/* Clanect Mobile Application - Premium iOS Design System */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --color-indigo: #6366F1;
  --color-indigo-light: #EEF2FF;
  --color-indigo-dark: #4338CA;
  --color-sky: #60A5FA;
  --color-sky-light: #EFF6FF;
  --color-mint: #6EE7B7;
  --color-mint-light: #ECFDF5;
  --color-mint-dark: #059669;
  --color-lavender: #C4B5FD;
  --color-lavender-light: #F5F3FF;
  --color-white: #FFFFFF;
  --color-bg: #F8FAFC;
  --color-card-bg: #FFFFFF;
  --color-text-main: #0F172A;
  --color-text-sub: #64748B;
  --color-text-muted: #94A3B8;
  --color-border: #E2E8F0;
  
  --radius-card: 28px;
  --radius-pill: 9999px;
  --radius-button: 20px;
  
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 10px 25px -5px rgba(99, 102, 241, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 35px -10px rgba(99, 102, 241, 0.15), 0 10px 15px -5px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.35);
  
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

body {
  font-family: var(--font-family);
  background-color: #0f172a;
  color: var(--color-text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px;
  overflow-x: hidden;
}

/* Mobile Frame Wrapper for Desktop Preview & Mobile Viewport */
.device-frame {
  width: 100%;
  max-width: 430px;
  height: 880px;
  background-color: var(--color-bg);
  border-radius: 48px;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.6), inset 0 0 0 10px #1E293B;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

@media (max-width: 480px) {
  body {
    padding: 0;
    background-color: var(--color-bg);
  }
  .device-frame {
    max-width: 100%;
    height: 100vh;
    border-radius: 0;
    box-shadow: none;
  }
}

/* Dynamic iOS Status Bar */
.status-bar {
  height: 48px;
  padding: 14px 24px 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text-main);
  z-index: 100;
}
.status-bar-icons {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* App Header */
.app-header {
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 90;
  position: sticky;
  top: 0;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-logo-small {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-indigo), var(--color-sky), var(--color-lavender));
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
  border-radius: 14px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  font-size: 20px;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  position: relative;
  transition: var(--transition-bounce);
}
.brand-logo-small i {
  animation: iconMiniPulse 2.5s ease-in-out infinite;
}
@keyframes iconMiniPulse {
  0%, 100% { transform: scale(1) rotate(0deg); }
  50% { transform: scale(1.12) rotate(-5deg); }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.brand-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--color-indigo-dark), var(--color-indigo));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.header-actions {
  display: flex;
  gap: 10px;
}
.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 16px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--color-text-main);
  font-size: 18px;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
  position: relative;
}
.icon-btn:active {
  transform: scale(0.92);
}
.badge-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 10px;
  height: 10px;
  background-color: #EF4444;
  border: 2px solid var(--color-white);
  border-radius: 50%;
}

/* Scrollable Screen Content Container */
.screen-container {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px 100px 20px;
  scroll-behavior: smooth;
}
.screen-container::-webkit-scrollbar {
  display: none;
}

/* Screen Visibility */
.screen {
  display: none;
  animation: fadeIn 0.35s ease-out;
}
.screen.active {
  display: block;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* iOS Floating Bottom Navigation Bar */
.bottom-nav-container {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  height: 72px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 28px;
  display: flex;
  justify-content: space-around;
  align-items: center;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.8);
  z-index: 95;
}
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: var(--color-text-sub);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  padding: 8px 12px;
  border-radius: 18px;
}
.nav-item i {
  font-size: 20px;
  transition: var(--transition-bounce);
}
.nav-item.active {
  color: var(--color-indigo);
  background: var(--color-indigo-light);
}
.nav-item.active i {
  transform: translateY(-2px) scale(1.15);
}

/* Common Card Styling - 28px iOS Radius */
.card {
  background: var(--color-card-bg);
  border-radius: var(--radius-card);
  padding: 22px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(226, 232, 240, 0.7);
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
}
.card-hover:active {
  transform: scale(0.98);
}

/* Typography & Headers */
.section-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text-main);
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.see-all {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-indigo);
  cursor: pointer;
}

/* 1. Splash Screen */
.splash-wrapper {
  min-height: 720px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 40px 20px;
  text-align: center;
  background: linear-gradient(180deg, #EEF2FF 0%, #F8FAFC 100%);
}
.splash-content {
  margin-auto: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.splash-icon {
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, var(--color-indigo), var(--color-sky), var(--color-lavender));
  background-size: 200% 200%;
  animation: gradientShift 5s ease infinite, float3DTilt 4s ease-in-out infinite;
  border-radius: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 60px;
  color: white;
  margin-bottom: 32px;
  position: relative;
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.4), 0 0 50px rgba(99, 102, 241, 0.25);
  cursor: pointer;
  transition: var(--transition-bounce);
}

/* Rotating Gradient Aura Ring */
.splash-icon::before {
  content: '';
  position: absolute;
  top: -6px;
  left: -6px;
  right: -6px;
  bottom: -6px;
  border-radius: 44px;
  background: linear-gradient(45deg, #6366F1, #6EE7B7, #60A5FA, #C4B5FD, #6366F1);
  background-size: 300% 300%;
  z-index: -1;
  animation: auraRotate 4s linear infinite;
  opacity: 0.85;
  filter: blur(2px);
}

/* Pulsing Outer Expanding Glow Halo */
.splash-icon::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 40px;
  background: rgba(99, 102, 241, 0.4);
  z-index: -2;
  animation: pulseHalo 2.5s ease-out infinite;
}

.splash-icon i {
  animation: iconGlowPulse 2.5s ease-in-out infinite;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.25));
}

.splash-icon:active {
  transform: scale(0.92) rotate(-6deg);
}

@keyframes float3DTilt {
  0%, 100% {
    transform: translateY(0px) rotate(0deg) scale(1);
  }
  25% {
    transform: translateY(-12px) rotate(-3deg) scale(1.03);
  }
  50% {
    transform: translateY(-16px) rotate(0deg) scale(1.05);
  }
  75% {
    transform: translateY(-8px) rotate(3deg) scale(1.02);
  }
}

@keyframes auraRotate {
  0% { background-position: 0% 50%; transform: rotate(0deg); }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; transform: rotate(360deg); }
}

@keyframes pulseHalo {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.45);
    opacity: 0;
  }
}

@keyframes iconGlowPulse {
  0%, 100% {
    transform: scale(1) rotate(0deg);
    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.25));
  }
  50% {
    transform: scale(1.18) rotate(-8deg);
    filter: drop-shadow(0 8px 20px rgba(255, 255, 255, 0.8));
  }
}

.splash-title {
  font-size: 38px;
  font-weight: 800;
  color: var(--color-text-main);
  letter-spacing: -1px;
  margin-bottom: 10px;
}
.splash-subtitle {
  font-size: 16px;
  color: var(--color-text-sub);
  line-height: 1.5;
  max-width: 280px;
}
.btn-primary {
  width: 100%;
  padding: 18px;
  background: linear-gradient(135deg, var(--color-indigo), var(--color-indigo-dark));
  color: white;
  font-size: 16px;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-button);
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: var(--transition-bounce);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}
.btn-primary:active {
  transform: scale(0.96);
}

/* 2. Login Screen */
.form-group {
  margin-bottom: 16px;
  text-align: left;
}
.form-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-sub);
  margin-bottom: 6px;
  display: block;
}
.form-input {
  width: 100%;
  padding: 16px;
  background: #F1F5F9;
  border: 1.5px solid transparent;
  border-radius: 18px;
  font-size: 15px;
  font-family: inherit;
  color: var(--color-text-main);
  outline: none;
  transition: var(--transition-fast);
}
.form-input:focus {
  background: white;
  border-color: var(--color-indigo);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

/* 3. Home Dashboard */
.welcome-banner {
  background: linear-gradient(135deg, var(--color-indigo), #4F46E5);
  color: white;
  position: relative;
  overflow: hidden;
}
.welcome-banner::after {
  content: '🎓';
  position: absolute;
  right: -10px;
  bottom: -15px;
  font-size: 90px;
  opacity: 0.25;
}
.welcome-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 6px;
}
.welcome-sub {
  font-size: 14px;
  opacity: 0.9;
}

/* Unit 2 Studying Tracker Card */
.study-tracker-card {
  background: linear-gradient(135deg, #ECFDF5, #D1FAE5);
  border: 1px solid var(--color-mint);
}
.study-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--color-mint-dark);
  color: white;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 10px;
}
.study-count-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-text-main);
}
.study-avatars {
  display: flex;
  margin-top: 10px;
  align-items: center;
}
.avatar-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid white;
  margin-left: -8px;
  background-size: cover;
  background-position: center;
}
.avatar-circle:first-child {
  margin-left: 0;
}

/* Ongoing Class Pill Card */
.current-class-card {
  background: linear-gradient(135deg, var(--color-sky-light), #DBEAFE);
  border-left: 6px solid var(--color-sky);
}

/* Birthday Reminder Pills */
.birthday-pill {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-lavender-light);
  border: 1px solid var(--color-lavender);
  padding: 12px 18px;
  border-radius: 20px;
  margin-bottom: 12px;
}

/* Shortcuts Grid */
.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.shortcut-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-main);
  cursor: pointer;
}
.shortcut-icon {
  width: 56px;
  height: 56px;
  border-radius: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  color: white;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-bounce);
}
.shortcut-item:active .shortcut-icon {
  transform: scale(0.9);
}

/* Floating Action Button (FAB) for Instant Push Notifications */
.fab-btn {
  position: absolute;
  bottom: 104px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #EF4444, #F43F5E);
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 26px;
  box-shadow: 0 10px 25px rgba(239, 68, 68, 0.4);
  border: none;
  cursor: pointer;
  z-index: 92;
  transition: var(--transition-bounce);
}
.fab-btn:active {
  transform: scale(0.9);
}

/* 4. Timetable Screen */
.day-selector {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 18px;
}
.day-selector::-webkit-scrollbar { display: none; }
.day-chip {
  padding: 10px 18px;
  border-radius: 18px;
  background: white;
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-sub);
  cursor: pointer;
  white-space: nowrap;
}
.day-chip.active {
  background: var(--color-indigo);
  color: white;
  border-color: var(--color-indigo);
  box-shadow: var(--shadow-sm);
}

/* Timetable Period Item */
.period-card {
  display: flex;
  gap: 16px;
  align-items: center;
}
.time-col {
  width: 70px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-sub);
  text-align: right;
}
.subject-col {
  flex: 1;
  background: white;
  padding: 16px;
  border-radius: 20px;
  border-left: 5px solid var(--color-indigo);
  box-shadow: var(--shadow-sm);
}

/* 5. Assignments Screen */
.tabs-header {
  display: flex;
  background: #E2E8F0;
  padding: 4px;
  border-radius: 18px;
  margin-bottom: 18px;
}
.tab-btn {
  flex: 1;
  padding: 10px;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-sub);
  border-radius: 14px;
  cursor: pointer;
  border: none;
  background: transparent;
}
.tab-btn.active {
  background: white;
  color: var(--color-text-main);
  box-shadow: var(--shadow-sm);
}

/* Priority Badges */
.badge-urgent {
  background: #FEE2E2;
  color: #DC2626;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 700;
}
.badge-high {
  background: #FEF3C7;
  color: #D97706;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 700;
}
.badge-normal {
  background: #E0E7FF;
  color: #4338CA;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 700;
}

/* 6. Notes Screen */
.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: white;
  border: 1px solid var(--color-border);
  padding: 12px 18px;
  border-radius: 20px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
}
.search-input {
  border: none;
  outline: none;
  background: transparent;
  width: 100%;
  font-family: inherit;
  font-size: 14px;
}

/* Notes Folder Grid */
.folder-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}
.folder-card {
  background: white;
  padding: 18px;
  border-radius: 24px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: var(--transition-bounce);
}
.folder-card:active {
  transform: scale(0.95);
}

/* 8. Class Chat (Instagram Vibe) */
.chat-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.chat-bubble {
  max-width: 82%;
  padding: 14px 18px;
  border-radius: 22px;
  font-size: 14px;
  line-height: 1.45;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.chat-bubble.other {
  background: white;
  border-bottom-left-radius: 6px;
  align-self: flex-start;
  border: 1px solid var(--color-border);
}
.chat-bubble.me {
  background: linear-gradient(135deg, var(--color-indigo), var(--color-indigo-dark));
  color: white;
  border-bottom-right-radius: 6px;
  align-self: flex-end;
}
.chat-sender {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-indigo);
  margin-bottom: 4px;
}
.chat-bubble.me .chat-sender {
  color: #C7D2FE;
}

/* Instant Broadcast Alert Banner Pill inside Chat */
.broadcast-alert-card {
  background: linear-gradient(135deg, #FEF2F2, #FEE2E2);
  border: 2px solid #EF4444;
  border-radius: 22px;
  padding: 16px;
  text-align: center;
  box-shadow: var(--shadow-md);
  animation: pulseGlow 2s infinite;
}
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 10px rgba(239, 68, 68, 0.2); }
  50% { box-shadow: 0 0 20px rgba(239, 68, 68, 0.5); }
}

/* Poll Component */
.poll-card {
  background: white;
  border-radius: 22px;
  padding: 16px;
  border: 1px solid var(--color-border);
}
.poll-option {
  position: relative;
  background: #F1F5F9;
  border-radius: 14px;
  padding: 12px;
  margin-top: 8px;
  cursor: pointer;
  overflow: hidden;
  font-size: 13px;
  font-weight: 600;
}
.poll-progress {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  background: var(--color-lavender);
  opacity: 0.45;
  transition: width 0.5s ease;
}

/* Chat Input Bar */
.chat-input-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: white;
  padding: 10px 14px;
  border-radius: 28px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  margin-top: 12px;
}
.chat-input {
  flex: 1;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 14px;
}

/* 10. Class Directory Cards */
.directory-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.student-card {
  background: white;
  border-radius: 24px;
  padding: 16px;
  text-align: center;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.student-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  margin: 0 auto 10px auto;
  background-size: cover;
  background-position: center;
  border: 3px solid var(--color-indigo-light);
}

/* Modals & Bottom Drawers */
.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  justify-content: flex-end;
  flex-direction: column;
}
.modal-overlay.active {
  display: flex;
  animation: fadeIn 0.25s ease-out;
}
.modal-drawer {
  background: white;
  border-top-left-radius: 36px;
  border-top-right-radius: 36px;
  padding: 28px 24px 34px 24px;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

/* Toast Push Notification Banner - Optimized for Top Safe Area */
.push-banner {
  position: absolute;
  top: 52px;
  left: 14px;
  right: 14px;
  background: linear-gradient(135deg, #0F172A, #1E293B);
  color: white;
  padding: 12px 16px;
  border-radius: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
  z-index: 350;
  transform: translateY(-220px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.35s ease;
}
.push-banner.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.push-banner-text {
  font-size: 13px;
  font-weight: 700;
  color: white;
  line-height: 1.35;
  white-space: normal;
  word-break: break-word;
}
.admin-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: linear-gradient(135deg, #EF4444, #DC2626);
  color: white;
  padding: 3px 8px;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.5px;
}