/* ==========================================================================
   TechOrbit Live Demo: AuraEdu Prime Coaching & Education LMS Platform
   ========================================================================== */

:root {
  /* Default Theme: JEE & NEET Science Academy (Deep Violet & Emerald) */
  --lms-primary: #6366F1;
  --lms-primary-dark: #4F46E5;
  --lms-primary-light: #EEF2FF;
  --lms-accent: #10B981;
  --lms-accent-light: #ECFDF5;
  --lms-gold: #F59E0B;
  --lms-text-main: #0F172A;
  --lms-text-body: #334155;
  --lms-text-muted: #64748B;
  --lms-bg: #FFFFFF;
  --lms-bg-subtle: #F8FAFC;
  --lms-border: #E2E8F0;
  --lms-radius: 12px;
  --lms-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.06), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --lms-shadow-lg: 0 20px 35px -10px rgba(99, 102, 241, 0.18);
  --lms-font-head: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --lms-font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Preset 2: UPSC & Civil Services IAS Academy */
[data-preset="upsc"] {
  --lms-primary: #854D0E;
  --lms-primary-dark: #713F12;
  --lms-primary-light: #FEFCE8;
  --lms-accent: #D97706;
  --lms-accent-light: #FFFBEB;
}

/* Preset 3: Tech Coding Bootcamp */
[data-preset="coding"] {
  --lms-primary: #0284C7;
  --lms-primary-dark: #0369A1;
  --lms-primary-light: #F0F9FF;
  --lms-accent: #06B6D4;
  --lms-accent-light: #ECFEFF;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--lms-font-body);
  color: var(--lms-text-body);
  background-color: var(--lms-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--lms-font-head);
  color: var(--lms-text-main);
  font-weight: 700;
  line-height: 1.25;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------------- TOP DEMO TOOLBAR ---------------- */
.demo-top-bar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #0F172A;
  color: #F8FAFC;
  padding: 0.6rem 1.25rem;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--lms-primary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.demo-top-bar-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.demo-badge-live {
  background: #10B981;
  color: #FFFFFF;
  padding: 0.2rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.725rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.demo-badge-live::before {
  content: '';
  width: 7px;
  height: 7px;
  background: #FFFFFF;
  border-radius: 50%;
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.4); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.demo-top-bar-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.preset-pill-btn {
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  font-size: 0.775rem;
  cursor: pointer;
  transition: all 0.2s;
}

.preset-pill-btn:hover {
  background: rgba(255, 255, 255, 0.25);
}

.watermark-toggle-btn {
  background: #3B82F6;
  color: #FFFFFF;
  border: none;
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  font-size: 0.775rem;
  font-weight: 700;
  cursor: pointer;
}

.btn-return-techorbit {
  background: linear-gradient(135deg, #7C3AED, #EC4899);
  color: #FFFFFF;
  font-weight: 700;
  padding: 0.35rem 0.85rem;
  border-radius: 6px;
  font-size: 0.8rem;
  border: none;
  cursor: pointer;
}

/* ---------------- HEADER & NAVBAR ---------------- */
.lms-header {
  background: #FFFFFF;
  border-bottom: 1px solid var(--lms-border);
  position: sticky;
  top: 45px;
  z-index: 990;
}

.lms-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.lms-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--lms-text-main);
}

.lms-logo-icon {
  width: 38px;
  height: 38px;
  background: var(--lms-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-weight: 900;
  font-size: 1.2rem;
}

.lms-nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.lms-nav-links a {
  font-weight: 600;
  color: var(--lms-text-body);
  font-size: 0.95rem;
  transition: color 0.2s;
}

.lms-nav-links a:hover {
  color: var(--lms-primary);
}

.lms-btn-primary {
  background: var(--lms-primary);
  color: #FFFFFF !important;
  font-weight: 700;
  padding: 0.65rem 1.35rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  box-shadow: var(--lms-shadow-lg);
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.lms-btn-primary:hover {
  background: var(--lms-primary-dark);
  transform: translateY(-2px);
}

/* ---------------- HERO SECTION ---------------- */
.lms-hero {
  padding: 4.5rem 0 3.5rem;
  background: radial-gradient(circle at 85% 15%, var(--lms-primary-light) 0%, #FFFFFF 65%);
}

.lms-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.lms-hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background: var(--lms-primary-light);
  color: var(--lms-primary);
  font-size: 0.825rem;
  font-weight: 700;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.lms-hero h1 {
  font-size: 3.1rem;
  letter-spacing: -1px;
  margin-bottom: 1.25rem;
}

.lms-hero h1 span {
  color: var(--lms-primary);
}

.lms-hero p {
  font-size: 1.1rem;
  color: var(--lms-text-muted);
  margin-bottom: 2rem;
  max-width: 520px;
}

.lms-hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.lms-btn-secondary {
  padding: 0.65rem 1.35rem;
  border-radius: 8px;
  font-weight: 700;
  border: 1.5px solid var(--lms-border);
  background: #FFFFFF;
  color: var(--lms-text-main);
  cursor: pointer;
  transition: all 0.2s;
}

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

/* ---------------- DRM VIDEO PLAYER DEMO SECTION ---------------- */
.lms-player-container {
  background: #0B0F19;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #1E293B;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
  position: relative;
}

.lms-player-layout {
  display: grid;
  grid-template-columns: 1.7fr 0.8fr;
  min-height: 440px;
}

.lms-video-view {
  position: relative;
  background: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.lms-video-element {
  width: 100%;
  height: 100%;
  object-fit: cover;
  max-height: 480px;
}

/* Dynamic Moving DRM Watermark Overlay */
.drm-watermark-overlay {
  position: absolute;
  top: 25%;
  left: 30%;
  background: rgba(0, 0, 0, 0.45);
  color: rgba(255, 255, 255, 0.7);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  pointer-events: none;
  user-select: none;
  backdrop-filter: blur(2px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  animation: floatWatermark 12s infinite alternate ease-in-out;
  z-index: 20;
}

@keyframes floatWatermark {
  0%   { top: 15%; left: 10%; }
  25%  { top: 65%; left: 18%; }
  50%  { top: 20%; left: 60%; }
  75%  { top: 75%; left: 55%; }
  100% { top: 35%; left: 35%; }
}

.lms-playlist-sidebar {
  background: #111827;
  border-left: 1px solid #1F2937;
  padding: 1.25rem;
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
}

.playlist-item {
  background: #1F2937;
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 0.6rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  border: 1px solid transparent;
}

.playlist-item:hover, .playlist-item.active {
  background: #374151;
  border-color: var(--lms-primary);
}

.playlist-item.active .pl-num {
  background: var(--lms-primary);
  color: #FFFFFF;
}

.pl-num {
  width: 24px;
  height: 24px;
  background: #4B5563;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  margin-right: 0.6rem;
}

/* ---------------- NTA MOCK TEST ENGINE ---------------- */
.mock-test-container {
  background: #FFFFFF;
  border: 1.5px solid var(--lms-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--lms-shadow);
}

.mock-test-header {
  background: #0F172A;
  color: #FFFFFF;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.test-timer-badge {
  background: #DC2626;
  color: #FFFFFF;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-weight: 800;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.mock-test-body {
  display: grid;
  grid-template-columns: 2fr 1fr;
  min-height: 420px;
}

.question-area {
  padding: 2rem;
  border-right: 1px solid var(--lms-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.question-text {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--lms-text-main);
  margin-bottom: 1.5rem;
}

.options-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.15rem;
  border: 1.5px solid var(--lms-border);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
}

.option-item:hover {
  background: var(--lms-bg-subtle);
  border-color: var(--lms-primary);
}

.option-item.selected {
  background: var(--lms-primary-light);
  border-color: var(--lms-primary);
  font-weight: 700;
  color: var(--lms-primary-dark);
}

.question-palette-sidebar {
  background: var(--lms-bg-subtle);
  padding: 1.5rem;
}

.palette-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  margin: 1rem 0 1.5rem;
}

.palette-btn {
  height: 38px;
  border-radius: 8px;
  border: 1px solid var(--lms-border);
  background: #FFFFFF;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.palette-btn.current {
  border-color: #0F172A;
  box-shadow: 0 0 0 2px #0F172A;
}

.palette-btn.answered {
  background: #10B981;
  color: #FFFFFF;
  border-color: #10B981;
}

.palette-btn.review {
  background: #8B5CF6;
  color: #FFFFFF;
  border-color: #8B5CF6;
}

/* ---------------- FEE INSTALLMENT CALCULATOR ---------------- */
.fee-calc-card {
  background: #FFFFFF;
  border: 1px solid var(--lms-border);
  border-radius: 16px;
  padding: 2.25rem;
  box-shadow: var(--lms-shadow);
}

.fee-schedule-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.25rem;
  font-size: 0.9rem;
}

.fee-schedule-table th {
  background: var(--lms-bg-subtle);
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--lms-border);
}

.fee-schedule-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--lms-border);
}

/* ---------------- MOBILE NAVIGATION DRAWER & BUTTON ---------------- */
.lms-header-actions {
  display: flex;
  gap: 0.65rem;
  align-items: center;
}

.lms-hamburger-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  border: 1.5px solid var(--lms-border);
  background: #FFFFFF;
  color: var(--lms-text-main);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

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

.lms-mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1998;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.lms-mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}

.lms-mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100vh;
  background: #FFFFFF;
  z-index: 1999;
  box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
  padding: 1.5rem;
  overflow-y: auto;
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.lms-mobile-drawer.open {
  transform: translateX(0);
  visibility: visible;
}

.lms-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--lms-border);
}

.lms-drawer-close {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #F1F5F9;
  border: none;
  color: var(--lms-text-main);
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lms-drawer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1.25rem 0;
}

.lms-drawer-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.85rem;
  border-radius: 8px;
  color: var(--lms-text-body);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
}

.lms-drawer-link:hover {
  background: var(--lms-primary-light);
  color: var(--lms-primary);
}

.lms-drawer-footer {
  padding-top: 1.25rem;
  border-top: 1px solid var(--lms-border);
}

/* ---------------- GRID & COMPONENT UTILITY CLASSES ---------------- */
.lms-batches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.fee-inputs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.fee-table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.lms-notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.lms-whatsapp-sim-card {
  background: linear-gradient(135deg, #064E3B 0%, #0F172A 100%);
  border-radius: 20px;
  padding: 3rem;
  color: #FFFFFF;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
}

.lms-modal-window {
  background: #FFFFFF;
  border-radius: 20px;
  max-width: 650px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.25rem;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
}

.res-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.dash-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.mock-test-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--lms-border);
  padding-top: 1.25rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------------- RESPONSIVENESS & MOBILE SYSTEM ---------------- */
html, body {
  overflow-x: hidden;
  max-width: 100%;
  width: 100%;
}

img, video {
  max-width: 100%;
  height: auto;
}

@media (max-width: 992px) {
  .lms-hero-grid, .lms-player-layout, .mock-test-body {
    grid-template-columns: 1fr;
  }

  .lms-player-layout {
    min-height: auto;
  }

  .lms-nav-links {
    display: none;
  }

  .lms-hamburger-btn {
    display: flex;
  }

  .lms-whatsapp-sim-card {
    grid-template-columns: 1fr;
    padding: 2rem;
    gap: 1.75rem;
  }

  .fee-inputs-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  /* Top Demo Bar */
  .demo-top-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 0.6rem 0.85rem;
    gap: 0.6rem;
  }

  .demo-top-bar-left {
    justify-content: space-between;
    font-size: 0.8rem;
    width: 100%;
  }

  .demo-top-bar-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }

  .preset-pill-btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.725rem;
  }

  .watermark-toggle-btn, .btn-return-techorbit {
    padding: 0.25rem 0.6rem;
    font-size: 0.725rem;
  }

  /* LMS Nav */
  .lms-header {
    top: 0;
  }

  .lms-nav {
    height: 64px;
  }

  .lms-logo span:first-child {
    font-size: 1.1rem !important;
  }

  .lms-logo-icon {
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }

  .student-auth-actions .lms-btn-secondary {
    padding: 0.45rem 0.75rem !important;
    font-size: 0.75rem !important;
  }

  .student-auth-actions .lms-btn-primary {
    padding: 0.45rem 0.85rem !important;
    font-size: 0.75rem !important;
  }

  /* Hero Section */
  .lms-hero {
    padding: 2.5rem 0 2rem;
  }

  .lms-hero h1 {
    font-size: 2.15rem;
    letter-spacing: -0.5px;
  }

  .lms-hero p {
    font-size: 0.95rem;
  }

  .lms-hero-buttons {
    flex-direction: column;
    width: 100%;
    align-items: stretch;
  }

  .lms-hero-buttons button,
  .lms-hero-buttons a {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  /* DRM Player */
  .lms-player-container {
    border-radius: 12px;
  }

  .drm-watermark-overlay {
    font-size: 0.65rem;
    padding: 0.25rem 0.5rem;
  }

  /* Mock Test */
  .mock-test-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
  }

  .mock-test-header > div:last-child {
    width: 100%;
    justify-content: space-between;
  }

  .question-area {
    padding: 1.25rem;
  }

  .question-text {
    font-size: 1rem;
  }

  .question-palette-sidebar {
    padding: 1.25rem;
  }

  .mock-test-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .mock-test-actions > div {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    width: 100%;
    gap: 0.5rem;
  }

  .mock-test-actions button {
    width: 100%;
    justify-content: center;
    padding: 0.55rem 0.4rem !important;
    font-size: 0.8rem !important;
  }

  /* Fee Calculator */
  .fee-calc-card {
    padding: 1.25rem;
    border-radius: 12px;
  }

  .fee-schedule-table {
    min-width: 480px;
  }

  /* Modals */
  .lms-modal-window {
    padding: 1.25rem;
    border-radius: 14px;
    max-height: 92vh;
  }

  .res-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .dash-stats-grid {
    grid-template-columns: 1fr;
  }

  .form-row-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .lms-hero h1 {
    font-size: 1.85rem;
  }

  .lms-batches-grid, .lms-notes-grid {
    grid-template-columns: 1fr;
  }

  .student-auth-actions .lms-btn-secondary span {
    display: inline;
  }

  .palette-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 0.35rem;
  }
}