/* ==========================================================================
   WARM LIGHT ACADEMIC & HERITAGE DESIGN SYSTEM
   مستوحى من ألوان مكتبة الأستاذة أمل صلاح (ورق البردي الفاتح، خشب الجوز الدافئ، العنبر الذهبي، التليسكوب النحاسي)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700;800;900&family=Readex+Pro:wght@400;500;600;700&display=swap');

:root {
  --font-main: 'Cairo', 'Readex Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Bright & Warm Academic Linen Canvas */
  --bg-deep: #F7F5F0;        /* Soft comfortable warm linen background */
  --bg-surface: #FFFFFF;     /* Pure crisp ivory for header/navbar/footer */
  --bg-card: #FFFFFF;        /* Crisp clean white cards */
  --bg-card-hover: #FDFBF7;  /* Gentle warm card hover */
  --bg-input: #FCFAF6;       /* Subtle input background */
  --bg-banner: #FFF8EB;      /* Warm golden banner background */
  
  /* Signature Warm Amber & Heritage Bronze Accents */
  --accent-amber: #D97706;
  --accent-amber-light: #F59E0B;
  --accent-amber-hover: #B45309;
  --accent-amber-bg: rgba(217, 119, 6, 0.08);
  
  /* Secondary Accents */
  --accent-emerald: #059669;
  --accent-emerald-bg: rgba(5, 150, 105, 0.08);
  --accent-crimson: #DC2626;
  --accent-crimson-bg: rgba(220, 38, 38, 0.08);

  /* High-Contrast Clear Academic Typography */
  --text-heading: #1B1510;   /* Deep rich espresso walnut for headlines */
  --text-body: #3B3128;      /* Warm charcoal espresso for body text */
  --text-muted: #6E6053;     /* Readable muted secondary text */
  --text-dim: #998C7F;       /* Tertiary labels */
  
  /* Elegant Warm Borders & Shadows */
  --border-subtle: #E8E2D8;
  --border-card: #DFD7C9;
  --border-hover: #C5BAA8;
  --border-active: #D97706;
  --shadow-sm: 0 1px 3px rgba(35, 25, 20, 0.05);
  --shadow-md: 0 4px 16px -2px rgba(35, 25, 20, 0.08), 0 2px 6px -1px rgba(35, 25, 20, 0.04);
  --shadow-lg: 0 12px 32px -4px rgba(35, 25, 20, 0.12), 0 4px 12px -2px rgba(35, 25, 20, 0.06);
  --radius-default: 14px;
}

*, *::before, *::after {
  font-family: var(--font-main);
  box-sizing: border-box !important;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  width: 100% !important;
  max-width: 100vw !important;
  overflow-x: hidden !important;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-body);
  min-height: 100vh;
  width: 100% !important;
  max-width: 100vw !important;
  overflow-x: hidden !important;
  position: relative !important;
  direction: rtl;
  text-align: right;
  line-height: 1.8;
  letter-spacing: -0.01em;
}

.hidden {
  display: none !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-deep);
}
::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-amber);
}

/* Hide scrollbar utility for mobile swiping */
.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* Base Card with Clean Light Shadow */
.ui-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-default);
  box-shadow: var(--shadow-sm);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.ui-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

/* Teacher Portrait Frame - Ultra Premium Interactive Motion */
.teacher-frame {
  position: relative;
  background: var(--bg-surface);
  border: 2.5px solid var(--border-card);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 14px 36px -4px rgba(35, 25, 20, 0.12), 0 0 25px rgba(217, 119, 6, 0.15);
  animation: teacherFloatInteractive 5s ease-in-out infinite alternate;
  transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1), border-color 250ms ease, box-shadow 350ms ease;
  will-change: transform, box-shadow;
  cursor: pointer;
  -webkit-touch-callout: none !important;
  -webkit-user-select: none !important;
  -moz-user-select: none !important;
  -ms-user-select: none !important;
  user-select: none !important;
}

@keyframes teacherFloatInteractive {
  0% {
    transform: translateY(0px) rotate(0deg);
    box-shadow: 0 14px 32px -4px rgba(35, 25, 20, 0.12), 0 0 20px rgba(217, 119, 6, 0.12);
  }
  50% {
    transform: translateY(-7px) rotate(0.4deg);
    box-shadow: 0 20px 42px -6px rgba(35, 25, 20, 0.18), 0 0 35px rgba(217, 119, 6, 0.22);
  }
  100% {
    transform: translateY(-12px) rotate(-0.3deg);
    box-shadow: 0 24px 48px -8px rgba(35, 25, 20, 0.22), 0 0 45px rgba(217, 119, 6, 0.28);
  }
}

.teacher-frame:hover, .teacher-frame:active {
  border-color: var(--accent-amber);
  box-shadow: 0 28px 55px -10px rgba(217, 119, 6, 0.35), 0 0 50px rgba(217, 119, 6, 0.4);
  transform: translateY(-14px) scale(1.02);
}

/* Diagonal Light Shimmer Sweep Effect */
.teacher-frame::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.35) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(30deg);
  pointer-events: none;
  z-index: 25;
  animation: portraitShimmerSweep 6s ease-in-out infinite;
}

@keyframes portraitShimmerSweep {
  0%, 70% {
    left: -70%;
    opacity: 0;
  }
  80% {
    opacity: 1;
  }
  100% {
    left: 150%;
    opacity: 0;
  }
}

.teacher-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
  pointer-events: none !important;
  -webkit-user-drag: none !important;
  -webkit-touch-callout: none !important;
  user-select: none !important;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.teacher-frame:hover img {
  transform: scale(1.035);
}

/* Buttons */
.btn-amber {
  background: var(--accent-amber);
  color: #FFFFFF;
  font-weight: 700;
  border-radius: 12px;
  border: 1px solid var(--accent-amber);
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.25);
  transition: background-color 140ms ease-out, border-color 140ms ease-out, transform 140ms ease;
}

.btn-amber:hover {
  background: var(--accent-amber-hover);
  border-color: var(--accent-amber-hover);
  transform: translateY(-1px);
}

.btn-wood {
  background: var(--bg-surface);
  color: var(--text-heading);
  font-weight: 600;
  border: 1px solid var(--border-card);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: background-color 140ms ease-out, border-color 140ms ease-out, color 140ms ease-out;
}

.btn-wood:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

/* Grade & Admin Filter Pills */
.filter-pill {
  background: var(--bg-surface);
  border: 1px solid var(--border-card);
  color: var(--text-muted);
  border-radius: 9999px;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
  transition: all 140ms ease-out;
}

.filter-pill:hover {
  color: var(--text-heading);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.filter-pill.active {
  background: var(--accent-amber) !important;
  color: #FFFFFF !important;
  border-color: var(--accent-amber) !important;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(217, 119, 6, 0.3) !important;
}

/* Anti-Piracy Floating Watermark */
.video-watermark {
  position: absolute;
  pointer-events: none;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.45);
  font-weight: 700;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.9);
  animation: floatWatermark 22s ease-in-out infinite alternate;
  z-index: 30;
}

@keyframes floatWatermark {
  0% { top: 10%; right: 10%; }
  25% { top: 75%; right: 18%; }
  50% { top: 25%; right: 70%; }
  75% { top: 80%; right: 60%; }
  100% { top: 15%; right: 12%; }
}

/* Modal Overlay & Responsive Popups */
.modal-overlay {
  position: fixed !important;
  inset: 0 !important;
  width: 100vw !important;
  max-width: 100% !important;
  height: 100% !important;
  background: rgba(20, 15, 12, 0.75) !important;
  backdrop-filter: blur(8px) !important;
  -webkit-backdrop-filter: blur(8px) !important;
  z-index: 99999 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 12px !important;
  box-sizing: border-box !important;
  overflow-y: auto !important;
}

.modal-overlay.hidden {
  display: none !important;
}

.modal-overlay > div {
  width: 100% !important;
  max-width: 460px !important;
  max-height: 92vh !important;
  overflow-y: auto !important;
  margin: auto !important;
  box-sizing: border-box !important;
}

/* Responsive Table Styling */
.table-responsive-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ==========================================
   MOBILE SCREEN RESPONSIVENESS & ZERO OVERFLOW
   ========================================== */

nav.student-desktop-nav,
.student-desktop-nav,
#student-nav-links {
  display: none !important;
}

@media (min-width: 1024px) {
  nav.student-desktop-nav,
  .student-desktop-nav,
  #student-nav-links {
    display: flex !important;
  }
}

html, body {
  width: 100% !important;
  max-width: 100% !important;
  overflow-x: hidden !important;
  position: relative;
}

main, section, header, footer, .ui-card {
  max-width: 100% !important;
  box-sizing: border-box !important;
}

@media (max-width: 640px) {
  /* Header tight fit for small phone screens */
  header .max-w-7xl {
    gap: 6px !important;
  }

  /* Reduce Teacher portrait scale on phone */
  .teacher-frame {
    max-width: 250px !important;
    animation: none !important;
  }

  /* Prevent text wrapping issues */
  h1 span {
    word-break: normal;
  }

  /* Compact header buttons */
  #role-switcher-container button,
  #student-auth-header-btn button,
  #install-pwa-btn {
    padding: 5px 8px !important;
    font-size: 11px !important;
  }

  #notif-bell-btn {
    padding: 6px !important;
  }

  /* Notification dropdown on mobile */
  #notification-dropdown {
    width: 290px !important;
    left: -10px !important;
  }

  /* Grade filter swipe container */
  #grade-filter-container {
    width: 100% !important;
  }
}