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn-open-course{
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  color: var(--color-primary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 20%, transparent);
  border-radius: var(--radius-sm);
  font-family: var(--font-ar);
  font-weight: 800;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-base);
}
.course-card:hover .btn-open-course{
  background: var(--color-primary);
  color: #ffffff;
}

/* =========================
   MODALS & POPUPS
========================= */
.modal-backdrop{
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(10, 18, 30, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal-backdrop.active{
  opacity: 1;
  pointer-events: auto;
}

.modal-card{
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  padding: 32px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3);
  position: relative;
  transform: scale(0.92) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.modal-backdrop.active .modal-card{
  transform: scale(1) translateY(0);
}

.modal-card.large-modal{
  max-width: 820px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

/* ============ Book Modal (open-book styling for the course popup) ============ */
.book-modal{
  --book-accent: #0e7490;
  background: linear-gradient(180deg, var(--color-surface), color-mix(in srgb, var(--book-accent) 6%, var(--color-surface)));
  border-top: 6px solid var(--book-accent);
  position: relative;
  overflow: hidden;
}
.book-modal::before{
  /* center gutter shadow like an open book's spine crease */
  content: '';
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 60px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(0,0,0,0.14), transparent 70%);
  pointer-events: none;
}
.book-modal-spine-shadow{ display: none; }

@keyframes bookFlipIn{
  0%{ transform: rotateY(-95deg) scale(0.92); opacity: 0.3; }
  100%{ transform: rotateY(0deg) scale(1); opacity: 1; }
}
.modal-backdrop.book-modal-backdrop .book-modal{
  transform-origin: right center;
}
html[dir="ltr"] .modal-backdrop.book-modal-backdrop .book-modal{ transform-origin: left center; }
.modal-backdrop.book-flip-in .book-modal{
  animation: bookFlipIn 0.65s cubic-bezier(.3,.1,.2,1);
}

.toc-heading{
  display: block;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--book-accent);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close{
  position: absolute;
  top: 20px;
  left: 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all 0.2s;
}
.modal-close:hover{ color: #ff4d4d; border-color: #ff4d4d; }

.modal-header{
  text-align: center;
  margin-bottom: 24px;
}
.login-icon-box{
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-primary) 15%, transparent);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}
.modal-header h3{ font-size: 1.4rem; font-weight: 800; margin: 0 0 6px; }
.modal-header p{ color: var(--color-text-muted); font-size: 0.9rem; margin: 0; }

.form-group{ margin-bottom: 20px; text-align: right; }
.form-group label{ display: block; font-weight: 700; font-size: 0.9rem; margin-bottom: 8px; }
.form-group input{
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-ar);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus{ border-color: var(--color-primary); }

.duplicate-warning{
  margin-top: 10px;
  padding: 10px 14px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.login-actions{ display: flex; flex-direction: column; gap: 12px; }
.w-full{ width: 100%; justify-content: center; }

.guest-note{
  margin-top: 20px;
  padding: 12px 16px;
  background: color-mix(in srgb, var(--color-secondary) 12%, transparent);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Course Modal Head */
.course-modal-head{
  display: flex;
  align-items: center;
  gap: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}
.course-modal-icon{
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}
.course-modal-head h2{ font-size: 1.4rem; font-weight: 800; margin: 0 0 4px; }
.course-modal-head p{ color: var(--color-text-muted); font-size: 0.9rem; margin: 0; }
.course-modal-actions{ margin-inline-start: auto; }

.btn-download-all{
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 999px;
  font-family: var(--font-ar);
  font-weight: 800;
  font-size: 0.9rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
  transition: all 0.2s;
}
.btn-download-all:hover{ transform: translateY(-2px); box-shadow: 0 6px 18px rgba(16, 185, 129, 0.4); }

/* Course Modal Body */
.course-modal-body{
  padding-top: 20px;
  overflow-y: auto;
  max-height: 60vh;
}
.lectures-list-container{ display: flex; flex-direction: column; gap: 18px; }

.lecture-item-card{
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.25s;
}
.lecture-item-card.open{ border-color: color-mix(in srgb, var(--book-accent, var(--color-primary)) 45%, transparent); }

.lec-item-head{
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-ar);
  text-align: inherit;
  color: var(--color-text);
}
.lec-chapter-num{
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--book-accent, var(--color-primary)) 15%, transparent);
  color: var(--book-accent, var(--color-primary));
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.lec-item-head-text{ flex: 1; min-width: 0; }
.lec-item-head h4{ font-size: 1.05rem; font-weight: 800; margin: 0 0 4px; }
.lec-desc{ color: var(--color-text-muted); font-size: 0.88rem; margin: 0; }
.lec-chevron{
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: transform 0.3s ease;
}
.lecture-item-card.open .lec-chevron{ transform: rotate(180deg); color: var(--book-accent, var(--color-primary)); }

.formats-wrapper{
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  padding: 0 20px;
  transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
}
.lecture-item-card.open .formats-wrapper{
  max-height: 600px;
  opacity: 1;
  padding: 0 20px 20px;
}
.formats-heading{ font-size: 0.82rem; font-weight: 700; color: var(--color-text-muted); display: block; margin-bottom: 10px; }
.formats-list{ display: flex; flex-direction: column; gap: 10px; }

.format-choice-chip{
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  gap: 12px;
  flex-wrap: wrap;
  opacity: 0;
  animation: chipFadeIn 0.4s ease forwards;
}
@keyframes chipFadeIn{
  from{ opacity: 0; transform: translateY(8px); }
  to{ opacity: 1; transform: translateY(0); }
}
.fmt-label{ font-size: 0.9rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.fmt-actions{ display: flex; align-items: center; gap: 8px; }

.btn-fmt-view{
  background: color-mix(in srgb, var(--color-primary) 12%, transparent);
  color: var(--color-primary);
  border: none;
  padding: 6px 14px;
  border-radius: 999px;
  font-family: var(--font-ar);
  font-weight: 700;
  font-size: 0.82rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}
.btn-fmt-view:hover{ background: var(--color-primary); color: #fff; }

.btn-fmt-download{
  background: var(--color-primary);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: 999px;
  font-family: var(--font-ar);
  font-weight: 700;
  font-size: 0.82rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}
.btn-fmt-download:hover{ background: var(--color-primary-dark); }

.lectures-empty-box{ text-align: center; padding: 40px 20px; color: var(--color-text-muted); }
.lectures-empty-box i{ font-size: 2.8rem; color: var(--color-secondary); margin-bottom: 12px; display: block; }

/* Preview Modal */
@keyframes previewPopIn{
  0%{ transform: scale(0.8); opacity: 0; }
  100%{ transform: scale(1); opacity: 1; }
}
.modal-backdrop.preview-pop-in .preview-modal-card{
  animation: previewPopIn 0.4s cubic-bezier(.34,1.56,.64,1);
}
.preview-modal-card{
  max-width: 900px;
  width: 95vw;
  height: 85vh;
  display: flex;
  flex-direction: column;
  padding: 20px;
}
.preview-header{ display: flex; justify-content: space-between; align-items: center; padding-bottom: 12px; border-bottom: 1px solid var(--color-border); }
.preview-header h3{ margin: 0; font-size: 1.1rem; }
.preview-body{ flex: 1; margin-top: 14px; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.preview-iframe{ width: 100%; height: 100%; border: none; border-radius: var(--radius-sm); }
.preview-video{ max-width: 100%; max-height: 100%; border-radius: var(--radius-sm); }
.preview-img{ max-width: 100%; max-height: 100%; object-fit: contain; }
.preview-fallback{ text-align: center; padding: 40px; }
.fallback-icon{ font-size: 3rem; color: var(--color-primary); margin-bottom: 16px; }

/* =========================
   ANIMATIONS OVERLAY FOR NAMES (GATES, KNIGHTS, MULTI-POPS)
========================= */
.animation-overlay{
  position: fixed;
  inset: 0;
  z-index: 2500;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.animation-overlay.active{
  opacity: 1;
  pointer-events: auto;
}

/* Floating Emojis (Waleed) */
.floating-emoji{
  position: absolute;
  bottom: -60px;
  font-size: 3.8rem;
  animation: floatUp 2.8s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}
@keyframes floatUp{
  0%{ transform: translateY(0) scale(0.5); opacity: 0; }
  20%{ opacity: 1; }
  100%{ transform: translateY(-115vh) scale(1.6); opacity: 0; }
}

/* Multi-Popping Badges (Nour, Reem, Yameen, Zainab) */
.multi-pop-badge{
  position: absolute;
  background: linear-gradient(135deg, #0e7490, #14b8a6);
  color: #ffffff;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 1.3rem;
  font-weight: 800;
  box-shadow: 0 12px 35px rgba(14, 116, 144, 0.45);
  border: 2px solid rgba(255,255,255,0.4);
  animation: multiPop 2.8s ease-in-out forwards;
  white-space: nowrap;
}
.multi-pop-badge.theme-nour{
  background: linear-gradient(135deg, #ec4899, #8b5cf6);
  box-shadow: 0 12px 35px rgba(236, 72, 153, 0.45);
}
.multi-pop-badge.theme-reem{
  background: linear-gradient(135deg, #f59e0b, #ef4444);
  box-shadow: 0 12px 35px rgba(245, 158, 11, 0.45);
}
.multi-pop-badge.theme-jaal{
  background: linear-gradient(135deg, #059669, #0d9488);
  box-shadow: 0 12px 35px rgba(5, 150, 105, 0.45);
}

@keyframes multiPop{
  0%{ transform: scale(0.2) rotate(-8deg); opacity: 0; }
  25%{ transform: scale(1.1) rotate(0deg); opacity: 1; }
  75%{ transform: scale(1) rotate(2deg); opacity: 1; }
  100%{ transform: scale(0.8) translateY(-30px); opacity: 0; }
}

/* 3D Gate opening system with realistic 3D characters pushing doors */
.animation-overlay {
  position: fixed;
  inset: 0;
  z-index: 2500;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1600px;
  perspective-origin: 50% 50%;
}

.gate-wrapper {
  position: absolute;
  inset: 0;
  display: flex;
  background: radial-gradient(circle at center, #1e293b 0%, #080c14 100%);
  perspective: 1600px;
  transform-style: preserve-3d;
  overflow: hidden;
}

.gate-door {
  width: 50%;
  height: 100%;
  background: linear-gradient(145deg, #1e293b 0%, #0f172a 60%, #020617 100%);
  border: 6px solid #334155;
  box-shadow: inset 0 0 100px rgba(0,0,0,0.95), 0 0 50px rgba(0,0,0,0.8);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 10;
  transition: transform 2.4s cubic-bezier(0.22, 1, 0.36, 1), opacity 2.4s ease;
  transform-style: preserve-3d;
  backface-visibility: hidden;
}

.gate-door-left {
  left: 0;
  border-right: 5px solid #0e7490;
  transform-origin: left center;
  background-image: 
    repeating-linear-gradient(45deg, rgba(255,255,255,0.025) 0px, rgba(255,255,255,0.025) 20px, transparent 20px, transparent 40px),
    linear-gradient(135deg, #1e293b, #0f172a);
}

.gate-door-right {
  right: 0;
  border-left: 5px solid #0e7490;
  transform-origin: right center;
  background-image: 
    repeating-linear-gradient(-45deg, rgba(255,255,255,0.025) 0px, rgba(255,255,255,0.025) 20px, transparent 20px, transparent 40px),
    linear-gradient(135deg, #1e293b, #0f172a);
}

.gate-door-pattern {
  width: 75%;
  height: 80%;
  border: 3px solid rgba(14, 116, 144, 0.4);
  border-radius: 16px;
  box-shadow: inset 0 0 30px rgba(14, 116, 144, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
  padding: 20px;
}

.gate-handle-wrapper {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 15;
  transform-style: preserve-3d;
}
.gate-door-left .gate-handle-wrapper { right: 30px; }
.gate-door-right .gate-handle-wrapper { left: 30px; }

.gate-handle {
  width: 65px;
  height: 65px;
  border-radius: 50%;
  border: 4px solid #f59e0b;
  background: radial-gradient(circle, #fef08a 0%, #b45309 100%);
  box-shadow: 0 0 35px rgba(245, 158, 11, 0.9), inset 0 0 12px rgba(0,0,0,0.6);
}

/* 3D Gate Swinging Open Backwards into 3D space */
.animation-overlay.gates-open .gate-door-left {
  transform: rotateY(-120deg) translateZ(-50px);
  opacity: 0.1;
}

.animation-overlay.gates-open .gate-door-right {
  transform: rotateY(120deg) translateZ(-50px);
  opacity: 0.1;
}

.gate-stage {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1;
  padding: 30px;
  text-align: center;
  background: radial-gradient(circle at center, rgba(14, 116, 144, 0.35) 0%, rgba(15, 23, 42, 0.98) 80%);
  transform: scale(0.85);
  opacity: 0;
  transition: transform 1.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 1.2s ease;
}

.animation-overlay.gates-open .gate-stage {
  transform: scale(1);
  opacity: 1;
}

.characters-row{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 60px;
  margin-bottom: 24px;
}

.char-card{
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: charBounce 1.5s ease-in-out infinite alternate;
}
.char-card:nth-child(2){ animation-delay: 0.2s; }

.char-icon-box{
  font-size: 4.5rem;
  background: rgba(255,255,255,0.1);
  border: 3px solid rgba(255,255,255,0.2);
  width: 110px;
  height: 110px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
  backdrop-filter: blur(10px);
}

.char-title{
  margin-top: 10px;
  background: #0e7490;
  color: #fff;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 800;
}

@keyframes charBounce{
  0%{ transform: translateY(0); }
  100%{ transform: translateY(-12px); }
}

.gate-welcome-banner{
  background: linear-gradient(135deg, #0e7490, #14b8a6);
  color: #ffffff;
  padding: 20px 40px;
  border-radius: var(--radius-lg);
  font-size: 1.6rem;
  font-weight: 800;
  box-shadow: 0 15px 40px rgba(0,0,0,0.5);
  border: 2px solid rgba(255,255,255,0.3);
  max-width: 90%;
  line-height: 1.5;
  animation: bannerPopIn 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes bannerPopIn{
  0%{ transform: scale(0.5); opacity: 0; }
  100%{ transform: scale(1); opacity: 1; }
}

/* Toast */
.custom-toast{
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(40px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 1rem;
  box-shadow: var(--shadow-hover);
  z-index: 3000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  align-items: center;
  gap: 10px;
}
.custom-toast.show{
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Contact Pills in Footer */
.footer-contacts{
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.contact-pill{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
  transition: all 0.2s;
}
.contact-pill:hover{
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}
.whatsapp-pill{
  background: rgba(37, 211, 102, 0.1);
  color: #128c7e;
  border-color: rgba(37, 211, 102, 0.3);
}
.whatsapp-pill:hover{
  background: #25d366;
  color: #fff;
}

/* =========================
   About & Footer
========================= */
.about{ padding: 80px 0; background: var(--color-bg-alt); }
.about-content{ max-width: 720px; margin: 0 auto; text-align: center; }
.about-content p{ color: var(--color-text-muted); line-height: 1.95; font-size: 1.02rem; margin: 0 0 18px; }
.about-stats{ display: flex; justify-content: center; gap: 48px; margin-top: 34px; flex-wrap: wrap; }
.stat{ display: flex; flex-direction: column; align-items: center; gap: 4px; }
.stat-num{ font-size: 2rem; font-weight: 800; color: var(--color-primary); }

/* =========================================================
   AI Assistant Section Styles
========================================================= */
.ai-assistant-section {
  padding: 50px 0 20px;
  position: relative;
}

.nav-ai-link {
  color: var(--color-primary) !important;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.ai-card {
  background: var(--color-surface);
  border: 1px solid color-mix(in srgb, var(--color-primary) 30%, var(--color-border));
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.ai-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

.ai-header-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  transition: background 0.2s;
  margin-bottom: 0;
  flex-wrap: wrap;
  gap: 16px;
}

.ai-header-toggle:hover {
  background: color-mix(in srgb, var(--color-primary) 6%, transparent);
}

.ai-toggle-indicator {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-primary) 12%, var(--color-bg));
  border: 1px solid color-mix(in srgb, var(--color-primary) 30%, transparent);
  color: var(--color-primary);
  font-weight: 800;
  font-size: 0.9rem;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.ai-header-toggle:hover .ai-toggle-indicator {
  background: var(--color-primary);
  color: #ffffff;
}

.ai-card.expanded .ai-toggle-indicator {
  background: color-mix(in srgb, var(--color-primary) 15%, var(--color-bg));
}

.ai-card.expanded #ai-toggle-icon {
  transform: rotate(180deg);
}

.ai-card-body {
  margin-top: 24px;
  border-top: 1px dashed color-mix(in srgb, var(--color-primary) 30%, var(--color-border));
  padding-top: 24px;
  animation: expandAiBody 0.35s ease-out;
}

@keyframes expandAiBody {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.ai-tag {
  background: rgba(14, 116, 144, 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(14, 116, 144, 0.2);
}

.ai-main-title {
  font-size: 1.65rem;
  font-weight: 800;
  margin: 8px 0 6px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.ai-model-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 800;
  border-radius: 999px;
  box-shadow: 0 4px 12px rgba(20, 184, 166, 0.25);
}

.ai-subtitle {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0;
  line-height: 1.6;
}

/* Sources Bar */
.ai-sources-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 20px;
  background: var(--color-bg);
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.source-field label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-text);
  margin-bottom: 8px;
}

.source-field label i {
  color: var(--color-primary);
}

.ai-select {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  outline: none;
  transition: all 0.2s;
}

.ai-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 116, 144, 0.15);
}

/* Chips Bar */
.ai-chips-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.ai-chip-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.ai-chip-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, var(--color-bg));
  transform: translateY(-2px);
}

/* Input Box Area */
.ai-input-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  transition: border-color 0.2s;
}

.ai-input-card:focus-within {
  border-color: var(--color-primary);
}

.ai-file-preview-container {
  margin-bottom: 12px;
}

.file-preview-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: color-mix(in srgb, var(--color-primary) 12%, var(--color-surface));
  border: 1px solid color-mix(in srgb, var(--color-primary) 30%, transparent);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
}

.btn-remove-file {
  background: none;
  border: none;
  color: #ef4444;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}

.ai-textarea-wrapper textarea {
  width: 100%;
  border: none;
  background: transparent;
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.98rem;
  outline: none;
  resize: vertical;
  line-height: 1.65;
  min-height: 80px;
}

.ai-input-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
  flex-wrap: wrap;
  gap: 12px;
}

.left-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ai-icon-action-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.2s;
}

.ai-icon-action-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: scale(1.05);
}

.recording-active {
  background: #ef4444 !important;
  color: #ffffff !important;
  border-color: #ef4444 !important;
  animation: micPulse 1.2s infinite;
}

@keyframes micPulse {
  0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
  70% { box-shadow: 0 0 0 12px rgba(239, 68, 68, 0); }
  100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.ai-send-btn {
  gap: 10px;
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 800;
}

/* AI Response Box */
.ai-response-container {
  margin-top: 26px;
  border: 1px solid color-mix(in srgb, var(--color-primary) 35%, var(--color-border));
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-primary) 3%, var(--color-surface));
  padding: 22px;
  animation: fadeInResponse 0.4s ease;
}

@keyframes fadeInResponse {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.ai-response-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 14px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.response-head-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--color-primary);
}

.response-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.response-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.response-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.speaking-active {
  background: var(--color-primary) !important;
  color: #ffffff !important;
  border-color: var(--color-primary) !important;
}

.ai-response-body {
  line-height: 1.85;
  color: var(--color-text);
  font-size: 1rem;
}

.ai-response-body h1, .ai-response-body h2, .ai-response-body h3 {
  color: var(--color-primary);
  margin: 18px 0 10px;
  font-weight: 800;
}

.ai-response-body ul, .ai-response-body ol {
  padding-right: 24px;
  margin: 12px 0;
}

.ai-response-body li {
  margin-bottom: 8px;
}

.ai-response-body pre {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 14px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  direction: ltr;
  text-align: left;
  font-family: monospace;
}

.ai-response-body blockquote {
  border-right: 4px solid var(--color-primary);
  margin: 14px 0;
  padding: 8px 16px;
  background: var(--color-bg);
  color: var(--color-text-muted);
}

@media (max-width: 760px) {
  .ai-sources-bar {
    grid-template-columns: 1fr;
  }
  .ai-card {
    padding: 20px;
  }
}

.site-footer{ background: var(--color-surface); border-top: 1px solid var(--color-border); padding: 46px 0 0; }
.footer-inner{ display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-bottom: 34px; flex-wrap: wrap; }
.footer-brand{ display: flex; align-items: center; gap: 12px; }
.footer-tag{ color: var(--color-text-muted); font-size: 0.82rem; margin: 4px 0 0; }
.footer-bottom{ border-top: 1px solid var(--color-border); padding: 18px 0; text-align: center; color: var(--color-text-muted); font-size: 0.82rem; }

.reveal{ opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

@media (max-width: 960px){
  .hero-inner{ grid-template-columns: 1fr; text-align: center; }
  .hero-subtitle{ margin-inline: auto; }
  .hero-cta{ justify-content: center; }
  .hero-visual{ order: -1; }
}

.header-batch-pill {
  background: color-mix(in srgb, var(--color-secondary) 25%, transparent);
  color: var(--color-primary);
  border: 1px solid var(--color-secondary);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 0.72rem;
  font-weight: 800;
  margin-inline-start: 4px;
}

.welcome-batch-tag {
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 800;
  color: #ffffff;
}

.btn-switch-batch {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-ar);
  font-weight: 700;
  font-size: 0.82rem;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-switch-batch:hover {
  background: rgba(255, 255, 255, 0.35);
}

.batch-filter-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ar);
}

.batch-filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.batch-filter-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--color-primary) 35%, transparent);
}

.batch-filter-btn.active .batch-btn-count {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

.batch-btn-count {
  background: color-mix(in srgb, var(--color-text-muted) 15%, transparent);
  color: var(--color-text-muted);
  border-radius: 999px;
  padding: 1px 7px;
  font-size: 0.72rem;
  font-weight: 800;
}

.empty-batch-courses {
  text-align: center;
  padding: 50px 20px;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  grid-column: 1 / -1;
}

.empty-batch-courses i {
  font-size: 3rem;
  color: var(--color-secondary);
  margin-bottom: 12px;
}

@media (max-width: 760px){
  .main-nav{
    position: fixed;
    inset: 72px 0 auto 0;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 18px 24px;
    gap: 16px;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-soft);
  }
  .main-nav.open{ transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-toggle{ display: inline-flex; }
  .footer-inner{ flex-direction: column; text-align: center; }
  .format-choice-chip{ flex-direction: column; align-items: flex-start; }
  .fmt-actions{ width: 100%; justify-content: flex-end; }
}

/* ============ Mobile APK & PWA Styling ============ */
.btn-apk-header {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: color-mix(in srgb, #10b981 12%, var(--color-surface));
  border: 1px solid color-mix(in srgb, #10b981 40%, transparent);
  color: #10b981;
  padding: 8px 14px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-apk-header:hover {
  background: #10b981;
  color: #ffffff;
  border-color: #10b981;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

.btn-apk-hero {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  color: #ffffff !important;
  border: none;
  padding: 13px 22px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
  transition: all 0.25s ease;
}

.btn-apk-hero:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.45);
}

.apk-modal-card {
  max-width: 580px;
  width: 92%;
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
}

.apk-modal-header {
  text-align: center;
  margin-bottom: 22px;
}

.apk-icon-circle {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: linear-gradient(135deg, #059669, #10b981);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2.3rem;
  margin-bottom: 14px;
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
}

.apk-modal-header h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 6px;
}

.apk-modal-header p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.apk-action-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  transition: all 0.2s ease;
}

.apk-action-card.direct-apk-action {
  background: color-mix(in srgb, #10b981 12%, var(--color-surface));
  border: 2px solid #10b981;
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.2);
  position: relative;
}

.apk-badge-hot {
  display: inline-block;
  background: #10b981;
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 20px;
  margin-bottom: 6px;
}

.apk-share-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.btn-direct-apk {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #ffffff;
  border: none;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
  transition: all 0.2s;
}

.btn-direct-apk:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn-copy-apk-link {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.82rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-copy-apk-link:hover {
  background: var(--color-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-whatsapp-share {
  background: #25d366;
  color: #ffffff;
  border: none;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 0.82rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-whatsapp-share:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
}

.apk-action-card.highlight-action {
  background: color-mix(in srgb, #0284c7 12%, var(--color-surface));
  border: 1.5px solid #0284c7;
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.15);
}

.highlight-action .apk-card-icon {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: #ffffff;
}

.apk-action-card.primary-action {
  background: color-mix(in srgb, var(--color-primary) 10%, var(--color-surface));
  border: 1.5px solid var(--color-primary);
}

.apk-action-card.secondary-action {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
}

.apk-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.primary-action .apk-card-icon {
  background: var(--color-primary);
  color: #ffffff;
}

.secondary-action .apk-card-icon {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.apk-card-info {
  flex: 1;
  text-align: right;
}

.apk-card-info h4 {
  font-size: 0.96rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 3px;
}

.apk-card-info p {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  margin: 0;
}

.btn-apk-install {
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 800;
  font-size: 0.88rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  transition: all 0.2s;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--color-primary) 35%, transparent);
}

.btn-apk-install:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.btn-ghost-apk {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 700;
  font-size: 0.82rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-ghost-apk:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.apk-features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.apk-feat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text);
}

.apk-feat-item i {
  color: #10b981;
  font-size: 1rem;
}

.apk-steps-box {
  background: color-mix(in srgb, #f59e0b 8%, var(--color-surface));
  border: 1px dashed color-mix(in srgb, #f59e0b 40%, transparent);
  border-radius: 12px;
  padding: 14px 16px;
  text-align: right;
  margin-top: 14px;
}

.apk-steps-box h5 {
  font-size: 0.88rem;
  font-weight: 800;
  color: #d97706;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.apk-steps-box ol {
  padding-right: 20px;
  margin: 0;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Floating Bottom Install Banner */
.mobile-install-bar {
  position: fixed;
  bottom: 16px;
  left: 16px;
  right: 16px;
  z-index: 999;
  background: rgba(15, 23, 42, 0.94);
  backdrop-filter: blur(14px);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: 16px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  animation: slideUpBanner 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUpBanner {
  from { transform: translateY(100px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.mobile-install-info {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #ffffff;
}

.app-icon-mini {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0284c7, #06b6d4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.1rem;
}

.mobile-install-info strong {
  display: block;
  font-size: 0.88rem;
}

.mobile-install-info span {
  font-size: 0.74rem;
  color: #94a3b8;
}

.mobile-install-btns {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-banner-install {
  background: linear-gradient(135deg, #059669, #10b981);
  color: #ffffff;
  border: none;
  padding: 8px 16px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.btn-banner-close {
  background: rgba(255, 255, 255, 0.1);
  color: #94a3b8;
  border: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 600px) {
  .apk-action-card {
    flex-direction: column;
    text-align: center;
  }
  .apk-card-info {
    text-align: center;
  }
  .apk-features-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   BATCH 43 DUAL DASHBOARD & NOTIFICATIONS & OFFLINE VAULT
========================================================= */

.nav-batch-highlight {
  background: linear-gradient(135deg, #0e7490, #0891b2);
  color: #ffffff !important;
  padding: 5px 14px;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(14, 116, 144, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.offline-badge {
  background: #f59e0b;
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 5px;
  animation: pulse 2s infinite;
}

.notif-bell-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition-base);
}

.notif-bell-btn:hover {
  transform: scale(1.05);
  border-color: #f59e0b;
  color: #d97706;
}

.notif-count-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: #ef4444;
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 800;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-bg);
}

/* Batch 43 Section Container */
.batch43-dashboard-section {
  padding: 40px 0 60px;
  background: var(--color-bg);
}

.batch43-header-card {
  background: linear-gradient(135deg, rgba(14, 116, 144, 0.08), rgba(20, 184, 166, 0.08));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 30px;
  margin-bottom: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.batch43-badge-title h2 {
  margin: 8px 0 4px;
  font-size: 1.6rem;
  color: var(--color-text);
}

.batch43-badge-title p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.pill-43 {
  background: linear-gradient(135deg, #0e7490, #0891b2);
  color: #ffffff;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.batch43-tab-toggles {
  display: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 4px;
  border-radius: 999px;
  gap: 4px;
}

.batch43-tab-toggles .tab-btn {
  background: transparent;
  border: none;
  padding: 8px 18px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition-base);
}

.batch43-tab-toggles .tab-btn.active {
  background: var(--color-primary);
  color: #ffffff;
}

/* Split View Grid */
.batch43-split-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  align-items: start;
}

.split-side {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-soft);
}

.split-panel-header {
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}

.split-panel-header .head-title {
  display: flex;
  align-items: center;
  gap: 14px;
}

.split-panel-header .head-title i {
  font-size: 1.8rem;
}

.right-panel-head i {
  color: #d97706;
}

.left-panel-head i {
  color: var(--color-primary);
}

.split-panel-header h3 {
  margin: 0;
  font-size: 1.25rem;
  color: var(--color-text);
}

.split-panel-header span {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.panel-sub-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 20px;
}

.panel-sub-card:last-child {
  margin-bottom: 0;
}

.sub-card-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  position: relative;
}

.sub-card-title h4 {
  margin: 0;
  font-size: 0.98rem;
  color: var(--color-text);
}

.live-pulse-dot {
  width: 9px;
  height: 9px;
  background: #22c55e;
  border-radius: 50%;
  display: inline-block;
  animation: pulse-green 1.5s infinite;
  margin-right: auto;
}

@keyframes pulse-green {
  0% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
  100% { transform: scale(0.9); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

/* Notifications Feed */
.notifications-feed {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.notif-card-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 12px 14px;
  transition: var(--transition-base);
  position: relative;
}

.notif-card-item:hover {
  border-color: #f59e0b;
}

.notif-card-item.urgent {
  border-right: 4px solid #ef4444;
  background: rgba(239, 68, 68, 0.04);
}

.notif-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.notif-card-head strong {
  font-size: 0.92rem;
  color: var(--color-text);
}

.notif-time {
  font-size: 0.74rem;
  color: var(--color-text-muted);
}

.notif-msg {
  font-size: 0.85rem;
  color: var(--color-text);
  line-height: 1.5;
  margin: 0 0 8px;
}

.notif-hall-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #fef3c7;
  color: #92400e;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}

html[data-theme="dark"] .notif-hall-tag {
  background: #78350f;
  color: #fef3c7;
}

/* ============ Schedules & Timetables Section ============ */
.schedules-section {
  padding: 60px 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  opacity: 1 !important;
  visibility: visible !important;
  transform: none !important;
}

.schedules-section .section-head,
.schedules-section .schedules-grid {
  opacity: 1 !important;
  visibility: visible !important;
  transform: none !important;
}

/* Schedules View Switcher (Weekly Timetable vs Official Cards) */
.schedule-view-switcher {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 16px auto 0;
  max-width: 440px;
  background: var(--color-surface);
  padding: 4px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.view-switch-btn {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-family: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.view-switch-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px color-mix(in srgb, var(--color-primary) 35%, transparent);
}

/* Interactive Weekly Timetable Container */
.interactive-timetable-wrap {
  margin: 26px 0 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 18px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  padding: 20px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.timetable-header-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.timetable-header-info h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 4px;
}

.timetable-header-info p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0;
}

.timetable-quick-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-timetable-action {
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-timetable-action:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-surface);
}

.timetable-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 8px;
  text-align: center;
  min-width: 680px;
}

.timetable-table th {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #ffffff;
  padding: 12px 10px;
  border-radius: 10px;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.timetable-table td.day-cell {
  background: color-mix(in srgb, var(--color-primary) 10%, var(--color-surface));
  color: var(--color-primary);
  font-weight: 800;
  padding: 14px 10px;
  border-radius: 10px;
  font-size: 0.95rem;
  white-space: nowrap;
  vertical-align: middle;
  border: 1px solid color-mix(in srgb, var(--color-primary) 25%, transparent);
}

.timetable-table td.slot-cell {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 10px 8px;
  vertical-align: middle;
  min-height: 64px;
  transition: all 0.2s ease;
}

.timetable-table td.slot-cell:hover {
  border-color: var(--color-primary);
  background: var(--color-surface);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(14, 116, 144, 0.08);
}

.timetable-table td.empty-slot {
  color: var(--color-text-muted);
  font-size: 0.82rem;
  background: var(--color-surface-hover, #f8fafc);
  opacity: 0.7;
}

.timetable-course-pill {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 6px;
  margin-bottom: 5px;
  background: #e0f2fe;
  color: #0369a1;
}

.timetable-course-pill.practical {
  background: #dcfce7;
  color: #15803d;
}

.timetable-course-pill.exams {
  background: #fee2e2;
  color: #b91c1c;
}

.timetable-course-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.35;
}

.timetable-hall-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.74rem;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2px 7px;
  border-radius: 6px;
}

.timetable-footer-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* 3 Schedule Category Buttons (Lectures / Practical / Exams) */
.schedule-category-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 18px 0 10px;
}

.sched-cat-btn {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 10px 22px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.22s ease;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.sched-cat-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(14, 116, 144, 0.15);
}

.sched-cat-btn.active {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-color: transparent;
  color: #ffffff;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--color-primary) 35%, transparent);
}

.sched-cat-btn.active i {
  color: #ffffff;
}

/* Category Badge on Schedule Card */
.sched-cat-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #fdf2f8;
  color: #be185d;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  border: 1px solid #fbcfe8;
}

html[data-theme="dark"] .sched-cat-tag {
  background: #831843;
  color: #fce7f3;
  border-color: #db2777;
}

.sched-cat-tag.practical {
  background: #f0fdf4;
  color: #15803d;
  border-color: #bbf7d0;
}

html[data-theme="dark"] .sched-cat-tag.practical {
  background: #14532d;
  color: #dcfce7;
  border-color: #22c55e;
}

.sched-cat-tag.exams {
  background: #fffbeb;
  color: #b45309;
  border-color: #fde68a;
}

html[data-theme="dark"] .sched-cat-tag.exams {
  background: #78350f;
  color: #fef3c7;
  border-color: #f59e0b;
}

.schedules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 24px;
  margin-top: 28px;
}

@media (max-width: 640px) {
  .schedules-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

/* Schedules Feed inside Sidebar / Split */
.schedules-feed {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.schedule-card-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.schedule-card-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.09);
  border-color: var(--color-primary);
}

.schedule-card-top-bar {
  padding: 16px 18px 12px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.schedule-badges-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.sched-batch-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #eff6ff;
  color: #1d4ed8;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  border: 1px solid #bfdbfe;
}

html[data-theme="dark"] .sched-batch-tag {
  background: #1e3a8a;
  color: #dbeafe;
  border-color: #3b82f6;
}

.sched-sem-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: #f0fdf4;
  color: #15803d;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  border: 1px solid #bbf7d0;
}

html[data-theme="dark"] .sched-sem-tag {
  background: #14532d;
  color: #dcfce7;
  border-color: #22c55e;
}

.sched-card-title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.4;
}

.sched-desc-text {
  margin: 0;
  font-size: 0.84rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.schedule-image-wrap {
  width: 100%;
  height: 260px;
  overflow: hidden;
  background: #0f172a;
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.schedule-card-item:not(.compact) .schedule-image-wrap {
  height: 320px;
}

.schedule-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transition: transform 0.3s ease, filter 0.3s ease;
}

.schedule-image-wrap:hover img {
  transform: scale(1.03);
}

.schedule-hover-pill {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  backdrop-filter: blur(6px);
  pointer-events: none;
  opacity: 0.9;
  transition: opacity 0.2s ease;
}

.schedule-image-wrap:hover .schedule-hover-pill {
  opacity: 1;
  background: rgba(3, 105, 161, 0.95);
}

.schedule-info-bar {
  padding: 12px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.sched-time-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.sched-actions-btns {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-open-image {
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.btn-open-image:hover {
  opacity: 0.9;
  transform: scale(1.02);
}

.btn-download-schedule {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.btn-download-schedule:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.empty-schedule-box {
  grid-column: 1 / -1;
  padding: 48px 24px;
  text-align: center;
  background: var(--color-surface);
  border: 2px dashed var(--color-border);
  border-radius: 20px;
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 16px 0;
  transition: all 0.25s ease;
}

.empty-schedule-box .empty-icon-wrap {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: color-mix(in srgb, #f59e0b 12%, var(--color-bg));
  color: #d97706;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.9rem;
  margin-bottom: 14px;
}

html[data-theme="dark"] .empty-schedule-box .empty-icon-wrap {
  background: color-mix(in srgb, #f59e0b 20%, #1e293b);
  color: #fbbf24;
}

.empty-schedule-box h4 {
  margin: 0 0 8px;
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--color-text);
}

.empty-schedule-box p {
  margin: 0;
  font-size: 0.92rem;
  max-width: 480px;
  line-height: 1.6;
}

/* Courses Grid inside Split Left Side */
.batch43-courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

/* Offline Vault Section */
.offline-vault-section {
  padding: 40px 0;
  background: var(--color-bg);
}

.vault-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-soft);
}

.vault-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}

.vault-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.vault-title i {
  font-size: 1.8rem;
  color: #10b981;
}

.vault-title h3 {
  margin: 0;
  font-size: 1.25rem;
  color: var(--color-text);
}

.vault-title p {
  margin: 2px 0 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.btn-clear-vault {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 6px 14px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.offline-files-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.offline-file-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.offline-file-info {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
}

.offline-file-info i {
  font-size: 1.5rem;
  color: var(--color-primary);
}

.offline-file-info .file-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.offline-file-info .file-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.btn-view-offline {
  background: #10b981;
  color: #ffffff;
  border: none;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.empty-vault-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 30px;
  color: var(--color-text-muted);
}

.empty-vault-state i {
  font-size: 2.4rem;
  color: #cbd5e1;
  margin-bottom: 10px;
}

/* Responsive Split Layout for Phones */
@media (max-width: 900px) {
  .batch43-split-container {
    grid-template-columns: 1fr;
  }
  .batch43-tab-toggles {
    display: flex;
  }
  .split-side {
    display: none;
  }
  .split-side.active-tab {
    display: block;
  }
}