:root {
  --ink: #12382f;
  --forest: #0d4a3d;
  --forest-deep: #07372f;
  --leaf: #6f8f75;
  --gold: #c39b58;
  --paper: #f5f1e8;
  --white: #fffdf8;
  --muted: #6f756f;
  --line: rgba(18, 56, 47, .14);
  --danger: #a54435;
  --radius: 18px;
  --shadow: 0 22px 60px rgba(7, 55, 47, .12);
  font-family: "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-height: 100%; background: var(--paper); }
body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 95% 8%, rgba(195, 155, 88, .14), transparent 26rem),
    linear-gradient(180deg, #f9f6ef 0%, var(--paper) 100%);
}
button, input, select { font: inherit; }
button, select { min-height: 44px; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid rgba(195, 155, 88, .55);
  outline-offset: 2px;
}

.brand-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 12px max(20px, env(safe-area-inset-left));
  border-bottom: 1px solid rgba(255,255,255,.12);
  color: var(--white);
  background: rgba(7, 55, 47, .96);
  backdrop-filter: blur(14px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: inherit;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(195, 155, 88, .7);
  border-radius: 50%;
  color: #f0d69c;
  font: 700 22px/1 "STKaiti", serif;
}
.brand strong { display: block; letter-spacing: .12em; }
.brand small { display: block; margin-top: 3px; opacity: .62; font-size: 9px; letter-spacing: .16em; }

.customer-shell { max-width: 760px; margin: 0 auto; padding: 34px 18px 120px; }
.schedule-heading { padding: 4px 2px 24px; animation: rise-in .55s ease both; }
.schedule-heading h1, .section-title h1, .workspace-heading h1, .login-panel h1 {
  margin: 6px 0;
  font: 600 clamp(34px, 8vw, 54px)/1.08 "STKaiti", "FangSong", serif;
  letter-spacing: .04em;
}
.eyebrow {
  margin: 0;
  color: var(--gold);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .17em;
  text-transform: uppercase;
}
.subtle { margin: 6px 0 0; color: var(--muted); line-height: 1.65; }
.filters { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 16px 0; }
.date-strip {
  display: grid;
  grid-auto-columns: 56px;
  grid-auto-flow: column;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 0 14px;
  scrollbar-width: none;
}
.date-strip::-webkit-scrollbar { display: none; }
.date-button {
  min-height: 68px;
  padding: 7px 4px;
  border: 0;
  border-radius: 28px;
  color: var(--ink);
  background: transparent;
  transition: color .2s ease, background .2s ease, transform .2s ease;
}
.date-button small, .date-button strong { display: block; }
.date-button small { margin-bottom: 5px; color: inherit; font-size: 11px; opacity: .65; }
.date-button strong { font-size: 17px; }
.date-button.active { color: var(--white); background: var(--forest); transform: translateY(-2px); }
.select-label { display: grid; gap: 7px; color: var(--muted); font-size: 12px; }
select, input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: rgba(255, 253, 248, .82);
}
.schedule-list { display: grid; gap: 0; margin-top: 8px; }
.session-row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  min-height: 112px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  animation: rise-in .45s ease both;
}
.session-time strong { display: block; font-size: 22px; letter-spacing: -.03em; }
.session-time small { color: var(--muted); }
.session-copy h2 { margin: 0 0 6px; font-size: 18px; letter-spacing: .02em; }
.session-copy p { margin: 3px 0; color: var(--muted); font-size: 13px; line-height: 1.45; }
.spots { color: var(--leaf) !important; font-weight: 700; }
.primary-button, .session-action {
  min-height: 46px;
  border: 0;
  border-radius: 999px;
  color: var(--white);
  background: var(--forest);
  box-shadow: 0 8px 22px rgba(13, 74, 61, .18);
}
.primary-button { width: 100%; padding: 11px 20px; font-weight: 700; }
.primary-button.compact { width: auto; }
.session-action { min-width: 74px; padding: 9px 15px; font-size: 13px; }
.session-action.waitlist { color: var(--ink); background: #ead9b7; box-shadow: none; }
.session-action:disabled { cursor: not-allowed; color: var(--muted); background: #e3e2dd; box-shadow: none; }
.quiet-button, .text-button {
  border: 0;
  color: inherit;
  background: transparent;
}
.quiet-button { padding: 8px 10px; }
.text-button { width: 100%; margin-top: 10px; color: var(--forest); }
.brand-header .quiet-button { color: var(--white); }
.empty-state { padding: 76px 20px; text-align: center; color: var(--muted); }
.empty-state span {
  display: grid;
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--gold);
  font: 28px "STKaiti", serif;
}
.empty-state h2 { margin: 0 0 8px; color: var(--ink); font-size: 18px; }
.empty-state p { margin: 0; }
.bottom-nav {
  position: fixed;
  z-index: 30;
  right: 14px;
  bottom: max(14px, env(safe-area-inset-bottom));
  left: 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 430px;
  margin: auto;
  padding: 6px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 22px;
  background: rgba(7, 55, 47, .96);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}
.bottom-nav button { border: 0; border-radius: 17px; color: rgba(255,255,255,.7); background: transparent; }
.bottom-nav button.active { color: var(--forest-deep); background: var(--white); }
.bottom-nav span { margin-right: 6px; }
.section-title, .workspace-heading, .admin-filter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.sheet-dialog {
  width: min(92vw, 460px);
  max-height: 88vh;
  margin: auto;
  padding: 0;
  overflow: auto;
  border: 0;
  border-radius: 24px;
  color: var(--ink);
  background: var(--white);
  box-shadow: var(--shadow);
}
.sheet-dialog::backdrop { background: rgba(3, 24, 20, .58); backdrop-filter: blur(5px); }
.sheet-dialog > form, .sheet-dialog > div { position: relative; padding: 30px 24px; }
.sheet-dialog h2 { margin: 6px 0 12px; font: 600 30px "STKaiti", serif; }
.sheet-dialog label, .login-panel label {
  display: grid;
  gap: 7px;
  margin: 16px 0;
  color: var(--muted);
  font-size: 13px;
}
.dialog-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 44px;
  border: 0;
  border-radius: 50%;
  color: var(--muted);
  background: transparent;
  font-size: 26px;
}
.form-error { min-height: 20px; color: var(--danger); font-size: 13px; }
.toast {
  position: fixed;
  z-index: 50;
  left: 50%;
  bottom: 100px;
  max-width: calc(100vw - 40px);
  padding: 11px 18px;
  border-radius: 999px;
  color: var(--white);
  background: var(--forest-deep);
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 12px);
  transition: opacity .2s ease, transform .2s ease;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.admin-shell { max-width: 1120px; margin: 0 auto; padding: 44px 24px 80px; }
.login-panel { max-width: 420px; margin: 9vh auto 0; padding: 30px; border-top: 4px solid var(--gold); background: var(--white); box-shadow: var(--shadow); }
.workspace-heading { margin-bottom: 24px; }
.admin-filter-row { justify-content: flex-start; padding: 16px 0; border-block: 1px solid var(--line); }
.admin-filter-row .select-label { width: min(280px, 70vw); }
.admin-session-list { margin-top: 14px; }
.admin-session-row {
  display: grid;
  grid-template-columns: 180px minmax(180px, 1fr) 160px auto;
  gap: 20px;
  align-items: center;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line);
}
.admin-session-row h2 { margin: 0 0 5px; font-size: 18px; }
.admin-session-row p { margin: 3px 0; color: var(--muted); font-size: 13px; }
.status-cancelled { color: var(--danger) !important; }
.row-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.row-actions button {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: transparent;
}
.row-actions .danger-button { color: var(--danger); }
.wide-dialog { width: min(94vw, 720px); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.roster-section { margin-top: 24px; }
.roster-section h3 { padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.roster-row { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.roster-row p { margin: 3px 0; }
.roster-row small { color: var(--muted); }
.attendance-actions { display: flex; gap: 6px; }
.attendance-actions button { min-height: 38px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 10px; background: transparent; }
.attendance-actions button.active { color: var(--white); background: var(--forest); }

@keyframes rise-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 680px) {
  .session-row { grid-template-columns: 62px minmax(0, 1fr); }
  .session-action { grid-column: 2; justify-self: start; }
  .admin-session-row { grid-template-columns: 1fr; gap: 8px; }
  .form-grid { grid-template-columns: 1fr; }
  .workspace-heading { align-items: flex-end; }
  .primary-button.compact { padding-inline: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}