/* ===========================================================
   booking page (jyoga.tw/book) — depends on tokens.css + components.css
   =========================================================== */

/* HTML `hidden` 屬性必須勝過 .bk-* 的 display: flex */
[hidden] { display: none !important; }

/* ── layout ─────────────────────────────────────────────── */
.bk-header {
  position: sticky; top: 0; z-index: 10;
  background: var(--bg-page);
  border-bottom: 1px solid var(--border-1);
  padding: 12px 16px;
}
.bk-back {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--fg-2); text-decoration: none;
  font-size: 13px; letter-spacing: 0.06em;
}
.bk-back:hover { color: var(--brand-teal-700); }

.bk-main {
  max-width: 720px; margin: 0 auto; padding: 24px 20px 80px;
}
.bk-intro h1 {
  font-family: var(--font-serif-cjk, 'Noto Serif TC', serif);
  font-size: clamp(28px, 5vw, 36px);
  font-weight: 400; letter-spacing: 0.04em;
  margin: 16px 0 8px;
  color: var(--fg-1);
}
.bk-intro p {
  color: var(--fg-2); font-size: 14px; line-height: 1.6; margin: 0 0 32px;
}

.bk-footer {
  text-align: center; color: var(--fg-3); font-size: 12px; padding: 32px 20px;
  border-top: 1px solid var(--border-1);
}
.bk-footer a { color: var(--brand-teal-700); text-decoration: none; }

/* ── steps ─────────────────────────────────────────────── */
.bk-step {
  background: var(--bg-surface);
  border: 1px solid var(--border-1);
  border-radius: var(--r-lg, 12px);
  padding: 28px 24px;
  margin: 0 0 20px;
  animation: bk-fade-in 320ms var(--ease-out, ease-out);
}
@keyframes bk-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

.bk-step-head {
  display: flex; align-items: center; gap: 14px;
  margin: 0 0 20px;
}
.bk-step-num {
  font-family: var(--font-sans-latin, Jost, sans-serif);
  font-size: 13px; letter-spacing: 0.18em;
  color: var(--brand-teal-700); font-weight: 500;
  background: var(--brand-teal-100);
  padding: 4px 10px; border-radius: var(--r-pill, 999px);
}
.bk-step-head h2 {
  font-family: var(--font-serif-cjk, 'Noto Serif TC', serif);
  font-size: 18px; font-weight: 500; letter-spacing: 0.06em;
  margin: 0; flex: 1; color: var(--fg-1);
}
.bk-edit {
  background: transparent; border: none;
  color: var(--fg-3); font-size: 12px; letter-spacing: 0.04em;
  cursor: pointer; padding: 4px 8px;
}
.bk-edit:hover { color: var(--brand-teal-700); }

.bk-help {
  font-size: 12px; color: var(--fg-3); margin: 16px 0 0; text-align: center;
}

/* ── Step 1: course type cards ─────────────────────────── */
.bk-classes-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media (max-width: 480px) { .bk-classes-grid { grid-template-columns: 1fr; } }

.bk-class-card {
  background: var(--bg-page);
  border: 1px solid var(--border-1);
  border-radius: var(--r-md, 8px);
  padding: 12px 14px; cursor: pointer;
  transition: all 160ms var(--ease-out, ease-out);
  text-align: left;
  display: flex; align-items: center; gap: 10px;
}
.bk-class-card:hover {
  border-color: var(--brand-teal-500);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,.06));
}
.bk-class-card.is-selected {
  border-color: var(--brand-teal-700);
  background: var(--brand-teal-100);
}
.bk-class-info { flex: 1; min-width: 0; }
.bk-class-aside {
  text-align: right; flex-shrink: 0;
  display: flex; flex-direction: column; gap: 2px;
}
.bk-class-tag {
  font-family: var(--font-sans-latin, Jost, sans-serif);
  font-size: 10.5px; letter-spacing: 0.14em;
  color: var(--fg-3); text-transform: uppercase;
}
.bk-class-name {
  font-family: var(--font-serif-cjk, 'Noto Serif TC', serif);
  font-size: 16px; font-weight: 500; letter-spacing: 0.04em;
  color: var(--fg-1); margin: 2px 0 0;
  line-height: 1.3;
}
.bk-class-meta { font-size: 11px; color: var(--fg-2); }
.bk-class-price {
  font-size: 13px; color: var(--brand-teal-800);
  font-weight: 500;
  font-family: var(--font-sans-latin, Jost, sans-serif);
}

/* ── Step 2: dates ──────────────────────────────────────── */
.bk-dates-list {
  display: flex; flex-direction: column; gap: 8px;
}
.bk-date-row {
  display: flex; align-items: center; gap: 16px;
  background: var(--bg-page); border: 1px solid var(--border-1);
  border-radius: var(--r-md, 8px);
  padding: 12px 16px; cursor: pointer;
  transition: all 160ms var(--ease-out, ease-out);
}
.bk-date-row:hover {
  border-color: var(--brand-teal-500);
  background: var(--bg-surface);
}
.bk-date-row.is-selected {
  border-color: var(--brand-teal-700);
  background: var(--brand-teal-100);
}
.bk-date-day {
  font-family: var(--font-sans-latin, Jost, sans-serif);
  font-size: 18px; font-weight: 500;
  color: var(--fg-1); min-width: 64px;
}
.bk-date-day .bk-date-week { display: block; font-size: 11px; color: var(--fg-3); margin-top: 2px; }
.bk-date-times { flex: 1; font-size: 13px; color: var(--fg-2); }
.bk-date-times .bk-time-pill {
  display: inline-block; padding: 1px 7px; margin: 2px;
  background: var(--bg-surface); border: 1px solid var(--border-1);
  border-radius: var(--r-sm, 4px); font-size: 11px;
}
.bk-date-times .is-full { text-decoration: line-through; color: var(--fg-muted); }

/* ── Step 3: time slots ─────────────────────────────────── */
.bk-slots-list {
  display: flex; flex-direction: column; gap: 8px;
}
.bk-slot-row {
  display: grid; grid-template-columns: auto 1fr auto auto;
  gap: 12px; align-items: center;
  background: var(--bg-page); border: 1px solid var(--border-1);
  border-radius: var(--r-md, 8px);
  padding: 14px 16px; cursor: pointer;
  transition: all 160ms var(--ease-out, ease-out);
}
.bk-slot-row:hover:not(.is-disabled) {
  border-color: var(--brand-teal-500);
  background: var(--bg-surface);
}
.bk-slot-row.is-selected {
  border-color: var(--brand-teal-700);
  background: var(--brand-teal-100);
}
.bk-slot-row.is-disabled {
  cursor: not-allowed; opacity: 0.55;
}
.bk-slot-time {
  font-family: var(--font-sans-latin, Jost, sans-serif);
  font-size: 16px; color: var(--fg-1);
}
.bk-slot-name { font-size: 13px; color: var(--fg-2); }
.bk-slot-teacher { font-size: 12px; color: var(--fg-3); }
.bk-slot-avail {
  font-size: 11px; padding: 2px 8px;
  border-radius: var(--r-pill, 999px);
  white-space: nowrap;
}
.bk-slot-avail.green { background: #E5F4EE; color: #0F6B4A; }
.bk-slot-avail.amber { background: #FCF1DC; color: #8C5B0F; }
.bk-slot-avail.red   { background: #FCE0E0; color: #A02525; }

/* ── form fields ──────────────────────────────────────── */
.bk-form { display: flex; flex-direction: column; gap: 0; }
.bk-grid-2 {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 14px 12px;
}
@media (max-width: 540px) { .bk-grid-2 { grid-template-columns: 1fr; } }

.bk-form label {
  display: block; font-size: 13px; color: var(--fg-2);
  letter-spacing: 0.02em;
}
.bk-required { color: var(--brand-pink-500); }
.bk-multi-notice {
  margin: 0 0 16px; padding: 9px 13px;
  font-size: 13px; font-weight: 600;
  color: var(--brand-pink-500);
  background: var(--brand-pink-100, #fdeef2);
  border-radius: 6px;
}

.bk-form input[type=text],
.bk-form input[type=tel],
.bk-form input[type=email],
.bk-form select,
.bk-form textarea {
  width: 100%; box-sizing: border-box;
  margin-top: 6px;
  padding: 11px 12px; font-size: 14px; font-family: inherit;
  background: var(--bg-page);
  border: 1px solid var(--border-1);
  border-radius: var(--r-sm, 6px);
  color: var(--fg-1);
  transition: border-color 120ms;
}
.bk-form input:focus, .bk-form select:focus, .bk-form textarea:focus {
  outline: none;
  border-color: var(--brand-teal-500);
  background: var(--bg-surface);
}
.bk-form textarea { resize: vertical; min-height: 80px; }

.bk-fieldset {
  border: none; padding: 0; margin: 16px 0 0;
}
.bk-fieldset legend {
  font-size: 13px; color: var(--fg-2); margin-bottom: 8px;
}
.bk-checkrow, .bk-radiorow {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.bk-check, .bk-radio {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 12px;
  background: var(--bg-page);
  border: 1px solid var(--border-1);
  border-radius: var(--r-pill, 999px);
  font-size: 13px; color: var(--fg-1);
  cursor: pointer;
  transition: all 120ms;
}
.bk-check:has(input:checked), .bk-radio:has(input:checked) {
  background: var(--brand-teal-100);
  border-color: var(--brand-teal-700);
  color: var(--brand-teal-900);
}
.bk-check input, .bk-radio input { accent-color: var(--brand-teal-700); }

.bk-other-input { margin-top: 8px; }
.bk-transfer-block {
  margin-top: 8px; padding: 12px;
  background: var(--bg-muted);
  border-radius: var(--r-sm, 6px);
}
.bk-transfer-note {
  font-size: 12px; color: var(--fg-2); margin: 0 0 8px;
  font-family: var(--font-sans-latin, Jost, sans-serif);
}

.bk-line-qr {
  margin-top: 12px; text-align: center;
  padding: 16px; background: var(--bg-muted);
  border-radius: var(--r-md, 8px);
}
.bk-line-qr img {
  width: 180px; height: 180px;
  border-radius: var(--r-sm, 6px);
  background: #fff; padding: 8px;
}
.bk-line-qr p { font-size: 12px; color: var(--fg-2); margin: 12px 0; }

/* ── summary + submit ─────────────────────────────────── */
.bk-summary {
  background: var(--brand-teal-100);
  border-radius: var(--r-md, 8px);
  padding: 16px;
  margin: 20px 0;
  font-size: 13px; color: var(--fg-1);
}
.bk-summary h3 {
  font-size: 12px; color: var(--fg-3); letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 8px;
}
.bk-summary dl { margin: 0; }
.bk-summary dt {
  display: inline-block; min-width: 5em; color: var(--fg-3);
  font-size: 12px;
}
.bk-summary dd { display: inline; margin: 0; }
.bk-summary dd::after { content: '\A'; white-space: pre; }

.bk-inline-error {
  background: #FCE0E0;
  color: #A02525;
  border: 1px solid #F2BFBF;
  border-radius: var(--r-md, 8px);
  padding: 12px 16px;
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.6;
  animation: bk-fade-in 240ms var(--ease-out, ease-out);
}
.bk-inline-error a, .bk-inline-error button {
  color: var(--brand-teal-700);
  background: transparent;
  border: none;
  padding: 0;
  font: inherit;
  text-decoration: underline;
  cursor: pointer;
  margin-left: 4px;
}

/* 送出前的「需要加 LINE 才完成」警示 — 比舊 .bk-submit-help 醒目 */
.bk-submit-notice {
  text-align: center;
  background: var(--brand-sun-100, #FCF5E2);
  border: 1px solid var(--brand-sun-300, #F8E6B8);
  border-radius: var(--r-md, 8px);
  padding: 16px 20px;
  margin: 20px 0 16px;
  animation: bk-fade-in 240ms var(--ease-out, ease-out);
}
.bk-submit-notice-icon {
  font-size: 22px; line-height: 1;
  display: inline-block; margin-right: 4px; vertical-align: -2px;
}
.bk-submit-notice p {
  margin: 0; font-size: 15px; line-height: 1.7;
  color: var(--neutral-800, #26221C);
}
.bk-submit-notice strong {
  color: var(--brand-pink-700, #C93668);
  font-weight: 600;
}

.bk-submit-row { text-align: center; margin: 8px 0 0; }
.bk-submit { padding: 14px 48px; font-size: 16px; }
.bk-submit-help {
  font-size: 12px; color: var(--fg-3); margin: 12px 0 0;
}

/* ── overlay (loading + error) ───────────────────────── */
.bk-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(255,255,255,0.85);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.bk-overlay-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-1);
  border-radius: var(--r-md, 8px);
  padding: 28px 36px; min-width: 240px; text-align: center;
  box-shadow: var(--shadow-lg, 0 12px 32px rgba(0,0,0,.12));
}
.bk-spinner {
  width: 28px; height: 28px; margin: 0 auto 12px;
  border: 3px solid var(--border-1);
  border-top-color: var(--brand-teal-700);
  border-radius: 50%;
  animation: bk-spin 800ms linear infinite;
}
@keyframes bk-spin { to { transform: rotate(360deg); } }
.bk-overlay-card p { font-size: 13px; color: var(--fg-2); margin: 0; }

/* ── success screen ──────────────────────────────────── */
.bk-success-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-1);
  border-radius: var(--r-lg, 12px);
  padding: 40px 28px; text-align: center;
  animation: bk-fade-in 320ms var(--ease-out, ease-out);
}
.bk-success-icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  background: var(--brand-teal-700);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
}
.bk-success-card h2 {
  font-family: var(--font-serif-cjk, 'Noto Serif TC', serif);
  font-size: 22px; font-weight: 500;
  margin: 0 0 8px; color: var(--fg-1);
}
.bk-success-card > p { color: var(--fg-2); font-size: 14px; line-height: 1.6; }
.bk-success-action {
  margin: 28px auto 0; max-width: 320px;
  padding: 24px; background: var(--bg-muted);
  border-radius: var(--r-md, 8px);
}
.bk-success-action h3 {
  font-size: 14px; color: var(--fg-1); margin: 0 0 12px;
}
.bk-success-action img {
  width: 200px; height: 200px;
  background: #fff; padding: 8px;
  border-radius: var(--r-sm, 6px);
  margin-bottom: 12px;
}
.bk-success-action p { font-size: 12.5px; color: var(--fg-2); line-height: 1.6; margin: 0 0 14px; }
.bk-success-tip {
  margin: 24px auto 0; max-width: 480px;
  padding: 12px 16px;
  background: var(--brand-sun-100);
  border-radius: var(--r-md, 8px);
  font-size: 13px; color: var(--neutral-700);
}