:root {
  --font-fa: 'Vazirmatn', 'Dana', 'Sahel', 'IRANSans', system-ui, -apple-system, BlinkMacSystemFont, Tahoma, sans-serif;
  --font-en: 'Outfit', -apple-system, sans-serif;

  /* Color Palette - Default Theme */
  --bg-gradient-1: #0f172a;
  --bg-gradient-2: #1e1b4b;
  --bg-gradient-3: #31103f;
  
  --primary-accent: #6366f1;
  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --secondary-accent: #ec4899;
  --tertiary-accent: #14b8a6;
  
  --glass-bg: rgba(15, 23, 42, 0.75);
  --glass-card: rgba(30, 41, 59, 0.7);
  --glass-card-hover: rgba(51, 65, 85, 0.85);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-glow: rgba(99, 102, 241, 0.4);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  --border-radius-xl: 28px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Theme variations (15 Android Themes) */
body.theme-aurora {
  --bg-gradient-1: #042f2e;
  --bg-gradient-2: #064e3b;
  --bg-gradient-3: #022c22;
  --primary-accent: #059669;
  --primary-gradient: linear-gradient(135deg, #059669 0%, #0d9488 100%);
  --secondary-accent: #0d9488;
  --tertiary-accent: #2563eb;
  --glass-border-glow: rgba(5, 150, 105, 0.4);
}

body.theme-sunrise {
  --bg-gradient-1: #451a03;
  --bg-gradient-2: #78350f;
  --bg-gradient-3: #4c0519;
  --primary-accent: #ea580c;
  --primary-gradient: linear-gradient(135deg, #ea580c 0%, #f43f5e 100%);
  --secondary-accent: #f43f5e;
  --tertiary-accent: #eab308;
  --glass-border-glow: rgba(234, 88, 12, 0.4);
}

body.theme-cyber {
  --bg-gradient-1: #2e1065;
  --bg-gradient-2: #3b0764;
  --bg-gradient-3: #0f172a;
  --primary-accent: #d946ef;
  --primary-gradient: linear-gradient(135deg, #d946ef 0%, #8b5cf6 100%);
  --secondary-accent: #06b6d4;
  --tertiary-accent: #8b5cf6;
  --glass-border-glow: rgba(217, 70, 239, 0.4);
}

body.theme-pearl {
  --bg-gradient-1: #1e1b4b;
  --bg-gradient-2: #31103f;
  --bg-gradient-3: #0f172a;
  --primary-accent: #8b5cf6;
  --primary-gradient: linear-gradient(135deg, #8b5cf6 0%, #38bdf8 100%);
  --secondary-accent: #38bdf8;
  --tertiary-accent: #f472b6;
  --glass-border-glow: rgba(139, 92, 246, 0.4);
}

body.theme-deep-focus {
  --bg-gradient-1: #0f172a;
  --bg-gradient-2: #1e1b4b;
  --bg-gradient-3: #070a13;
  --primary-accent: #4338ca;
  --primary-gradient: linear-gradient(135deg, #4338ca 0%, #1e40af 100%);
  --secondary-accent: #1e40af;
  --tertiary-accent: #06b6d4;
  --glass-border-glow: rgba(67, 56, 202, 0.4);
}

body.theme-pomodoro {
  --bg-gradient-1: #450a0a;
  --bg-gradient-2: #3f0707;
  --bg-gradient-3: #1c0303;
  --primary-accent: #ef4444;
  --primary-gradient: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
  --secondary-accent: #f97316;
  --tertiary-accent: #ec4899;
  --glass-border-glow: rgba(239, 68, 68, 0.4);
}

body.theme-zen {
  --bg-gradient-1: #064e3b;
  --bg-gradient-2: #14532d;
  --bg-gradient-3: #022c22;
  --primary-accent: #10b981;
  --primary-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --secondary-accent: #d97706;
  --tertiary-accent: #059669;
  --glass-border-glow: rgba(16, 185, 129, 0.4);
}

body.theme-cosmic {
  --bg-gradient-1: #2e1065;
  --bg-gradient-2: #1e1b4b;
  --bg-gradient-3: #0b0914;
  --primary-accent: #7c3aed;
  --primary-gradient: linear-gradient(135deg, #7c3aed 0%, #0284c7 100%);
  --secondary-accent: #0284c7;
  --tertiary-accent: #4338ca;
  --glass-border-glow: rgba(124, 58, 237, 0.4);
}

body.theme-pacific {
  --bg-gradient-1: #0c4a6e;
  --bg-gradient-2: #032b41;
  --bg-gradient-3: #0f172a;
  --primary-accent: #0284c7;
  --primary-gradient: linear-gradient(135deg, #0284c7 0%, #14b8a6 100%);
  --secondary-accent: #14b8a6;
  --tertiary-accent: #1e40af;
  --glass-border-glow: rgba(2, 132, 199, 0.4);
}

body.theme-golden {
  --bg-gradient-1: #451a03;
  --bg-gradient-2: #3f1502;
  --bg-gradient-3: #2e1003;
  --primary-accent: #d97706;
  --primary-gradient: linear-gradient(135deg, #d97706 0%, #c2410c 100%);
  --secondary-accent: #c2410c;
  --tertiary-accent: #be123c;
  --glass-border-glow: rgba(217, 119, 6, 0.4);
}

body.theme-autumn {
  --bg-gradient-1: #4c0519;
  --bg-gradient-2: #370311;
  --bg-gradient-3: #1c0208;
  --primary-accent: #831843;
  --primary-gradient: linear-gradient(135deg, #831843 0%, #9f1239 100%);
  --secondary-accent: #9f1239;
  --tertiary-accent: #b45309;
  --glass-border-glow: rgba(131, 24, 67, 0.4);
}

body.theme-emerald {
  --bg-gradient-1: #064e3b;
  --bg-gradient-2: #022c22;
  --bg-gradient-3: #14382c;
  --primary-accent: #047857;
  --primary-gradient: linear-gradient(135deg, #047857 0%, #65a30d 100%);
  --secondary-accent: #65a30d;
  --tertiary-accent: #10b981;
  --glass-border-glow: rgba(4, 120, 87, 0.4);
}

body.theme-indigo {
  --bg-gradient-1: #1e1b4b;
  --bg-gradient-2: #2e1065;
  --bg-gradient-3: #0f172a;
  --primary-accent: #3730a3;
  --primary-gradient: linear-gradient(135deg, #3730a3 0%, #9333ea 100%);
  --secondary-accent: #9333ea;
  --tertiary-accent: #2563eb;
  --glass-border-glow: rgba(55, 48, 163, 0.4);
}

body.theme-pastel {
  --bg-gradient-1: #2b1040;
  --bg-gradient-2: #1e1b4b;
  --bg-gradient-3: #0f172a;
  --primary-accent: #c084fc;
  --primary-gradient: linear-gradient(135deg, #c084fc 0%, #fb7185 100%);
  --secondary-accent: #fb7185;
  --tertiary-accent: #2dd4bf;
  --glass-border-glow: rgba(192, 132, 252, 0.4);
}

body.theme-solar {
  --bg-gradient-1: #450a0a;
  --bg-gradient-2: #451a03;
  --bg-gradient-3: #270404;
  --primary-accent: #dc2626;
  --primary-gradient: linear-gradient(135deg, #dc2626 0%, #f59e0b 100%);
  --secondary-accent: #f59e0b;
  --tertiary-accent: #f97316;
  --glass-border-glow: rgba(220, 38, 38, 0.4);
}

/* Font Family Classes */
body.font-vazir {
  --font-fa: 'Vazirmatn', 'Dana', system-ui, sans-serif;
}
body.font-shabnam {
  --font-fa: 'Shabnam', 'Vazirmatn', sans-serif;
}
body.font-sahel {
  --font-fa: 'Sahel', 'Vazirmatn', sans-serif;
}
body.font-samim {
  --font-fa: 'Samim', 'Vazirmatn', sans-serif;
}
body.font-aref {
  --font-fa: 'Aref Ruqaa', 'Amiri', 'Vazirmatn', serif;
}
body.font-nastaliq,
body.font-irannastaliq {
  --font-fa: 'IranNastaliq', 'Noto Nastaliq Urdu', 'Pak Nastaleeq', 'Vazirmatn', serif;
  line-height: 1.9;
}
body.font-lalezar {
  --font-fa: 'Lalezar', 'Vazirmatn', sans-serif;
}
body.font-monospace {
  --font-fa: 'Samim', monospace, 'Courier New', sans-serif;
}

/* Font Scale Classes */
html.scale-small { font-size: 85%; }
html.scale-medium { font-size: 100%; }
html.scale-large { font-size: 115%; }
html.scale-xlarge { font-size: 130%; }

/* Theme Mode (Light Mode Overrides) */
body.mode-light {
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-card: rgba(255, 255, 255, 0.75);
  --glass-card-hover: rgba(255, 255, 255, 0.95);
  --glass-border: rgba(0, 0, 0, 0.12);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --bg-gradient-1: #f8fafc;
  --bg-gradient-2: #e2e8f0;
  --bg-gradient-3: #cbd5e1;
}

body.mode-light .app-header {
  background: rgba(255, 255, 255, 0.85);
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

body.mode-light .bottom-nav {
  background: rgba(255, 255, 255, 0.85);
  border-top-color: rgba(0, 0, 0, 0.1);
}

body.mode-light .form-input,
body.mode-light select.glass-panel {
  background: rgba(241, 245, 249, 0.9) !important;
  color: #0f172a !important;
  border-color: rgba(0, 0, 0, 0.15) !important;
}

body.mode-light select option {
  background: #ffffff !important;
  color: #0f172a !important;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
}

body {
  font-family: var(--font-fa);
  background: radial-gradient(circle at 20% 20%, var(--bg-gradient-2) 0%, var(--bg-gradient-1) 50%, var(--bg-gradient-3) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  direction: rtl;
  overflow-x: hidden;
  line-height: 1.5;
}

/* Glassmorphism utility */
.glass-panel {
  background: var(--glass-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--border-radius-lg);
}

.glass-panel-interactive {
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.glass-panel-interactive:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.45);
  border-color: var(--glass-border-glow);
}

/* App Shell */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-bottom: 90px; /* Space for bottom nav */
}

/* Top Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 12px 20px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.header-logo {
  width: 36px;
  height: 36px;
  background: var(--primary-gradient);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.header-title {
  font-size: 1.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

/* Header Buttons */
.btn-icon-pulse {
  position: relative;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-icon-pulse:hover {
  background: rgba(239, 68, 68, 0.3);
  transform: scale(1.05);
}

.btn-telegram {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #229ed9;
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(34, 158, 217, 0.35);
  transition: var(--transition-fast);
}

.btn-telegram:hover {
  background: #1d8bc0;
  transform: translateY(-1px);
}

.btn-header-action {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--border-radius-md);
  font-family: var(--font-fa);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-header-action:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--primary-accent);
}

/* Bottom Navigation Bar */
.bottom-nav {
  position: fixed;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 24px);
  max-width: 720px;
  z-index: 100;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--border-radius-xl);
  padding: 6px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: space-around;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 8px 10px;
  border-radius: 18px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  flex: 1;
}

.nav-item svg {
  width: 20px;
  height: 20px;
  stroke-width: 2.2;
}

.nav-item:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-item.active {
  color: #fff;
  background: var(--primary-gradient);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

/* Content Container */
.main-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Day Selector Pills */
.day-selector {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 2px 10px 2px;
  scrollbar-width: none;
}

.day-selector::-webkit-scrollbar {
  display: none;
}

.day-pill {
  padding: 8px 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-fast);
}

.day-pill:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

.day-pill.active {
  background: var(--primary-gradient);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

/* 48 Slots Grid */
.slots-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.slot-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--border-radius-md);
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.06);
  cursor: pointer;
  transition: var(--transition-fast);
}

.slot-row:hover {
  background: rgba(51, 65, 85, 0.7);
  border-color: var(--glass-border-glow);
  transform: translateX(-3px);
}

.slot-time {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  min-width: 95px;
  direction: ltr;
  text-align: right;
}

.slot-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.slot-note {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-right: auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Cards & Widgets */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1f));
  gap: 18px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: fadeIn 0.2s ease;
}

.modal-card {
  width: 100%;
  max-width: 520px;
  background: #1e293b;
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-xl);
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 800;
}

.btn-close {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-close:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

/* Category Grid in Picker */
.category-picker-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.cat-pick-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: var(--border-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: white;
  font-family: var(--font-fa);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.cat-pick-btn:hover {
  transform: translateY(-2px);
  border-color: var(--primary-accent);
}

/* Inputs & Form Elements */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.input-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius-md);
  color: var(--text-primary);
  font-family: var(--font-fa);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.btn-primary {
  width: 100%;
  padding: 12px;
  background: var(--primary-gradient);
  border: none;
  border-radius: var(--border-radius-md);
  color: white;
  font-family: var(--font-fa);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
  transition: var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

/* Donut & Progress Rings */
.progress-ring-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.progress-text {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

/* Responsive adjustments for Mobile, Tablet, Laptop, Portrait & Landscape */
@media (max-width: 768px) {
  .main-container {
    padding: 10px;
  }
  .dashboard-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .category-picker-grid {
    grid-template-columns: 1fr !important;
  }
  .header-title {
    font-size: 1rem;
  }
  .slot-row {
    flex-wrap: wrap;
    gap: 6px !important;
    padding: 10px !important;
  }
  .slot-time {
    width: 100% !important;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    padding-bottom: 4px;
  }
  .modal-card {
    padding: 16px !important;
    border-radius: 18px !important;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (min-width: 1025px) {
  .main-container {
    max-width: 1200px;
    margin: 0 auto;
  }
}

@media (orientation: landscape) and (max-height: 500px) {
  .bottom-nav {
    padding: 4px 10px;
  }
  .modal-card {
    max-height: 96vh !important;
  }
}