/* ═══════════════════════════════════════════════════════════════════
   Wynbook Component Layer — components.css
   Loaded on every page. Provides Modal, Sheet, Toast, StepFlow.
   iOS modal contract baked in: dvh, safe-area, 16px inputs.
   ═══════════════════════════════════════════════════════════════════ */

:root {
  /* Surfaces (additive — existing --bg-* still work) */
  --surface-0: #0a0a0c;
  --surface-1: #111114;
  --surface-2: #18181d;
  --surface-3: #1f1f26;
  --surface-glass: rgba(24, 24, 29, 0.78);

  /* Elevation (3 tiers, gold-tinted) */
  --elevation-1: 0 1px 2px rgba(0,0,0,0.5), 0 0 0 1px rgba(212,168,67,0.04);
  --elevation-2: 0 4px 12px rgba(0,0,0,0.55), 0 0 0 1px rgba(212,168,67,0.06);
  --elevation-3: 0 16px 48px rgba(0,0,0,0.6), 0 0 0 1px rgba(212,168,67,0.08);

  /* Motion */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out-quad: cubic-bezier(0.45, 0, 0.55, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 150ms;
  --dur-base: 250ms;
  --dur-slow: 400ms;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;

  /* Radii */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* Z-index scale */
  --z-header: 100;
  --z-bottomnav: 150;
  --z-betslip: 200;
  --z-sheet: 9998;
  --z-modal: 9999;
  --z-toast: 10000;
}

/* ─── Modal / Sheet ────────────────────────────────────────────── */

.wb-modal-backdrop {
  position: fixed; inset: 0;
  height: 100dvh;
  padding:
    env(safe-area-inset-top, 0px)
    env(safe-area-inset-right, 0px)
    env(safe-area-inset-bottom, 0px)
    env(safe-area-inset-left, 0px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.62);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out-expo);
  z-index: var(--z-modal);
}
.wb-modal-backdrop.wb-open { opacity: 1; }

.wb-modal-card {
  position: relative;
  background: var(--surface-2);
  border: 1px solid rgba(212, 168, 67, 0.18);
  border-radius: var(--radius-lg);
  width: min(92vw, var(--wb-modal-max, 480px));
  max-height: calc(
    100dvh
    - var(--space-6)
    - env(safe-area-inset-top, 0px)
    - env(safe-area-inset-bottom, 0px)
  );
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--elevation-3);
  transform: translateY(8px) scale(0.98);
  transition: transform var(--dur-base) var(--ease-out-expo);
}
.wb-modal-backdrop.wb-open .wb-modal-card {
  transform: translateY(0) scale(1);
}
.wb-modal-backdrop[data-size="sm"] .wb-modal-card { --wb-modal-max: 380px; }
.wb-modal-backdrop[data-size="md"] .wb-modal-card { --wb-modal-max: 480px; }
.wb-modal-backdrop[data-size="lg"] .wb-modal-card { --wb-modal-max: 640px; }

/* Sheet variant — bottom-anchored on mobile */
@media (max-width: 768px) {
  .wb-modal-backdrop[data-variant="sheet"] {
    align-items: flex-end;
  }
  .wb-modal-backdrop[data-variant="sheet"] .wb-modal-card {
    width: 100%;
    max-width: none;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    border-bottom: none;
    transform: translateY(100%);
  }
  .wb-modal-backdrop[data-variant="sheet"].wb-open .wb-modal-card {
    transform: translateY(0);
  }
}

/* Modal header / body / footer slots */
.wb-modal-header {
  position: sticky; top: 0;
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  background: linear-gradient(180deg, var(--surface-2) 0%, var(--surface-2) 70%, transparent 100%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 1;
}
.wb-modal-title {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--gold, #d4a843);
  letter-spacing: 0.01em;
  flex: 1;
}
.wb-modal-close {
  width: 32px; height: 32px;
  border: none; background: transparent;
  color: var(--text-muted, #6b6b75);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-fast), color var(--dur-fast);
}
.wb-modal-close:hover {
  background: rgba(255,255,255,0.06);
  color: var(--text-primary, #fff);
}
.wb-modal-body { padding: var(--space-4) var(--space-5); }
.wb-modal-footer {
  position: sticky; bottom: 0;
  display: flex; gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
  background: linear-gradient(0deg, var(--surface-2) 0%, var(--surface-2) 70%, transparent 100%);
  border-top: 1px solid rgba(255,255,255,0.06);
  z-index: 1;
}

/* Defeat iOS input auto-zoom inside modals/sheets */
.wb-modal-card input,
.wb-modal-card select,
.wb-modal-card textarea {
  font-size: max(16px, 1rem);
}

/* ─── Toast ────────────────────────────────────────────────────── */

#wb-toast-stack {
  position: fixed;
  top: calc(env(safe-area-inset-top, 0px) + var(--space-4));
  right: calc(env(safe-area-inset-right, 0px) + var(--space-4));
  z-index: var(--z-toast);
  display: flex; flex-direction: column; gap: var(--space-2);
  pointer-events: none;
}

@media (max-width: 768px) {
  #wb-toast-stack {
    top: calc(env(safe-area-inset-top, 0px) + 56px);
    left: var(--space-3);
    right: var(--space-3);
  }
  .wb-toast { max-width: 100% !important; }
}

.wb-toast {
  pointer-events: auto;
  display: grid;
  grid-template-columns: 3px 18px 1fr auto;
  align-items: start;
  gap: 0 var(--space-3);
  padding: var(--space-3) var(--space-4);
  padding-right: calc(var(--space-4) + 4px);
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  box-shadow: var(--elevation-2);
  color: var(--text-primary, #f5f5f7);
  font-family: var(--font-body, 'Inter', sans-serif);
  max-width: 360px;
  position: relative;
  overflow: hidden;
  transform: translateX(20px);
  opacity: 0;
  transition: transform var(--dur-base) var(--ease-out-expo), opacity var(--dur-base) var(--ease-out-expo);
}
.wb-toast.wb-open { transform: translateX(0); opacity: 1; }
.wb-toast.wb-leaving { transform: translateX(20px); opacity: 0; }

.wb-toast-stripe {
  grid-row: 1 / span 2;
  align-self: stretch;
  background: var(--gold, #d4a843);
  border-radius: 2px;
}
.wb-toast.success .wb-toast-stripe { background: #22c55e; }
.wb-toast.error   .wb-toast-stripe { background: #ef4444; }
.wb-toast.warn    .wb-toast-stripe { background: #f59e0b; }
.wb-toast.info    .wb-toast-stripe { background: var(--gold, #d4a843); }

.wb-toast-icon {
  grid-row: 1 / span 2;
  width: 18px; height: 18px;
  margin-top: 2px;
  display: flex; align-items: center; justify-content: center;
  color: inherit;
}
.wb-toast.success .wb-toast-icon { color: #22c55e; }
.wb-toast.error   .wb-toast-icon { color: #ef4444; }
.wb-toast.warn    .wb-toast-icon { color: #f59e0b; }
.wb-toast.info    .wb-toast-icon { color: var(--gold, #d4a843); }

.wb-toast-body {
  display: flex; flex-direction: column; gap: 2px;
  min-width: 0;
}
.wb-toast-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.2;
}
.wb-toast-message {
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--text-secondary, #c8c8d0);
  word-wrap: break-word;
}

.wb-toast-action {
  align-self: center;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--gold, #d4a843);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
}

.wb-toast-progress {
  position: absolute;
  bottom: 0; left: 0;
  height: 2px;
  background: currentColor;
  opacity: 0.65;
  width: 100%;
  transform-origin: left;
  animation: wbToastProgress var(--wb-toast-duration, 3000ms) linear forwards;
}
.wb-toast.success .wb-toast-progress { color: #22c55e; }
.wb-toast.error   .wb-toast-progress { color: #ef4444; }
.wb-toast.warn    .wb-toast-progress { color: #f59e0b; }
.wb-toast.info    .wb-toast-progress { color: var(--gold, #d4a843); }
.wb-toast:hover .wb-toast-progress { animation-play-state: paused; }

@keyframes wbToastProgress {
  to { transform: scaleX(0); }
}

/* ─── Step Flow ────────────────────────────────────────────────── */

.wb-stepflow {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.wb-stepflow-progress {
  display: flex;
  gap: var(--space-1);
}
.wb-stepflow-progress-bar {
  flex: 1;
  height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
  position: relative;
}
.wb-stepflow-progress-bar.done::after,
.wb-stepflow-progress-bar.active::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--gold, #d4a843), #f0c674);
  transform-origin: left;
  animation: wbStepfill var(--dur-slow) var(--ease-out-expo) forwards;
}
.wb-stepflow-progress-bar.done::after  { transform: scaleX(1); }
@keyframes wbStepfill {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

.wb-stepflow-pane {
  animation: wbStepIn var(--dur-base) var(--ease-out-expo);
}
@keyframes wbStepIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Canonical loading / empty ────────────────────────────────── */

.wb-spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(255,255,255,0.15);
  border-top-color: var(--gold, #d4a843);
  border-radius: 50%;
  animation: wbSpin 0.8s linear infinite;
  display: inline-block;
}
@keyframes wbSpin { to { transform: rotate(360deg); } }

.wb-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: var(--space-7) var(--space-4);
  color: var(--text-muted, #6b6b75);
  text-align: center;
  gap: var(--space-2);
}

/* ─── Reduced motion ───────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .wb-modal-backdrop,
  .wb-modal-card,
  .wb-toast,
  .wb-stepflow-pane {
    transition: opacity var(--dur-fast) linear !important;
    animation: none !important;
    transform: none !important;
  }
  .wb-toast-progress { animation-duration: 1ms !important; }
}