/* =========================================
   Koran Test v2.0 - Custom Styles
   Theme: Dark Mode (Cyan Primary)
   ========================================= */

/* 1. Google Font Import */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* Color Palette & Layout Variables */
:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-surface: rgba(30, 41, 59, 0.5);
  --border: #334155;
  --primary: #22d3ee;
  --primary-hover: #06b6d4;
  --primary-dark: #0891b2;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --success: #34d399;
  --warning: #fbbf24;
  --error: #f87171;

  /* Mobile Layout System Variables */
  --mobile-header-height: 3.5rem;
  --mobile-nav-height: 4rem;
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  --mobile-bottom-spacing: calc(var(--mobile-nav-height) + var(--safe-area-bottom) + 2.5rem);
}

/* 2. Base Styles */
html {
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  -webkit-tap-highlight-color: transparent;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100%;
  overflow-x: hidden;
}

.pt-safe {
  padding-top: env(safe-area-inset-top, 0px);
  padding-top: constant(safe-area-inset-top, 0px);
}

.pb-safe {
  padding-bottom: env(safe-area-inset-bottom, 0px);
  padding-bottom: constant(safe-area-inset-bottom, 0px);
}

/* Mobile Main Layout Bottom Spacing & Responsive Navigation Fix */
@media (max-width: 767px) {
  main.main-content {
    padding-top: calc(var(--mobile-header-height) + env(safe-area-inset-top, 0px) + 0.75rem) !important;
    padding-bottom: var(--mobile-bottom-spacing) !important;
  }
  #main-topnav,
  #main-footer,
  footer {
    display: none !important;
  }
  #mobile-header {
    display: block !important;
  }
  /* Mobile nav: always show on mobile — JS controls via .hidden class */
  #mobile-nav {
    display: block !important;
  }
}

@media (min-width: 768px) {
  #main-topnav,
  #main-footer,
  footer {
    display: block !important;
  }
  #mobile-header,
  #mobile-nav {
    display: none !important;
  }
}

/* .hidden class hides #mobile-nav everywhere (including mobile) */
#mobile-nav.hidden {
  display: none !important;
}

/* Fullscreen Views (test-screen & admin): Hide all navigation elements */
body.hide-navs #main-topnav,
body.hide-navs #mobile-header,
body.hide-navs #mobile-nav,
body.hide-navs #main-footer,
body.hide-navs footer {
  display: none !important;
}

::selection {
  background-color: var(--primary);
  color: var(--bg-primary);
}

/* 8. Scrollbar Styling (Dark Theme) */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

/* 6. Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes slideOutRight {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100%); }
}
@keyframes pulse-warning {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* 3. Page View System */
.page-view {
  display: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.page-view.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* 4. Numpad Button Styles */
.numpad-btn {
  min-width: 65px;
  min-height: 65px;
  transition: all 0.1s ease;
}
@media (max-width: 640px) {
  .numpad-btn {
    min-width: 48px;
    min-height: 52px;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    font-size: 1.25rem;
  }
}
.numpad-btn:active {
  transform: scale(0.92);
}

/* 5. Toast Notification System */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 60;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
  pointer-events: none;
}
@media (max-width: 767px) {
  #toast-container, .toast-container {
    top: calc(var(--mobile-header-height) + env(safe-area-inset-top, 0px) + 0.5rem) !important;
    right: 0.75rem !important;
    left: auto !important;
    align-items: flex-end !important;
    max-width: calc(100vw - 1.5rem) !important;
  }
  .toast {
    min-width: 240px !important;
    max-width: 100% !important;
    width: auto !important;
  }
}
.toast {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-left: 4px solid var(--primary);
  padding: 0.875rem 1.125rem;
  border-radius: 0.5rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
  animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: auto;
  min-width: 250px;
  max-width: 380px;
}
.toast.toast-success { border-left-color: var(--success); }
.toast.toast-warning { border-left-color: var(--warning); }
.toast.toast-error { border-left-color: var(--error); }
.toast.toast-exit { animation: slideOutRight 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

/* 7. Utility Classes */
.no-select { user-select: none; }
.animate-fade-in { animation: fadeIn 0.3s ease forwards; }
.timer-warning {
  color: var(--error);
  animation: pulse-warning 1s infinite;
}
.dark-admin { background-color: var(--bg-primary); }
.badge-locked {
  opacity: 0.4;
  filter: grayscale(1);
}
.badge-earned {
  box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.05); /* cyan-500/30 ring + shadow */
}

/* 9. Podium Styles for Leaderboard */
.podium-gold {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(217, 119, 6, 0.2));
  border: 1px solid var(--warning);
}
.podium-silver {
  background: linear-gradient(135deg, rgba(148, 163, 184, 0.2), rgba(71, 85, 105, 0.2));
  border: 1px solid #94a3b8;
}
.podium-bronze {
  background: linear-gradient(135deg, rgba(180, 83, 9, 0.2), rgba(120, 53, 15, 0.2));
  border: 1px solid #b45309;
}

/* 10. Admin Sidebar */
.admin-sidebar {
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border);
}
.admin-sidebar-item {
  color: var(--text-secondary);
  transition: all 0.2s;
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.admin-sidebar-item:hover {
  color: var(--primary);
  background-color: rgba(34, 211, 238, 0.05);
}
.admin-sidebar-item.active {
  color: var(--primary);
  background-color: rgba(34, 211, 238, 0.1);
  font-weight: 500;
}

/* 11. Article Card hover effect */
.article-card {
  transition: transform 0.2s ease;
  overflow: hidden;
}
.article-card:hover {
  transform: scale(1.02);
}
.article-card-image {
  transition: transform 0.3s ease;
}
.article-card:hover .article-card-image {
  transform: scale(1.05);
}

/* 12. Tab active indicator */
.tab-btn {
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
  padding: 0.75rem 1rem;
  font-weight: 500;
}
.tab-btn:hover {
  color: var(--primary);
}
.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* 13. Custom Thin Dark Theme Scrollbar */
.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
.custom-scrollbar::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.6);
  border-radius: 9999px;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
  background: rgba(51, 65, 85, 0.8);
  border-radius: 9999px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: rgba(6, 182, 212, 0.6);
}

/* 14. Modal & Notification UI Enhancements */
@keyframes modalPopIn {
  0% {
    opacity: 0;
    transform: scale(0.96) translateY(8px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-card {
  animation: modalPopIn 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}