:root {
  /* 淡宣紙 · 深褐朱紅 */
  --paper-bg: #faf6ef;
  --paper-surface: #fffdf9;
  --paper-muted: #f5efe4;
  --ink: #2c1810;
  --ink-muted: #5c4a3a;
  --ink-light: #8a7560;

  --brand-brown: #5c4033;
  --brand-brown-dark: #4a3228;
  --brand-red: #8b2500;
  --brand-red-hover: #6d1d00;
  --brand-gold: #c4a574;
  --brand-gold-light: #e8dcc8;

  --ui-primary: var(--brand-brown);
  --ui-primary-hover: var(--brand-brown-dark);
  --ui-accent: var(--brand-red);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --shadow-card: 0 2px 16px rgba(92, 64, 51, 0.1);
  --shadow-soft: 0 1px 4px rgba(92, 64, 51, 0.06);
  --border: #d4c4a8;
  --border-strong: #c4a574;

  /* 命盤專用（chart.html 沿用） */
  --paper: #fffdf9;
  --chart-border: #4a3228;
  --major: #1a237e;
  --green: #2e7d32;
  --red: #c62828;
  --purple: #6a1b9a;
  --line-red: #d32f2f;

  --font-body: 'DFKai-SB', 'BiauKai', '標楷體', 'KaiTi', '楷体', serif;
  --font-brand: 'DFKai-SB', 'BiauKai', '標楷體', 'KaiTi', '楷体', serif;
  --font-chart: 'DFKai-SB', 'BiauKai', '標楷體', 'KaiTi', '楷体', serif;

  --page-bg-image: url('../assets/bg-calligraphy.png');
  --page-bg-overlay: rgba(250, 246, 239, 0.92);
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background-color: var(--paper-bg);
  background-image:
    linear-gradient(var(--page-bg-overlay), var(--page-bg-overlay)),
    var(--page-bg-image);
  background-size: cover;
  background-position: center center;
  background-attachment: fixed;
  background-repeat: no-repeat;
  color: var(--ink);
  min-height: 100vh;
  margin: 0;
}

.chart-panel,
.chart-outer,
#chartView {
  font-family: var(--font-chart);
}

[hidden] {
  display: none !important;
}

/* ── 品牌標題 ── */
.site-brand {
  text-align: center;
  margin-bottom: 14px;
  padding: 14px 8px 16px;
  border-bottom: 1px solid var(--brand-gold-light);
}

.site-brand-name {
  display: block;
  font-family: var(--font-brand);
  font-size: 28px;
  font-weight: 700;
  color: var(--brand-red);
  letter-spacing: 0.22em;
  line-height: 1.35;
}

.site-brand-sub {
  display: block;
  margin-top: 6px;
  font-family: var(--font-brand);
  font-size: 16px;
  color: var(--ink-muted);
  letter-spacing: 0.1em;
  line-height: 1.4;
}

/* ── 登入 / 註冊 ── */
#authGate {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-split-wrap {
  display: flex;
  width: min(100%, 920px);
  align-items: stretch;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-strong);
  background: var(--paper-surface);
}

.auth-ancestor-panel {
  flex: 1 1 52%;
  min-width: 0;
  position: relative;
  background: var(--brand-brown-dark);
  min-height: 420px;
}

.auth-ancestor-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 32%;
  display: block;
}

.auth-ancestor-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 14px 16px 12px;
  margin: 0;
  background: linear-gradient(
    to top,
    rgba(255, 253, 249, 0.92) 0%,
    rgba(255, 253, 249, 0.72) 55%,
    transparent 100%
  );
  color: var(--brand-brown);
  font-family: var(--font-brand);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-align: center;
  line-height: 1.45;
}

.auth-card-in-split {
  flex: 0 0 min(100%, 420px);
  width: min(100%, 420px);
  border: none;
  border-radius: 0;
  box-shadow: none;
}

@media (max-width: 768px) {
  .auth-split-wrap {
    flex-direction: column;
    width: min(100%, 420px);
  }

  .auth-ancestor-panel {
    min-height: 0;
    height: 168px;
    flex: none;
  }

  .auth-card-in-split {
    flex: 1 1 auto;
    width: 100%;
  }
}

.auth-card {
  width: min(100%, 420px);
  background: var(--paper-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

.auth-brand {
  text-align: center;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--brand-gold-light);
}

.auth-brand h1 {
  margin: 0;
  font-family: var(--font-brand);
  color: var(--brand-red);
  font-size: 28px;
  letter-spacing: 0.18em;
  line-height: 1.35;
}

.auth-brand p {
  margin: 8px 0 0;
  font-family: var(--font-brand);
  color: var(--ink-muted);
  font-size: 16px;
  letter-spacing: 0.08em;
}

.auth-form h2 {
  margin: 0 0 6px;
  font-size: 20px;
  color: var(--brand-brown);
}

.auth-note {
  margin: 0 0 14px;
  color: var(--ink-muted);
  font-size: 14px;
  line-height: 1.5;
}

.auth-note-muted {
  margin-top: -8px;
  font-size: 13px;
  color: var(--ink-light);
}

.auth-note-follow {
  margin-top: -6px;
}

.register-birth-fieldset {
  margin: 0 0 14px;
  padding: 12px 14px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.45);
}

.register-birth-fieldset legend {
  padding: 0 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-brown);
}

.register-birth-row {
  margin-bottom: 10px;
}

.register-birth-row.inline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.register-birth-row.inline > label:first-child {
  min-width: 2.5em;
  margin-bottom: 0;
  font-weight: 600;
  color: var(--ink-muted);
}

.register-birth-row.inline label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 0;
  cursor: pointer;
}

.register-birth-row label {
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
  color: var(--ink-muted);
}

.register-birth-row input[type="date"],
.register-birth-row input[type="number"],
.register-birth-row select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 9px 10px;
  font-family: inherit;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--paper-surface);
  color: var(--ink);
}

.register-date-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.register-date-row label {
  font-size: 12px;
}

.auth-form .hidden {
  display: none !important;
}

.auth-form label {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--ink-muted);
}

.auth-form input {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 9px 10px;
  font-family: inherit;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--paper-surface);
  color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.auth-form input:focus {
  outline: none;
  border-color: var(--brand-gold);
  box-shadow: 0 0 0 2px rgba(196, 165, 116, 0.25);
}

.auth-form button[type="submit"] {
  width: 100%;
  margin-top: 8px;
  padding: 11px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--ui-primary);
  color: #fff;
  font-family: inherit;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.2s;
}

.auth-form button[type="submit"]:hover {
  background: var(--ui-primary-hover);
}

.auth-link-btn {
  width: 100%;
  margin-top: 12px;
  padding: 0;
  border: none;
  background: none;
  color: var(--brand-red);
  cursor: pointer;
  font-family: inherit;
  text-decoration: underline;
  font-size: 14px;
}

.auth-error {
  margin: 8px 0;
  color: var(--red);
  font-size: 14px;
}

.auth-success {
  margin: 8px 0;
  color: var(--green);
  font-size: 14px;
  line-height: 1.5;
}

/* ── 右側功能欄（帳號 + 會員功能） ── */
.app-toolbar {
  background: var(--paper-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.app-toolbar-account {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.app-toolbar-account .user-bar-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--brand-brown);
  text-align: center;
  line-height: 1.4;
  word-break: break-all;
}

#userBar button,
.app-toolbar .member-actions button {
  border: 1px solid var(--border);
  background: var(--paper-surface);
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: 17px;
  line-height: 1.35;
  color: var(--ink-muted);
  transition: background 0.2s, border-color 0.2s;
}

#userBar button:hover,
.app-toolbar .member-actions button:hover {
  background: var(--paper-muted);
  border-color: var(--border-strong);
}

.app-toolbar .member-actions button.member-feature-locked {
  opacity: 0.88;
  border-style: dashed;
  cursor: pointer;
  pointer-events: auto;
}

.app-toolbar .member-actions button.member-feature-locked:hover {
  opacity: 1;
  border-color: var(--brand-gold);
}

/* ── 左側表單面板 ── */
.form-panel {
  background: var(--paper-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  font-size: 20px;
}

.form-panel h2 {
  color: var(--brand-brown);
  letter-spacing: 0.1em;
  font-size: 22px;
}

.form-panel label {
  color: var(--ink-muted);
  font-size: 20px;
}

.form-panel input[type="text"],
.form-panel input[type="date"],
.form-panel input[type="number"],
.form-panel select {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--paper-surface);
  transition: border-color 0.2s;
  font-size: 20px;
}

.form-panel input:focus,
.form-panel select:focus {
  outline: none;
  border-color: var(--brand-gold);
}

.form-panel button {
  border-radius: var(--radius-sm);
  background: var(--ui-primary);
  transition: background 0.2s;
  font-size: 20px;
}

.form-panel button:hover {
  background: var(--ui-primary-hover);
}

.form-panel button.secondary {
  background: var(--paper-surface);
  color: var(--ink-muted);
  border: 1px solid var(--border);
}

.form-panel button.secondary:hover {
  background: var(--paper-muted);
  border-color: var(--border-strong);
}

.member-section {
  border-top-color: var(--brand-gold-light);
}

.member-section h3 {
  color: var(--brand-brown);
  font-size: 18px;
}

.membership-panel {
  margin-bottom: 1rem;
  padding: 1rem;
  background: var(--paper-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 17px;
}

.membership-alert {
  color: var(--brand-brown);
  margin: 0 0 0.75rem;
  font-weight: 600;
}

.membership-note {
  color: var(--ink-muted);
  margin: 0;
  font-size: 16px;
  line-height: 1.5;
}

.membership-plans {
  display: grid;
  gap: 0.75rem;
}

.membership-plan-card {
  padding: 0.875rem;
  background: var(--paper-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.membership-plan-card h4 {
  margin: 0 0 0.35rem;
  color: var(--brand-brown);
}

.membership-plan-desc {
  margin: 0 0 0.5rem;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.membership-plan-price {
  margin: 0 0 0.5rem;
  font-weight: 700;
  color: var(--brand-brown);
}

.membership-plan-tag {
  margin: 0 0 0.5rem;
  color: var(--green);
  font-size: 0.85rem;
}

.membership-pay-btn {
  width: 100%;
}

.membership-active p {
  margin: 0.35rem 0;
  color: var(--ink);
  font-size: 17px;
  line-height: 1.5;
}

.chart-type-note {
  margin: 0.35rem 0 0.75rem;
  font-size: 16px;
  line-height: 1.5;
}

.chart-type-premium input:disabled + *,
.chart-type-premium:has(input:disabled) {
  opacity: 0.55;
}

.calendar-note {
  color: var(--green);
  font-size: 16px;
}

/* ── 命盤資料庫 ── */
.chart-database {
  background: var(--paper-surface);
  border-color: var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.chart-db-header h2 {
  color: var(--brand-brown);
}

.chart-db-search input[type="search"] {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.chart-db-search button {
  background: var(--ui-primary);
  border-radius: var(--radius-sm);
}

.chart-db-search button:hover {
  background: var(--ui-primary-hover);
}

.chart-db-table th {
  background: var(--paper-muted);
  color: var(--brand-brown);
}

.chart-db-table .db-actions button.save-active {
  background: var(--ui-primary);
  border-color: var(--ui-primary);
}

/* ── 管理員面板 ── */
#adminPanel {
  background: var(--paper-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

#adminPanel table {
  border-color: var(--border);
}

#adminPanel th {
  background: var(--paper-muted);
  color: var(--brand-brown);
}

.password-modal-card {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-card);
}

.password-modal-card h3 {
  color: var(--brand-brown);
}

.password-modal-actions button[type="submit"] {
  background: var(--ui-primary);
}

/* ── 管理員會員資料庫 ── */
.admin-member-db {
  background: var(--paper-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-soft);
}

.admin-member-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.admin-member-header h1,
.admin-member-header h2 {
  margin: 0;
  color: var(--brand-brown);
}

.admin-member-subtitle {
  margin: 4px 0 0;
  color: var(--ink-muted);
  font-size: 14px;
}

.admin-member-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.admin-member-tab {
  border: 1px solid var(--border);
  background: var(--paper-muted);
  color: var(--brand-brown);
  border-radius: 999px;
  padding: 8px 14px;
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
}

.admin-member-tab.is-active {
  background: var(--brand-brown);
  border-color: var(--brand-brown);
  color: #fff;
}

.admin-member-note {
  margin: 0 0 12px;
  color: var(--ink-muted);
  font-size: 13px;
  line-height: 1.5;
}

.admin-empty {
  text-align: center;
  color: var(--ink-muted);
  padding: 24px 12px !important;
}

@media print {
  body {
    background: #fff !important;
    background-image: none !important;
  }
}