/* ============================================================
   ASEITY MOD - SAAS DESIGN SYSTEM & STYLESHEET
   Linear / Notion / Stripe Aesthetic (Dark/Light Mode, Mobile-First)
   ============================================================ */

:root {
  /* Bảng màu chính (Light Mode) */
  --bg-body: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #FFFFFF;
  --bg-card-subtle: #F1F5F9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-card: rgba(255, 255, 255, 0.90);

  --border-subtle: #E2E8F0;
  --border-focus: #6366F1;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.08), 0 4px 8px -2px rgba(15, 23, 42, 0.03);
  --shadow-xl: 0 24px 48px -12px rgba(99, 102, 241, 0.12), 0 12px 24px -8px rgba(15, 23, 42, 0.06);

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #94A3B8;
  --text-inverse: #FFFFFF;

  --primary: #6366F1;
  --primary-hover: #4F46E5;
  --primary-subtle: #EEF2FF;
  --secondary: #8B5CF6;
  --gradient-brand: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
  --gradient-brand-subtle: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);

  --ticket-color: #F59E0B;
  --ticket-subtle: #FFFBEB;
  --success: #10B981;
  --success-subtle: #ECFDF5;
  --warning: #F59E0B;
  --warning-subtle: #FFFBEB;
  --danger: #EF4444;
  --danger-subtle: #FEF2F2;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  --orb-1: rgba(99, 102, 241, 0.12);
  --orb-2: rgba(139, 92, 246, 0.10);
  --orb-3: rgba(16, 185, 129, 0.08);

  --transition-fast: 150ms ease;
  --transition-normal: 250ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --bg-body: #090D16;
  --bg-surface: #111726;
  --bg-surface-elevated: #161F33;
  --bg-card-subtle: #182238;
  --bg-glass: rgba(17, 23, 38, 0.82);
  --bg-glass-card: rgba(22, 31, 51, 0.88);

  --border-subtle: #1E293B;
  --border-focus: #818CF8;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 24px 50px rgba(0, 0, 0, 0.6), 0 0 40px rgba(99, 102, 241, 0.15);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-tertiary: #64748B;
  --text-inverse: #090D16;

  --primary: #818CF8;
  --primary-hover: #6366F1;
  --primary-subtle: rgba(99, 102, 241, 0.18);
  --secondary: #A78BFA;

  --ticket-color: #FBBF24;
  --ticket-subtle: rgba(245, 158, 11, 0.15);
  --success: #34D399;
  --success-subtle: rgba(16, 185, 129, 0.15);
  --warning: #FBBF24;
  --warning-subtle: rgba(245, 158, 11, 0.15);
  --danger: #F87171;
  --danger-subtle: rgba(239, 68, 68, 0.15);

  --orb-1: rgba(99, 102, 241, 0.18);
  --orb-2: rgba(139, 92, 246, 0.15);
  --orb-3: rgba(16, 185, 129, 0.10);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  width: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

/* Touch manipulation & safe responsive interactions */
a, button, input, select, textarea, [role="button"],
.btn, .icon-btn, .nav-item, .bottom-nav-item, .task-card, .product-card, .streak-day-item {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* Ambient animated orbs */
.ambient-background {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.85;
  animation: floatOrb 22s ease-in-out infinite alternate;
}
.orb-1 { top: -10%; left: 15%; width: 480px; height: 480px; background: var(--orb-1); }
.orb-2 { top: 40%; right: 5%; width: 520px; height: 520px; background: var(--orb-2); animation-delay: -7s; }
.orb-3 { bottom: -15%; left: 30%; width: 460px; height: 460px; background: var(--orb-3); animation-delay: -14s; }

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 35px) scale(1.08); }
  100% { transform: translate(-30px, -25px) scale(0.95); }
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }

/* ============================================================
   TOP NAVBAR & MOBILE BOTTOM BAR
   ============================================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-subtle);
}
.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.15rem;
  cursor: pointer;
}
.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-brand);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}
.brand-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  cursor: pointer;
}
.nav-item:hover, .nav-item.active {
  color: var(--primary);
  background: var(--primary-subtle);
}

.ticket-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--ticket-subtle);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--ticket-color);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.ticket-badge.bounce {
  transform: scale(1.22);
}
.ticket-img-icon {
  height: 20px;
  width: auto;
  object-fit: contain;
  vertical-align: middle;
  filter: drop-shadow(0 2px 6px rgba(0, 150, 255, 0.45));
  transition: transform 0.2s ease;
  display: inline-block;
}
.ticket-badge:hover .ticket-img-icon {
  transform: scale(1.15);
}

.bottom-nav {
  display: none;
}

@media (max-width: 768px) {
  .nav-links { display: none !important; }
  
  /* Modern Floating Pill Bottom Navigation (Linear / Apple Wallet Feel) */
  .bottom-nav {
    display: block;
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: max(10px, env(safe-area-inset-bottom, 10px));
    background: var(--bg-glass-card);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-subtle);
    border-radius: 22px;
    box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.18), 0 0 0 1px rgba(255, 255, 255, 0.08) inset;
    z-index: 95;
    padding: 5px 6px;
    user-select: none;
  }
  .bottom-nav-inner {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 4px;
  }
  .bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 0.675rem;
    font-weight: 600;
    color: var(--text-tertiary);
    padding: 6px 3px;
    border-radius: 14px;
    cursor: pointer;
    min-height: 48px;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    touch-action: manipulation;
  }
  .bottom-nav-item svg {
    width: 20px;
    height: 20px;
    transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275), color 0.2s ease;
  }
  .bottom-nav-item:active {
    transform: scale(0.92);
  }
  .bottom-nav-item.active {
    color: var(--primary);
    background: var(--gradient-brand-subtle);
  }
  .bottom-nav-item.active svg {
    transform: scale(1.15) translateY(-1px);
    color: var(--primary);
  }
  
  body {
    padding-bottom: calc(85px + env(safe-area-inset-bottom, 12px)) !important;
  }
}

/* ============================================================
   BUTTONS & INPUT CONTROLS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.65rem 1.25rem;
  min-height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  user-select: none;
  white-space: nowrap;
}
.btn:active:not(:disabled) { transform: scale(0.98); }
.btn-primary {
  background: var(--gradient-brand);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover:not(:disabled) {
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
  transform: translateY(-1px);
}
.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-card-subtle);
  border-color: var(--border-focus);
}
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--bg-card-subtle); color: var(--text-primary); }
.btn-success { background: var(--success); color: #fff; box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3); }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger-subtle); color: var(--danger); border-color: rgba(239, 68, 68, 0.2); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none !important; transform: none !important; }
.btn-sm { padding: 0.35rem 0.8rem; min-height: 34px; font-size: 0.825rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 0.85rem 1.85rem; min-height: 52px; font-size: 1.05rem; border-radius: var(--radius-lg); }

.icon-btn {
  width: 40px;
  height: 40px;
  min-height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.icon-btn:hover { background: var(--bg-card-subtle); color: var(--text-primary); border-color: var(--border-focus); }

.input-field {
  width: 100%;
  min-height: 44px;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}
.input-field:focus { outline: none; border-color: var(--border-focus); box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: 0.725rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.badge-primary { background: var(--primary-subtle); color: var(--primary); }
.badge-ticket { background: var(--ticket-subtle); color: var(--ticket-color); }
.badge-success { background: var(--success-subtle); color: var(--success); }
.badge-warning { background: var(--warning-subtle); color: var(--warning); }
.badge-danger { background: var(--danger-subtle); color: var(--danger); }
.badge-neutral { background: var(--bg-card-subtle); color: var(--text-secondary); border: 1px solid var(--border-subtle); }

/* ============================================================
   MAIN CONTAINER & SPA ROUTING
   ============================================================ */
main.main-content {
  position: relative;
  z-index: 1;
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3.5rem;
}
.view-section {
  width: 100%;
  display: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}
.view-section.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
  animation: fadeInView 0.3s ease-out forwards;
}
@keyframes fadeInView {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.announcement-banner {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.announcement-banner .bell-icon { color: var(--primary); }

/* ============================================================
   HOME VIEW
   ============================================================ */
.hero-box {
  text-align: center;
  max-width: 760px;
  margin: 2rem auto 3rem;
}
.hero-title {
  font-size: clamp(2.1rem, 4.8vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 1rem;
}
.hero-title span {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* ============================================================
   TASKS VIEW & STREAK
   ============================================================ */
.tasks-page-wrapper {
  max-width: 1140px;
  margin: 0 auto;
  width: 100%;
}

.streak-container {
  background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.03) 50%, var(--bg-glass-card) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 1.75rem 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}
[data-theme="dark"] .streak-container {
  background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.12) 0%, rgba(139, 92, 246, 0.04) 50%, rgba(15, 23, 42, 0.8) 100%);
  border-color: rgba(255, 255, 255, 0.08);
}
.streak-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.btn-streak-checkin {
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(99, 102, 241, 0.35);
  transition: all var(--transition-fast);
}
.btn-streak-checkin:hover {
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.55);
  transform: translateY(-2px);
}

.streak-days-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.75rem;
  margin-top: 1.25rem;
}
.streak-day-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 0.95rem 0.4rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  position: relative;
  transition: all var(--transition-fast);
  min-height: 98px;
}
[data-theme="dark"] .streak-day-item {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.07);
}
.streak-day-item.completed {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.35);
  color: #10b981;
}
.streak-day-item.today {
  border: 2px solid #6366f1;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.35);
  background: rgba(99, 102, 241, 0.08);
  animation: pulseToday 2.5s infinite alternate ease-in-out;
}
@keyframes pulseToday {
  0% { box-shadow: 0 0 8px rgba(99, 102, 241, 0.25); }
  100% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.5); }
}
.streak-today-badge {
  position: absolute;
  top: -9px;
  background: #6366f1;
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  box-shadow: 0 2px 6px rgba(99, 102, 241, 0.4);
}
.streak-day-item.grand-prize {
  border: 1.5px solid #f59e0b;
  background: rgba(245, 158, 11, 0.08);
}
.streak-bonus-badge {
  position: absolute;
  top: -9px;
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #ffffff;
  font-size: 0.62rem;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  box-shadow: 0 2px 6px rgba(245, 158, 11, 0.4);
}
.streak-tag-status {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* Tasks Header with Progress & Reset Clock */
.tasks-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.tasks-status-box {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .tasks-status-box {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
}
.tasks-reset-clock {
  display: flex;
  flex-direction: column;
}
.clock-monospace {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.03em;
}
.tasks-progress-wrap {
  min-width: 140px;
}
.tasks-mini-progress-track {
  width: 100%;
  height: 6px;
  background: var(--bg-card-subtle);
  border-radius: 999px;
  overflow: hidden;
}
.tasks-mini-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #6366f1 0%, #10b981 100%);
  border-radius: 999px;
  transition: width 0.4s ease;
}

/* Tasks Grid 3 cols x 2 rows */
.tasks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
@media (max-width: 1024px) {
  .tasks-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .tasks-grid {
    grid-template-columns: 1fr;
  }
  .streak-days-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.task-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
}
.task-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
}
.task-card-top {
  display: flex;
  gap: 0.9rem;
  margin-bottom: 1rem;
}
.task-icon-box {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: var(--radius-md);
  background: var(--gradient-brand-subtle);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Task Tags & Categories */
.task-tag {
  font-size: 0.685rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.tag-amber { background: rgba(245, 158, 11, 0.12); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.25); }
.tag-cyan { background: rgba(6, 182, 212, 0.12); color: #06b6d4; border: 1px solid rgba(6, 182, 212, 0.25); }
.tag-indigo { background: rgba(139, 92, 246, 0.12); color: #8b5cf6; border: 1px solid rgba(139, 92, 246, 0.25); }
.tag-emerald { background: rgba(16, 185, 129, 0.12); color: #10b981; border: 1px solid rgba(16, 185, 129, 0.25); }
.tag-sky { background: rgba(56, 189, 248, 0.12); color: #38bdf8; border: 1px solid rgba(56, 189, 248, 0.25); }
.tag-gold { background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(217, 119, 6, 0.2) 100%); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.4); }

/* Card Footer Badge & Buttons */
.badge-ticket-gold {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: #f59e0b;
  font-weight: 700;
  font-size: 0.785rem;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.btn-task-start {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}
.btn-task-start .arrow-icon {
  transition: transform var(--transition-fast);
}
.btn-task-start:hover .arrow-icon {
  transform: translateX(4px);
}
.btn-task-completed {
  background: rgba(16, 185, 129, 0.12) !important;
  border: 1px solid rgba(16, 185, 129, 0.3) !important;
  color: #10b981 !important;
  cursor: default !important;
  opacity: 0.9 !important;
  padding: 0.4rem 0.75rem !important;
  font-size: 0.8rem !important;
  border-radius: var(--radius-md) !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 0.35rem !important;
  font-weight: 600 !important;
}

/* Task 6 Chest Card */
.task-card-chest {
  border: 1px solid rgba(245, 158, 11, 0.35);
  background: radial-gradient(circle at 95% 5%, rgba(245, 158, 11, 0.08) 0%, var(--bg-glass-card) 60%);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.08);
}
[data-theme="dark"] .task-card-chest {
  background: radial-gradient(circle at 95% 5%, rgba(245, 158, 11, 0.12) 0%, rgba(15, 23, 42, 0.75) 60%);
  border-color: rgba(245, 158, 11, 0.4);
}

/* ============================================================
   REDEEM VIEW & FILE DRAWER
   ============================================================ */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}
.filter-controls-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: nowrap;
}
.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 250px;
}
.search-input-wrapper .search-icon {
  position: absolute;
  left: 0.85rem;
  width: 16px;
  height: 16px;
  color: var(--text-tertiary);
  pointer-events: none;
}
.search-input-wrapper .search-input {
  padding-left: 2.35rem;
  width: 100%;
}
.category-select {
  width: auto;
  min-width: 165px;
  cursor: pointer;
}
@media (max-width: 768px) {
  .filter-controls-row {
    width: 100%;
    flex-wrap: wrap;
  }
  .search-input-wrapper {
    flex: 1;
    min-width: 180px;
    width: auto;
  }
  .category-select {
    flex: 1;
    min-width: 140px;
  }
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 1.5rem;
}
.product-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.3);
}
.product-cover {
  width: 100%;
  height: 175px;
  object-fit: cover;
  background: var(--bg-card-subtle);
  transition: filter var(--transition-normal), opacity var(--transition-normal);
}
.product-card.is-out-of-stock .product-cover {
  filter: grayscale(80%) opacity(0.5);
}
.product-body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.product-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
}
.product-specs-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.75rem;
  margin-bottom: 0.35rem;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  flex-wrap: wrap;
}
.product-spec-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  color: var(--text-secondary);
}
.product-spec-divider {
  color: var(--text-tertiary);
  opacity: 0.4;
  font-size: 0.7rem;
}
.product-price {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--ticket-color);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.product-card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
  margin-top: 1.15rem;
}
.btn-out-of-stock {
  background: rgba(255, 255, 255, 0.05) !important;
  color: #64748b !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  cursor: not-allowed !important;
  opacity: 1 !important;
  box-shadow: none !important;
  transform: none !important;
  font-weight: 600 !important;
}

/* File Drawer */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.drawer-overlay.open { display: flex; opacity: 1; }
.drawer-content {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 480px;
  background: var(--bg-surface-elevated);
  box-shadow: var(--shadow-xl);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}
.drawer-overlay.open .drawer-content { transform: translateX(0); }
.drawer-security-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #10b981;
  font-size: 0.725rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  margin-top: 0.4rem;
}
.drawer-warning-box {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.25);
  color: #fde68a;
  border-radius: var(--radius-md);
  padding: 0.75rem 0.9rem;
  font-size: 0.785rem;
  line-height: 1.45;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-top: 0.75rem;
}
.drawer-file-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 1.25rem 0;
}
.file-item-card {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-subtle);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: border-color var(--transition-fast);
}
.file-item-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
}
.file-icon-box {
  width: 38px;
  height: 38px;
  min-width: 38px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-drawer-download-all {
  width: 100%;
  justify-content: center;
  font-weight: 700;
  padding: 0.85rem 1.25rem;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35) !important;
}

/* Redeem Modal Summary Box */
.redeem-summary-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 0.95rem 1.15rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.875rem;
}
.redeem-summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.redeem-summary-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 0.2rem 0;
}

/* Success Modal Key Box & Link */
.success-key-box {
  background: var(--bg-card-subtle);
  border: 2px dashed var(--border-focus);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.success-key-box:hover {
  background: rgba(99, 102, 241, 0.08);
  border-color: var(--primary);
  transform: scale(1.01);
}
.btn-link-drawer {
  background: none;
  border: none;
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  margin: 0 auto;
}
.btn-link-drawer:hover {
  color: var(--primary-light);
  background: rgba(99, 102, 241, 0.08);
  transform: translateX(2px);
}

/* ============================================================
   MODALS
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 105;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.modal-overlay.open { display: flex; opacity: 1; }
.modal-dialog {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 100%;
  padding: 1.85rem;
  box-shadow: var(--shadow-xl);
  transform: scale(0.96);
  transition: transform var(--transition-normal);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-overlay.open .modal-dialog { transform: scale(1); }

.timer-ring-box {
  position: relative;
  width: 100px;
  height: 100px;
  margin: 1rem auto;
}
.timer-svg { transform: rotate(-90deg); width: 100%; height: 100%; }
.timer-circle-bg { fill: none; stroke: var(--border-subtle); stroke-width: 8; }
.timer-circle-progress {
  fill: none;
  stroke: var(--primary);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 283;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.8s linear;
}
.timer-number {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 800;
  font-family: 'JetBrains Mono', monospace;
}

/* ============================================================
   ADMIN DASHBOARD
   ============================================================ */
.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.admin-tab-nav {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 1.5rem;
  overflow-x: auto;
}
.admin-tab-btn {
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.admin-tab-btn.active {
  color: var(--primary);
  border-color: var(--primary);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}
.data-table th {
  background: var(--bg-card-subtle);
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
}
.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
}

/* Toast Container */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  animation: slideToast 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  max-width: 380px;
}
@keyframes slideToast {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ============================================================
   STATS & TRUST STRIP (DẢI THỐNG KÊ & ĐỘ TIN CẬY)
   ============================================================ */
.stats-trust-strip {
  margin-top: 2rem;
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 1.75rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}
.stat-trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}
.stat-trust-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -0.75rem;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--border-subtle);
}
.stat-trust-num {
  font-size: 1.85rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.35rem;
}
.stat-trust-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

@media (max-width: 768px) {
  .stats-trust-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem 1rem;
    padding: 1.5rem 1rem;
  }
  .stat-trust-item:nth-child(2)::after {
    display: none;
  }
}

/* ============================================================
   FOOTER CHUYÊN NGHIỆP (ASEITY MOD SAAS FOOTER)
   ============================================================ */
.site-footer {
  margin-top: 5rem;
  position: relative;
  z-index: 10;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
}
[data-theme="dark"] .site-footer {
  background: rgba(11, 13, 20, 0.75);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-glow-divider {
  height: 1px;
  width: 100%;
  background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.85) 0%, rgba(139, 92, 246, 0.4) 35%, transparent 70%);
  margin-bottom: -1px;
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1.35fr;
  gap: 3.5rem;
  margin-bottom: 3.5rem;
}
.footer-col {
  display: flex;
  flex-direction: column;
}
.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}
.footer-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  max-width: 340px;
}

/* Status Indicator Pulse */
.system-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #10b981;
  font-size: 0.785rem;
  font-weight: 600;
  width: fit-content;
}
.status-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseGreen 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
}
@keyframes pulseGreen {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Footer Quick Links */
.footer-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.footer-links-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}
.footer-links-list a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

/* Social & Support Cards Grid */
.social-cards-grid {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.social-link-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-subtle);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.social-icon-box {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}
.social-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
}
.social-subtitle {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* Hover Brand Glows */
.social-link-card.telegram-card:hover {
  border-color: #38bdf8;
  background: rgba(56, 189, 248, 0.08);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.2);
  transform: translateY(-2px);
}
.social-link-card.telegram-card .social-icon-box {
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
}

.social-link-card.discord-card:hover {
  border-color: #818cf8;
  background: rgba(129, 140, 248, 0.08);
  box-shadow: 0 4px 14px rgba(129, 140, 248, 0.2);
  transform: translateY(-2px);
}
.social-link-card.discord-card .social-icon-box {
  background: rgba(129, 140, 248, 0.15);
  color: #818cf8;
}

.social-link-card.zalo-card:hover {
  border-color: #2563eb;
  background: rgba(37, 99, 235, 0.08);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.2);
  transform: translateY(-2px);
}
.social-link-card.zalo-card .social-icon-box {
  background: rgba(37, 99, 235, 0.15);
  color: #2563eb;
}

/* Bottom Bar */
.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 1rem;
}
[data-theme="dark"] .footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-copyright {
  font-size: 0.825rem;
  color: var(--text-tertiary);
}
.dev-signature-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}
[data-theme="dark"] .dev-signature-pill {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
}
.dev-signature-pill:hover {
  border-color: #8b5cf6;
  box-shadow: 0 2px 12px rgba(139, 92, 246, 0.25);
}
.dev-author-gradient {
  background: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
  transition: filter var(--transition-fast);
}
.dev-signature-pill:hover .dev-author-gradient {
  filter: drop-shadow(0 0 6px rgba(236, 72, 153, 0.5));
}
.version-tag {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 0.725rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }
  .footer-desc {
    max-width: 100%;
  }
}

/* ============================================================
   NATIVE MOBILE EXPERIENCE SUITE (BƯỚC 2 -> BƯỚC 6)
   Linear / Notion / iOS Native Feel (<= 768px)
   ============================================================ */

/* 1. NỀN TẢNG MOBILE & AN TOÀN VIỀN MÀN HÌNH */
@media (max-width: 768px) {
  :root {
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
  }

  /* Ngăn chặn tuyệt đối cuộn ngang ngoài ý muốn */
  html, body {
    overflow-x: hidden !important;
    width: 100vw;
    max-width: 100vw;
    position: relative;
  }

  /* Chống iOS Safari tự động phóng to khi chạm vào ô nhập */
  input, select, textarea, .input-field, .category-select {
    font-size: 16px !important;
  }

  /* Mọi nút và icon bấm được đạt chuẩn ngón tay (tối thiểu 44px) */
  .btn, .icon-btn, .bottom-nav-item {
    min-height: 44px;
    touch-action: manipulation;
  }

  /* Hiệu ứng chạm nhạy micro-interaction (:active scale 0.97) */
  .btn:active:not(:disabled),
  .icon-btn:active:not(:disabled),
  .task-card:active,
  .product-card:active,
  .file-item-card:active {
    transform: scale(0.97) !important;
    transition: transform 0.12s ease-out !important;
  }

  /* Main container gọn gàng trên mobile */
  main.main-content {
    padding: 1rem 0.85rem 5rem !important;
  }

  /* Thanh trên (Navbar): Tinh giản, hỗ trợ tai thỏ iPhone */
  .navbar {
    padding-top: max(0.4rem, env(safe-area-inset-top, 0.4rem));
    padding-bottom: 0.45rem;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background var(--transition-normal);
  }
  .navbar.navbar--hidden {
    transform: translateY(-115%);
  }
  .navbar-inner {
    padding: 0 0.75rem;
  }
  .brand {
    font-size: 1rem;
    gap: 0.45rem;
  }
  .brand-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
  }
  .brand-icon svg {
    width: 18px !important;
    height: 18px !important;
  }
  .ticket-badge {
    padding: 0.25rem 0.65rem;
    font-size: 0.8rem;
    gap: 0.35rem;
  }
  .ticket-img-icon {
    height: 18px;
  }
  #authNavContainer .btn {
    padding: 0.35rem 0.7rem;
    font-size: 0.825rem;
    min-height: 38px;
  }
}

/* 2. TRANG CHỦ (VIEW 1 - HOME) TRÊN MOBILE */
@media (max-width: 768px) {
  .hero-box {
    margin: 1rem auto 2rem;
    padding: 0 0.25rem;
  }
  .hero-title {
    font-size: clamp(1.75rem, 7.5vw, 2.35rem) !important;
    line-height: 1.25 !important;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
  }
  .hero-subtitle {
    font-size: 0.925rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
  }
  .hero-box div[style*="display: flex"] {
    flex-direction: column !important;
    width: 100%;
    gap: 0.65rem !important;
  }
  .hero-box .btn {
    width: 100% !important;
    justify-content: center;
  }
  .stats-trust-strip {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1.25rem 0.75rem !important;
    padding: 1.25rem 0.85rem !important;
    margin-top: 1.5rem;
  }
  .stat-trust-num {
    font-size: 1.45rem !important;
  }
  .stat-trust-label {
    font-size: 0.785rem !important;
  }
}

/* 3. NHIỆM VỤ & CHUỖI STREAK (VIEW 2 - TASKS) TRÊN MOBILE */
@media (max-width: 768px) {
  .streak-container {
    padding: 1.15rem 0.85rem !important;
    border-radius: var(--radius-lg) !important;
    margin-bottom: 1.25rem;
  }
  .streak-header {
    flex-direction: column;
    align-items: stretch !important;
    gap: 0.85rem;
  }
  .btn-streak-checkin {
    width: 100% !important;
    justify-content: center;
    font-size: 0.9rem !important;
    padding: 0.75rem 1rem !important;
  }

  /* Chuỗi 7 ngày điểm danh cuộn ngang mượt kiểu mobile app (Scroll-snap) */
  .streak-days-grid {
    display: flex !important;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 0.5rem !important;
    padding: 0.5rem 0.2rem 0.75rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .streak-days-grid::-webkit-scrollbar {
    display: none;
  }
  .streak-day-item {
    flex: 0 0 calc(28% - 0.5rem) !important;
    min-width: 76px;
    scroll-snap-align: start;
    min-height: 86px !important;
    padding: 0.75rem 0.3rem !important;
    border-radius: var(--radius-md) !important;
  }

  .tasks-section-header {
    flex-direction: column;
    align-items: stretch !important;
    gap: 0.85rem;
    margin-bottom: 1.15rem;
  }
  .tasks-status-box {
    width: 100%;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.65rem 0.95rem;
  }

  /* Thẻ nhiệm vụ 1 cột chuẩn ngón cái */
  .tasks-grid {
    grid-template-columns: 1fr !important;
    gap: 0.85rem !important;
  }
  .task-card {
    padding: 1.15rem !important;
    border-radius: var(--radius-md) !important;
  }
  .task-card .btn {
    width: 100%;
    justify-content: center;
    margin-top: 0.75rem;
  }
}

/* 4. KHO QUY ĐỔI KEY (VIEW 3 - REDEEM) TRÊN MOBILE */
@media (max-width: 768px) {
  .filter-bar {
    position: sticky;
    top: calc(52px + env(safe-area-inset-top, 0px));
    z-index: 40;
    background: var(--bg-body);
    padding: 0.75rem 0;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-subtle);
  }
  .filter-bar h2 {
    font-size: 1.25rem !important;
  }
  .filter-bar p {
    font-size: 0.8rem !important;
    margin-bottom: 0.5rem;
  }
  .filter-controls-row {
    flex-direction: row;
    gap: 0.5rem;
    width: 100%;
  }
  .search-input-wrapper {
    flex: 2;
    min-width: 0;
  }
  .category-select {
    flex: 1.3;
    min-width: 0;
  }

  /* Lưới sản phẩm: 1 cột cho <= 420px, 2 cột khi rộng hơn */
  .products-grid {
    grid-template-columns: 1fr !important;
    gap: 1.15rem !important;
  }
  .product-cover {
    height: 160px !important;
    aspect-ratio: 16 / 9;
  }
  .product-body {
    padding: 1rem !important;
  }
  .product-card-actions {
    grid-template-columns: 1fr 1fr !important;
    gap: 0.5rem !important;
  }
  .product-card-actions .btn {
    padding: 0.65rem 0.5rem !important;
    font-size: 0.825rem !important;
    min-height: 44px;
    justify-content: center;
  }
}

@media (min-width: 421px) and (max-width: 768px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.85rem !important;
  }
  .product-card-actions {
    grid-template-columns: 1fr !important;
  }
}

/* 5. KHO KEY CỦA TÔI & LỊCH SỬ VÉ (VIEW 4) TRÊN MOBILE */
@media (max-width: 768px) {
  .key-value-box, .success-key-box {
    word-break: break-all !important;
    font-size: 1rem !important;
    padding: 0.85rem !important;
  }
  #myKeysContainer .task-card {
    padding: 1rem !important;
  }
  #myKeysContainer .btn {
    width: 100%;
    margin-top: 0.5rem;
    min-height: 44px;
  }

  /* Bảng lịch sử vé (Ledger) chuyển sang dạng thẻ cuộn mượt */
  .data-table th, .data-table td {
    padding: 0.65rem 0.75rem !important;
    font-size: 0.8rem !important;
  }
}

/* 6. TÀI KHOẢN (VIEW 5 - ACCOUNT) KIỂU CÀI ĐẶT NATIVE IOS */
@media (max-width: 768px) {
  #view-account .btn {
    min-height: 48px;
    font-size: 0.95rem;
    font-weight: 700;
  }
  #view-account div[style*="max-width: 640px"] {
    gap: 1rem !important;
  }
}

/* 7. ADMIN DASHBOARD TRÊN MOBILE */
@media (max-width: 768px) {
  .admin-stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.75rem !important;
  }
  .admin-tab-nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 0.35rem;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 2px;
  }
  .admin-tab-nav::-webkit-scrollbar {
    display: none;
  }
  .admin-tab-btn {
    padding: 0.55rem 0.85rem !important;
    font-size: 0.825rem !important;
  }
  #adminTab-keys div[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    gap: 0.65rem !important;
  }
}

/* ============================================================
   BƯỚC 5: MODAL & DRAWER DẠNG BOTTOM SHEET CHO MOBILE
   ============================================================ */
@media (max-width: 768px) {
  /* Overlay đẩy modal xuống đáy màn hình */
  .modal-overlay {
    align-items: flex-end !important;
    padding: 0 !important;
    background: rgba(9, 13, 22, 0.75) !important;
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
  }

  /* Hộp thoại trượt từ dưới lên (Bottom Sheet) */
  .modal-dialog {
    width: 100% !important;
    max-width: 100% !important;
    border-radius: 24px 24px 0 0 !important;
    border-bottom: none !important;
    padding: 1.5rem 1.25rem calc(1.5rem + env(safe-area-inset-bottom, 0px)) !important;
    max-height: 88dvh !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    transform: translateY(100%) !important;
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }

  /* Thanh gạt nhỏ ở đầu sheet (Native iOS / Android Pull Handle) */
  .modal-dialog::before {
    content: '';
    display: block;
    width: 42px;
    height: 4.5px;
    border-radius: 999px;
    background: var(--border-subtle);
    margin: -0.65rem auto 1.15rem;
    opacity: 0.8;
  }

  .modal-overlay.open .modal-dialog {
    transform: translateY(0) !important;
  }

  /* Drawer Thư Mục File cũng chuyển thành Bottom Sheet */
  .drawer-overlay {
    align-items: flex-end;
  }
  .drawer-content {
    top: auto !important;
    bottom: 0 !important;
    right: 0 !important;
    left: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    max-height: 88dvh !important;
    border-radius: 24px 24px 0 0 !important;
    transform: translateY(100%) !important;
    padding: 1.5rem 1.25rem calc(1.5rem + env(safe-area-inset-bottom, 0px)) !important;
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }
  .drawer-content::before {
    content: '';
    display: block;
    width: 42px;
    height: 4.5px;
    border-radius: 999px;
    background: var(--border-subtle);
    margin: -0.65rem auto 1.15rem;
    opacity: 0.8;
  }
  .drawer-overlay.open .drawer-content {
    transform: translateY(0) !important;
  }
  .btn-drawer-download-all {
    position: sticky;
    bottom: 0;
    margin-top: 0.75rem;
  }

  /* Toast Notification: Nổi lên phía trên thanh Menu dưới */
  .toast-container {
    bottom: calc(75px + env(safe-area-inset-bottom, 10px)) !important;
    right: 12px !important;
    left: 12px !important;
    max-width: none !important;
  }
  .toast {
    max-width: 100% !important;
    width: 100% !important;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25) !important;
  }
}

/* ============================================================
   BƯỚC 6: TỐI ƯU HIỆU NĂNG & HIỆU ỨNG (PERFORMANCE)
   ============================================================ */
@media (max-width: 768px) {
  /* Giảm blur đốm sáng gradient động để máy yếu không giật lag */
  .orb {
    filter: blur(35px) !important;
    animation: none !important;
    opacity: 0.4 !important;
  }
  .site-footer {
    margin-top: 3rem !important;
  }
}

/* Tôn trọng người dùng bật Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Skeleton Placeholder Loading Animation */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card-subtle) 25%, var(--bg-surface) 50%, var(--bg-card-subtle) 75%);
  background-size: 200% 100%;
  animation: skeletonPulse 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes skeletonPulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================================
   LINK4M MODAL & IP QUOTA BADGE STYLES
   ============================================================ */
.link4m-dialog {
  max-width: 480px;
  background: var(--bg-surface, #111827);
  border: 1px solid rgba(6, 182, 212, 0.25);
  box-shadow: 0 25px 60px -15px rgba(6, 182, 212, 0.2);
}

.link4m-steps-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-lg, 16px);
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.link4m-step-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--text-secondary, #94a3b8);
}

.link4m-step-item strong {
  color: #f1f5f9;
}

.link4m-step-item .step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(6, 182, 212, 0.2);
  color: #06b6d4;
  font-weight: 700;
  font-size: 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.link4m-policy-note {
  background: rgba(245, 158, 11, 0.08);
  border: 1px dashed rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md, 12px);
  padding: 0.75rem 0.85rem;
  font-size: 0.775rem;
  color: #fcd34d;
  line-height: 1.45;
  text-align: left;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}

.link4m-btn-glow {
  background: linear-gradient(135deg, #06b6d4, #0284c7) !important;
  color: #ffffff !important;
  border: none !important;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.4);
  transition: all 0.25s ease;
}

.link4m-btn-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(6, 182, 212, 0.6);
}

.link4m-status-card {
  background: rgba(6, 182, 212, 0.05);
  border: 1px solid rgba(6, 182, 212, 0.15);
  border-radius: var(--radius-md, 12px);
  padding: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.link4m-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(6, 182, 212, 0.3);
  border-top-color: #06b6d4;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.task-ip-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.725rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.task-ip-badge-active {
  background: rgba(6, 182, 212, 0.12);
  color: #22d3ee;
  border: 1px solid rgba(6, 182, 212, 0.25);
}

.task-ip-badge-exhausted {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.25);
}