/**
 * Flowee Continuum — Design System Tokens
 * Online Booking & Scheduling Platform
 * 全站共用；不改業務邏輯，只統一視覺語言。
 */
:root {
  /* Brand */
  --flow-ink: #0b1f24;
  --flow-ink-soft: #243940;
  --flow-muted: #5c6f76;
  --flow-faint: #8a9aa0;
  --flow-canvas: #f5f8f7;
  --flow-surface: #ffffff;
  --flow-surface-2: #eef3f1;
  --flow-line: rgba(11, 31, 36, 0.10);
  --flow-line-strong: rgba(11, 31, 36, 0.16);
  --flow-brand: #1a6b5c;
  --flow-brand-soft: rgba(26, 107, 92, 0.10);
  --flow-brand-strong: #145247;
  --flow-ok: #1f8a6e;
  --flow-warn: #b45309;
  --flow-danger: #b42318;
  --flow-info: #1d6b8a;

  /* Radii / motion / type */
  --flow-radius-sm: 8px;
  --flow-radius: 12px;
  --flow-radius-lg: 16px;
  --flow-shadow: 0 8px 28px rgba(11, 31, 36, 0.06);
  --flow-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --flow-font: "Sora", "Noto Sans TC", "PingFang TC", sans-serif;
  --flow-display: "Sora", "Noto Sans TC", sans-serif;

  /* Legacy bridges — Admin / Booking 既有變數對齊 Continuum（功能不變） */
  --ink: var(--flow-ink);
  --muted: var(--flow-muted);
  --accent: var(--flow-brand);
  --accent-dark: var(--flow-brand-strong);
  --accent-soft: var(--flow-brand-soft);
  --accent-tint: var(--flow-surface-2);
  --accent-border: var(--flow-line-strong);
  --primary-dark: var(--flow-brand-strong);
  --btn-shadow: rgba(26, 107, 92, 0.28);
  --line: #e5ece9;
  --line-strong: #d3ddd9;
  --bg: var(--flow-canvas);
  --card: var(--flow-surface);
  --wkend: #c45c4a;

  /* Safe area — 頂欄請直接用 env()；變數僅作 JS 備援 */
  --safe-t: 0px;
  --safe-r: 0px;
  --safe-l: 0px;
  --safe-b: 0px;
  --safe-head-pad: 2px;
  --safe-head-min-h: 40px;
}

html {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* 共用微互動 */
.flow-ds-btn-press:active {
  transform: scale(0.98);
}

@keyframes flow-rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

@keyframes flow-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes flow-shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* ——— Components (Admin V3) ——— */

.fs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--flow-radius);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform .15s var(--flow-ease), background .15s var(--flow-ease), opacity .15s;
}
.fs-btn:active { transform: scale(0.98); }
.fs-btn-primary {
  background: var(--flow-brand);
  color: #fff;
}
.fs-btn-primary:hover { background: var(--flow-brand-strong); }
.fs-btn-ghost {
  background: transparent;
  color: var(--flow-ink-soft);
  border-color: var(--flow-line-strong);
}
.fs-btn-ghost.btn {
  background: var(--flow-surface);
  color: var(--flow-ink-soft);
  border: 1px solid var(--flow-line-strong);
}

.fs-card {
  background: var(--flow-surface);
  border: 1px solid var(--flow-line);
  border-radius: var(--flow-radius-lg);
  box-shadow: var(--flow-shadow);
}

.fs-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  background: var(--flow-surface-2);
  color: var(--flow-ink-soft);
}
.fs-badge-ok { background: rgba(31, 138, 110, 0.12); color: var(--flow-ok); }
.fs-badge-warn { background: rgba(180, 83, 9, 0.12); color: var(--flow-warn); }

.fs-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
  padding: 36px 20px;
  color: var(--flow-muted);
  animation: flow-fade .25s var(--flow-ease);
}
.fs-empty-ico { font-size: 28px; line-height: 1; opacity: .85; }
.fs-empty-title { margin: 0; font-size: 15px; font-weight: 650; color: var(--flow-ink); }
.fs-empty-desc { margin: 0; font-size: 13px; max-width: 28em; }
.fs-empty .fs-btn { margin-top: 8px; }

/* 全螢幕頂欄：避開 Dynamic Island／瀏海（直接 env，勿只靠變數） */
.flow-safe-top-head {
  box-sizing: border-box;
  flex-wrap: nowrap;
  padding-top: constant(safe-area-inset-top);
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: max(14px, env(safe-area-inset-left, 0px));
  padding-right: max(14px, env(safe-area-inset-right, 0px));
  min-height: calc(56px + env(safe-area-inset-top, 0px));
  height: auto;
}

.fs-skeleton,
.fs-sk-line,
.fs-sk-block {
  background: linear-gradient(90deg, var(--flow-surface-2) 25%, #e4ece9 37%, var(--flow-surface-2) 63%);
  background-size: 200% 100%;
  animation: flow-shimmer 1.2s ease-in-out infinite;
  border-radius: 8px;
}
.fs-sk-line { height: 12px; margin: 8px 0; }
.fs-sk-line.short { width: 42%; }
.fs-sk-block { height: 72px; margin: 8px 0; }

/* Sticky save — 長表單底部永遠可見（輕量毛玻璃，不搶戲） */
.fs-sticky-save {
  position: sticky;
  bottom: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px 12px calc(10px + var(--safe-b, env(safe-area-inset-bottom, 0px)));
  margin-top: 24px;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--flow-line);
  box-shadow: 0 -6px 20px rgba(11, 31, 36, 0.04);
}
.fs-sticky-save .btn,
.fs-sticky-save .fs-btn {
  width: auto;
  flex: 1;
  min-width: 96px;
  min-height: 44px;
  max-width: 200px;
}
.fs-btn-ghost.btn,
.fs-sticky-save .btn-ghost,
.fs-sticky-save .fs-btn-ghost {
  background: transparent;
  color: var(--flow-ink-soft);
  border: 1px solid var(--flow-line-strong);
}
.fs-sticky-save .btn-ghost:hover,
.fs-sticky-save .fs-btn-ghost:hover {
  background: var(--flow-surface-2);
}

.fs-sheet-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0 24px;
}
.fs-sheet-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 12px;
  width: 100%;
  text-align: left;
  padding: 14px 14px;
  border: 1px solid var(--flow-line);
  border-radius: var(--flow-radius);
  background: var(--flow-surface);
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: background .15s var(--flow-ease), border-color .15s;
}
.fs-sheet-row:hover,
.fs-sheet-row:focus-visible {
  background: var(--flow-surface-2);
  border-color: var(--flow-line-strong);
  outline: none;
}
.fs-sheet-row:active { transform: scale(0.99); }
.fs-sheet-row-title { font-weight: 650; font-size: 15px; }
.fs-sheet-row-meta { font-size: 12px; color: var(--flow-muted); grid-column: 1 / -1; }
.fs-sheet-row-amt { font-weight: 650; font-size: 14px; color: var(--flow-ink); }
.fs-sheet-row-status { font-size: 11px; color: var(--flow-muted); justify-self: end; }

@media (prefers-reduced-motion: reduce) {
  .fs-btn,
  .fs-sheet-row,
  .flow-ds-btn-press { transition: none; }
  .fs-skeleton,
  .fs-sk-line,
  .fs-sk-block { animation: none; }
}

/* ——— Badge ——— */
.fs-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 20px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  line-height: 1;
  background: var(--flow-surface-2);
  color: var(--flow-ink-soft);
}
.fs-badge-brand { background: var(--flow-brand-soft); color: var(--flow-brand-strong); }
.fs-badge-warn { background: rgba(180, 83, 9, 0.12); color: var(--flow-warn); }
.fs-badge-danger { background: rgba(180, 35, 24, 0.12); color: var(--flow-danger); }
.fs-badge-ok { background: rgba(31, 138, 110, 0.12); color: var(--flow-ok); }

/* ——— Form helpers ——— */
.fs-label {
  display: block;
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--flow-ink-soft);
}
.fs-hint {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--flow-muted);
  line-height: 1.4;
}
.fs-field { margin-bottom: 14px; }

/* ——— Toast / Dialog（admin-utils FlowDialog／showToast；會員／預約頁也需載入） ——— */
.admin-toast-host {
  position: fixed;
  left: 50%;
  bottom: calc(72px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  z-index: 12000;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
  width: min(92vw, 360px);
}
.admin-toast {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  color: #fff;
  background: #111827;
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .22s ease, transform .22s ease;
}
.admin-toast.show { opacity: 1; transform: translateY(0); }
.admin-toast--success { background: #059669; }
.admin-toast--error { background: #dc2626; }
.admin-toast--info { background: #2563eb; }

.flow-dialog-root {
  position: fixed; inset: 0; z-index: 13000;
  display: flex; align-items: flex-end; justify-content: center;
  pointer-events: none; opacity: 0; visibility: hidden;
  transition: opacity .2s ease, visibility 0s linear .2s;
}
.flow-dialog-root.open {
  pointer-events: auto; opacity: 1; visibility: visible;
  transition: opacity .2s ease, visibility 0s;
}
.flow-dialog-backdrop {
  position: absolute; inset: 0; background: rgba(15, 23, 42, .42);
}
.flow-dialog-sheet {
  position: relative; z-index: 1;
  width: 100%; max-width: 420px;
  margin: 0 12px calc(12px + env(safe-area-inset-bottom, 0px));
  background: #fff; border-radius: 18px;
  padding: 20px 18px 16px;
  box-shadow: 0 20px 48px rgba(15, 23, 42, .22);
  transform: translateY(18px);
  transition: transform .24s cubic-bezier(.32,.72,0,1);
}
.flow-dialog-root.open .flow-dialog-sheet { transform: translateY(0); }
.flow-dialog-title {
  margin: 0 0 8px; font-size: 17px; font-weight: 700; color: #111827; text-align: center;
}
.flow-dialog-msg {
  margin: 0 0 14px; font-size: 14px; line-height: 1.55; color: #4b5563;
  white-space: pre-wrap; word-break: break-word; text-align: center;
}
.flow-dialog-msg.hidden { display: none; }
.flow-dialog-field { margin-bottom: 14px; }
.flow-dialog-field.hidden { display: none; }
.flow-dialog-input {
  width: 100%; box-sizing: border-box;
  padding: 12px 14px; border: 1.5px solid #d1d5db; border-radius: 12px;
  font-size: 16px; background: #f9fafb; color: #111827;
}
.flow-dialog-input:focus {
  outline: none; border-color: #4b5563;
  box-shadow: 0 0 0 3px rgba(75, 85, 99, .14); background: #fff;
}
.flow-dialog-actions { display: flex; gap: 10px; }
.flow-dialog-btn {
  flex: 1; min-height: 46px; border-radius: 12px; border: none;
  font-size: 15px; font-weight: 700; cursor: pointer;
}
.flow-dialog-btn.ghost { background: #f3f4f6; color: #374151; }
.flow-dialog-btn.ghost.hidden { display: none; }
.flow-dialog-btn.primary { background: #111827; color: #fff; }
.flow-dialog-btn:active { transform: scale(0.98); }

.fs-toast-stack {
  position: fixed;
  z-index: 500;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.fs-hover-lift {
  transition: transform .15s var(--flow-ease), box-shadow .15s var(--flow-ease);
}
.fs-hover-lift:hover {
  transform: translateY(-1px);
  box-shadow: var(--flow-shadow);
}