/* Notion 设计语言（见 DESIGN.md）：暖纸画布 + 近黑 Inter + 单一 Notion 蓝。 */
:root {
  color-scheme: light;
  --canvas: #f6f5f4;
  --surface: #ffffff;
  --ink: rgba(0, 0, 0, .95);
  --ink-secondary: #31302e;
  --ink-muted: #615d59;
  --ink-faint: #a39e98;
  --hairline: #e6e6e6;
  --hairline-strong: #d9d9d8;
  --primary: #0075de;
  --primary-active: #005bab;
  --primary-soft: #e8f4fd;
  --on-primary: #ffffff;
  --accent-green: #1aae39;
  --green-deep: #14832c;
  --green-soft: #eaf6ec;
  --danger: #e03e3e;
  --danger-soft: #fdeeee;
  --radius-xs: 4px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-soft: rgba(0, 0, 0, .01) 0 .175px 1.041px,
    rgba(0, 0, 0, .02) 0 .8px 2.925px,
    rgba(0, 0, 0, .027) 0 2.025px 7.847px,
    rgba(0, 0, 0, .04) 0 4px 18px;
  --shadow-card: var(--shadow-soft);
  --shadow-hover: rgba(0, 0, 0, .02) 0 1px 3.6px,
    rgba(0, 0, 0, .03) 0 4px 10px,
    rgba(0, 0, 0, .04) 0 8px 24px;
  --shadow-dialog: rgba(0, 0, 0, .02) 0 1px 3.6px,
    rgba(0, 0, 0, .03) 0 6px 16px,
    rgba(0, 0, 0, .05) 0 23px 52px;
  --z-header: 40;
  --z-dialog: 70;
  --z-toast: 90;
  font-family: Inter, -apple-system, "Segoe UI", "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  font-feature-settings: "lnum";
  font-synthesis: none;
}
* { box-sizing: border-box; }

html {
  background: var(--canvas);
  scroll-behavior: smooth;
}

body {
  min-height: 100dvh;
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  line-height: 1.5;
}

body.dialog-open { overflow: hidden; }

button,
input,
select { font: inherit; }

button,
a,
select { touch-action: manipulation; }

button { cursor: pointer; }

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid rgba(0, 117, 222, .4);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  color: var(--on-primary);
  background: var(--ink);
  border-radius: var(--radius-md);
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

/* 顶栏：Notion 白底导航 + 发丝线。 */
.app-header {
  position: sticky;
  z-index: var(--z-header);
  top: 0;
  color: var(--ink);
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--hairline);
  backdrop-filter: blur(14px);
}

.header-inner {
  width: min(100%, 1440px);
  min-height: 76px;
  margin: 0 auto;
  padding: 12px clamp(16px, 3vw, 36px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-block,
.header-actions,
.header-navigation,
.header-nav-link,
.field-label,
.loading-heading,
.refresh-button,
.action-card,
.dialog-head,
.dialog-actions,
.record-action,
.toast { display: flex; align-items: center; }

.brand-block { gap: 12px; min-width: 0; }
.header-actions { justify-content: flex-end; gap: 10px; }
.header-navigation { gap: 8px; }

.brand-mark {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid #d3e9f9;
  border-radius: var(--radius-md);
}

.brand-mark svg { width: 27px; height: 27px; }

.eyebrow,
.section-kicker {
  margin: 0 0 1px;
  color: var(--ink-muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .125px;
  text-transform: uppercase;
}

.brand-block .eyebrow { color: var(--primary); }
.brand-block h1 { margin: 0; font-size: clamp(18px, 2.5vw, 22px); font-weight: 700; line-height: 1.2; letter-spacing: -.125px; }

.header-nav-link {
  min-height: 44px;
  padding: 8px 12px;
  justify-content: center;
  gap: 6px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 180ms ease, border-color 180ms ease;
}

.header-nav-link svg { width: 19px; height: 19px; flex: 0 0 auto; }
.header-nav-link:hover { background: var(--canvas); border-color: var(--hairline-strong); }
.header-nav-link:active { background: #eeedec; }

.page-shell {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: clamp(18px, 3vw, 36px);
}

.action-panel,
.history-section {
  padding: clamp(18px, 3vw, 28px);
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.history-section { margin-top: 28px; }

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.section-heading h2 { margin: 0; font-size: clamp(20px, 3vw, 26px); font-weight: 700; line-height: 1.25; letter-spacing: -.625px; }

.record-count {
  padding: 4px 10px;
  color: var(--primary);
  background: var(--surface);
  border: 1px solid #d3e9f9;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.action-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.action-card {
  min-width: 0;
  min-height: 112px;
  padding: 20px;
  gap: 14px;
  color: var(--ink-secondary);
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  box-shadow: none;
  transition: background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.action-card:hover {
  background: #fbfbfa;
  border-color: var(--hairline-strong);
  box-shadow: var(--shadow-soft);
}

.action-card:active { background: var(--canvas); }
.action-card-primary { border-color: #d3e9f9; background: #fbfdff; }

.action-icon {
  width: 52px;
  height: 52px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  color: var(--primary);
  background: var(--primary-soft);
  border-radius: var(--radius-md);
}

.action-icon svg { width: 28px; height: 28px; }
.action-copy { min-width: 0; flex: 1; display: block; }
.action-copy strong { display: block; font-size: 19px; font-weight: 700; }
.action-copy small { display: block; margin-top: 4px; color: var(--ink-muted); font-size: 14px; line-height: 1.45; }
.action-arrow { width: 22px; height: 22px; flex: 0 0 auto; color: var(--ink-faint); }

.history-toolbar {
  margin-top: 20px;
  display: flex;
  justify-content: flex-end;
  align-items: end;
  gap: 12px;
}

.field-control { display: block; }
.field-label { margin-bottom: 8px; gap: 7px; color: var(--ink-secondary); font-size: 14px; font-weight: 600; }
.field-label svg { width: 19px; height: 19px; flex: 0 0 auto; color: var(--primary); }

.select-wrap { position: relative; display: block; }
.select-wrap select {
  width: 100%;
  min-height: 50px;
  padding: 10px 44px 10px 14px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid #dcdcdc;
  border-radius: var(--radius-xs);
  font-size: 16px;
  font-weight: 500;
  appearance: none;
}

.select-wrap select:not(:disabled) { cursor: pointer; }
.select-wrap select:disabled { color: var(--ink-faint); background: var(--canvas); cursor: wait; }
.select-wrap > svg { position: absolute; top: 50%; right: 14px; width: 20px; height: 20px; color: var(--ink-muted); pointer-events: none; transform: translateY(-50%); }

.refresh-button,
.empty-action {
  min-height: 44px;
  padding: 8px 13px;
  justify-content: center;
  gap: 7px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  font-weight: 500;
}

.refresh-button svg { width: 19px; height: 19px; }
.refresh-button:hover,
.empty-action:hover { background: var(--canvas); border-color: var(--hairline-strong); }
.refresh-button:disabled { color: var(--ink-faint); background: var(--canvas); border-color: var(--hairline); cursor: wait; }

.loading-state,
.empty-state {
  padding: clamp(24px, 5vw, 44px);
  color: var(--ink-muted);
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
}

.loading-heading { justify-content: center; gap: 12px; text-align: left; }
.loading-heading strong,
.loading-heading span { display: block; }
.loading-heading strong { color: var(--ink); }
.loading-heading span { margin-top: 2px; font-size: 14px; }

.loading-spinner,
.button-spinner {
  display: inline-block;
  border: 3px solid var(--primary-soft);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .85s linear infinite;
}

.loading-spinner { width: 28px; height: 28px; flex: 0 0 auto; }
.button-spinner { width: 18px; height: 18px; margin-right: 7px; vertical-align: -3px; }

.skeleton-list { margin-top: 24px; display: grid; gap: 10px; }
.skeleton-list div {
  height: 52px;
  background: linear-gradient(90deg, #efeeed 25%, #e6e5e4 37%, #efeeed 63%);
  background-size: 220% 100%;
  border-radius: var(--radius-md);
  animation: skeleton-sweep 1.3s linear infinite;
}

.empty-state { text-align: center; }
.empty-illustration { width: 64px; height: 64px; margin: 0 auto 12px; color: var(--ink-faint); }
.empty-state h3 { margin: 0; color: var(--ink); font-size: 20px; font-weight: 700; }
.empty-state p { max-width: 560px; margin: 7px auto 0; }
.empty-action { margin-top: 16px; }

.attendance-table-wrap {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
}

.attendance-table-wrap table { width: 100%; border-collapse: collapse; table-layout: auto; }
.attendance-table-wrap th { padding: 12px 14px; color: var(--ink-muted); background: var(--canvas); border-bottom: 1px solid var(--hairline); font-size: 12px; font-weight: 600; text-align: left; white-space: nowrap; }
.attendance-table-wrap td { padding: 13px 14px; color: var(--ink-secondary); border-bottom: 1px solid var(--hairline); font-size: 14px; vertical-align: middle; }
.attendance-table-wrap tbody tr:last-child td { border-bottom: 0; }
.attendance-table-wrap tbody tr:hover { background: #fbfbfa; }
.attendance-table-wrap .number-cell { text-align: right; font-variant-numeric: tabular-nums; }
.attendance-table-wrap td.number-cell { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-weight: 700; }

.record-action {
  min-height: 44px;
  padding: 8px 12px;
  justify-content: center;
  gap: 6px;
  color: var(--primary);
  background: var(--surface);
  border: 1px solid #d3e9f9;
  border-radius: var(--radius-md);
  font-weight: 500;
}

.record-action:hover { background: var(--primary-soft); }
.record-action svg { width: 18px; height: 18px; }

.attendance-card-list { display: grid; grid-template-columns: 1fr; gap: 14px; }
.attendance-card {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  box-shadow: none;
}

.attendance-card-head { padding: 16px; display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--hairline); }
.attendance-card-head h3 { margin: 0; font-size: 18px; font-weight: 700; }
.group-badge { padding: 4px 9px; color: var(--primary); background: var(--primary-soft); border: 1px solid #d3e9f9; border-radius: 999px; font-size: 12px; font-weight: 600; }
.attendance-metrics { margin: 16px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.attendance-metrics > div { padding: 12px; background: var(--canvas); border: 1px solid var(--hairline); border-radius: var(--radius-md); }
.attendance-metrics dt { color: var(--ink-muted); font-size: 12px; font-weight: 500; }
.attendance-metrics dd { margin: 4px 0 0; color: var(--ink); font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.attendance-card .record-action { width: calc(100% - 32px); margin: 0 16px 16px; }

.dialog-layer {
  position: fixed;
  z-index: var(--z-dialog);
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
}

.dialog-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  background: rgba(15, 15, 15, .45);
  border: 0;
  backdrop-filter: blur(4px);
}

.attendance-dialog {
  position: relative;
  width: min(100%, 720px);
  max-height: calc(100dvh - 40px);
  overflow: auto;
  padding: clamp(20px, 4vw, 28px);
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-dialog);
  animation: dialog-in 220ms ease-out;
}

.dialog-head { justify-content: space-between; gap: 16px; }
.dialog-title-block h2 { margin: 0; font-size: clamp(22px, 4vw, 28px); font-weight: 700; letter-spacing: -.25px; }
.icon-button {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  color: var(--ink-secondary);
  background: rgba(0, 0, 0, .05);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
}
.icon-button svg { width: 22px; height: 22px; }
.icon-button:hover { color: var(--ink); background: rgba(0, 0, 0, .09); }

.form-grid { margin-top: 22px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.form-field { min-width: 0; display: block; }
.form-field > span:first-child { display: block; margin-bottom: 7px; color: var(--ink-secondary); font-size: 14px; font-weight: 600; }
.form-field input,
.form-field select {
  width: 100%;
  min-height: 50px;
  padding: 10px 13px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid #dcdcdc;
  border-radius: var(--radius-xs);
  font-size: 16px;
  font-weight: 500;
}

.form-field input:disabled,
.form-field select:disabled { color: var(--ink-faint); background: var(--canvas); cursor: wait; }
.form-field input[aria-invalid="true"],
.form-field select[aria-invalid="true"] { border-color: var(--danger); box-shadow: 0 0 0 3px rgba(224, 62, 62, .1); }
.form-field small { display: block; margin-top: 6px; color: var(--ink-muted); font-size: 12px; line-height: 1.45; }

.input-suffix-wrap { position: relative; display: block; }
.input-suffix-wrap input { padding-right: 58px; }
.input-suffix-wrap > span { position: absolute; top: 50%; right: 13px; color: var(--ink-muted); font-size: 13px; font-weight: 500; transform: translateY(-50%); pointer-events: none; }

.field-error { min-height: 20px; display: block; margin-top: 4px; color: var(--danger); font-size: 13px; font-weight: 500; }
.submit-status { margin: 18px 0 0; padding: 12px 14px; color: var(--primary-active); background: var(--primary-soft); border: 1px solid #d3e9f9; border-radius: var(--radius-md); font-size: 14px; font-weight: 500; }
.submit-status[data-type="error"] { color: var(--danger); background: var(--danger-soft); border-color: #f5d4d4; }

.dialog-actions { margin-top: 22px; justify-content: flex-end; gap: 10px; }
.secondary-button,
.primary-button {
  min-width: 120px;
  min-height: 48px;
  padding: 10px 18px;
  font-weight: 500;
}
.secondary-button { color: var(--ink); background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-md); }
.secondary-button:hover { background: var(--canvas); }
.primary-button { color: var(--on-primary); background: var(--primary); border: 1px solid var(--primary); border-radius: 999px; }
.primary-button:hover { background: var(--primary-active); border-color: var(--primary-active); }
.primary-button:disabled,
.secondary-button:disabled,
.icon-button:disabled { opacity: .58; cursor: wait; }

.toast {
  position: fixed;
  z-index: var(--z-toast);
  left: 50%;
  bottom: max(24px, env(safe-area-inset-bottom));
  width: min(calc(100% - 32px), 620px);
  min-height: 50px;
  padding: 12px 15px;
  gap: 9px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hover);
  font-weight: 500;
  transform: translateX(-50%);
}
.toast[data-type="error"] { background: var(--surface); }
.toast svg { width: 22px; height: 22px; flex: 0 0 auto; color: var(--accent-green); }
.toast[data-type="error"] svg { color: var(--danger); }

[hidden] { display: none !important; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes skeleton-sweep { to { background-position: -120% 0; } }
@keyframes dialog-in {
  from { opacity: 0; transform: translateY(12px) scale(.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (min-width: 640px) and (max-width: 899px) {
  .attendance-card-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 900px) {
  .attendance-card-list { display: none !important; }
  .attendance-table-wrap:not([hidden]) { display: block; }
}

@media (max-width: 899px) {
  .attendance-table-wrap { display: none !important; }
  .attendance-card-list:not([hidden]) { display: grid; }
}

@media (max-width: 760px) {
  .action-grid,
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .header-inner {
    min-height: 0;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "brand" "nav";
    gap: 8px 12px;
  }
  .brand-block { grid-area: brand; }
  .header-actions { display: contents; }
  .header-navigation {
    grid-area: nav;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }
  .header-nav-link { min-width: 0; padding: 8px 6px; }
  .brand-mark { width: 40px; height: 40px; }
  .page-shell { padding: 16px; }
  .action-panel,
  .history-section { padding: 17px; border-radius: var(--radius-lg); }
  .section-heading { align-items: flex-start; }
  .history-toolbar { grid-template-columns: 1fr auto; }
  .dialog-layer { align-items: end; padding: 0; }
  .attendance-dialog { width: 100%; max-height: calc(100dvh - 12px); border-radius: var(--radius-xl) var(--radius-xl) 0 0; animation-name: sheet-in; }
}

@media (max-width: 500px) {
  .history-toolbar { grid-template-columns: 1fr; }
  .refresh-button { width: 100%; }
  .action-card { min-height: 104px; padding: 16px; }
  .action-icon { width: 46px; height: 46px; }
  .action-copy strong { font-size: 18px; }
  .dialog-actions { display: grid; grid-template-columns: 1fr 1.25fr; }
  .secondary-button,
  .primary-button { min-width: 0; width: 100%; }
}

@media (max-width: 430px) {
  .eyebrow { font-size: 10px; letter-spacing: .09em; }
  .header-nav-link { font-size: 12px; gap: 4px; }
  .header-nav-link svg { width: 17px; height: 17px; }
  .record-count { font-size: 12px; }
  .action-card { gap: 11px; }
  .action-copy small { font-size: 13px; }
  .action-arrow { display: none; }
  .attendance-metrics { margin: 14px; }
  .attendance-card .record-action { width: calc(100% - 28px); margin: 0 14px 14px; }
}

@media (max-height: 520px) and (orientation: landscape) {
  .dialog-layer { align-items: stretch; padding: 8px; }
  .attendance-dialog { max-height: calc(100dvh - 16px); border-radius: var(--radius-lg); }
  .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@keyframes sheet-in {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}