/* ============================================================
   LAUGHTALE SMP — MODERN DESIGN TOKENS & MOBILE PRIMITIVES
   PhD-Level UI/UX Architecture · Mobile-First Responsive System
   ============================================================ */

:root {
  /* ── 1. Color Palette (Semantic Tokens) ── */
  --bg-deep: #070a0f;
  --bg-surface: rgba(15, 23, 42, 0.75);
  --bg-surface-hover: rgba(30, 41, 59, 0.85);
  --bg-surface-active: rgba(51, 65, 85, 0.9);
  --bg-glass: rgba(15, 23, 42, 0.65);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(168, 85, 247, 0.4);
  --border-glow: rgba(168, 85, 247, 0.6);

  /* Primary Brand (Laughtale Purple / Accent) */
  --color-primary: #a855f7;
  --color-primary-light: #c084fc;
  --color-primary-dark: #7c3aed;
  --color-primary-glow: rgba(168, 85, 247, 0.25);

  /* Functional Status Colors */
  --color-online: #10b981;
  --color-online-glow: rgba(16, 185, 129, 0.3);
  --color-gold: #f59e0b;
  --color-gold-glow: rgba(245, 158, 11, 0.25);
  --color-cyan: #06b6d4;
  --color-cyan-glow: rgba(6, 182, 212, 0.25);
  --color-rose: #f43f5e;
  --color-rose-glow: rgba(244, 63, 94, 0.25);

  /* Typography Colors */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --text-inverse: #0f172a;

  /* ── 2. Fluid Typography Scale ── */
  --font-sans: "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-pixel: "Press Start 2P", monospace;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --text-2xs: clamp(0.6rem, 0.55rem + 0.25vw, 0.7rem);
  --text-xs: clamp(0.7rem, 0.65rem + 0.3vw, 0.8rem);
  --text-sm: clamp(0.8rem, 0.75rem + 0.3vw, 0.9rem);
  --text-base: clamp(0.9rem, 0.85rem + 0.3vw, 1rem);
  --text-lg: clamp(1.05rem, 0.95rem + 0.5vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.55rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-3xl: clamp(1.85rem, 1.5rem + 1.5vw, 2.75rem);

  /* ── 3. Spacing & Dimensions ── */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  --shadow-glow-purple: 0 0 24px rgba(168, 85, 247, 0.35);
  --shadow-glow-emerald: 0 0 20px rgba(16, 185, 129, 0.35);

  --nav-bottom-height: 64px;
}

/* Tabular figures for dynamic realtime numbers */
.tabular-nums, .stat-val, .kpi-num, .price-tag, .count-num {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

/* ============================================================
   MOBILE BOTTOM NAVIGATION BAR (Floating Thumb-Zone Hub)
   ============================================================ */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: clamp(10px, 2.5vw, 18px);
  left: 50%;
  transform: translateX(-50%);
  width: min(calc(100% - 24px), 440px);
  height: var(--nav-bottom-height);
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
  z-index: 999;
  padding: 6px 8px;
  align-items: center;
  justify-content: space-around;
  user-select: none;
  touch-action: manipulation;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s;
}

.mobile-nav-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  height: 100%;
  min-height: 48px; /* Touch target minimum */
  border-radius: var(--radius-full);
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: var(--text-2xs);
  font-weight: 700;
  gap: 3px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav-item svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), stroke 0.25s;
}

.mobile-nav-item:active {
  transform: scale(0.92);
}

.mobile-nav-item.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.25) 0%, rgba(124, 58, 237, 0.15) 100%);
  border: 1px solid rgba(168, 85, 247, 0.4);
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.3);
}

.mobile-nav-item.active svg {
  stroke: var(--color-primary-light);
  transform: translateY(-1px) scale(1.1);
}

/* Badge for notifications on bottom nav item */
.mobile-nav-badge {
  position: absolute;
  top: 4px;
  right: calc(50% - 18px);
  width: 7px;
  height: 7px;
  background: var(--color-rose);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-rose);
  animation: pulseBadge 2s infinite;
}

@keyframes pulseBadge {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

@media (max-width: 900px) {
  .mobile-bottom-nav {
    display: flex;
  }
  
  /* Give enough breathing room for body content above floating bottom bar */
  body {
    padding-bottom: calc(var(--nav-bottom-height) + 32px) !important;
  }
}

/* ============================================================
   MODERN GLASS CARD (Clean, Premium, Dark)
   ============================================================ */
.premium-card {
  position: relative;
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1rem, 3vw, 1.5rem);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s, box-shadow 0.3s;
  overflow: hidden;
}

.premium-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-card), 0 0 20px var(--color-primary-glow);
  transform: translateY(-2px);
}

/* ============================================================
   BOTTOM SHEET MODAL (Mobile-Native Drawer)
   ============================================================ */
.bottom-sheet-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.bottom-sheet-overlay.open {
  opacity: 1;
  visibility: visible;
}

.bottom-sheet {
  width: 100%;
  max-width: 540px;
  max-height: 88vh;
  background: #0f172a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  box-shadow: 0 -8px 40px rgba(0, 0, 0, 0.75);
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.bottom-sheet-overlay.open .bottom-sheet {
  transform: translateY(0);
}

.bottom-sheet-handle {
  width: 44px;
  height: 5px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  margin: 12px auto 6px;
  cursor: grab;
}

.bottom-sheet-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bottom-sheet-body {
  padding: 1.25rem;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.bottom-sheet-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
  background: rgba(15, 23, 42, 0.95);
}

/* ============================================================
   PILL BUTTONS & FILTERS (Horizontal Scrollable on Mobile)
   ============================================================ */
.pill-group {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.pill-group::-webkit-scrollbar { display: none; }

.pill-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: var(--text-xs);
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}

.pill-item:hover, .pill-item.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 16px var(--color-primary-glow);
}

/* ============================================================
   ACCESSIBILITY & REDUCED MOTION SAFETY
   ============================================================ */
@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;
  }
}