/*
 * base.css — 全站设计令牌与通用组件（技术设计 §9：色值只允许出现在这里的 token）
 * 三个端（答题 iPad / 大屏 / 后台）共用：按钮、表单、表格、弹框、flash、倒计时环。
 */

/* ------------------------- 字体（Poppins，font-display: swap） ------------------------- */
@font-face {
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/Poppins-Regular.woff2') format('woff2'),
       url('../fonts/Poppins-Regular.ttf') format('truetype');
}
@font-face {
  font-family: 'Poppins';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/Poppins-Bold.woff2') format('woff2'),
       url('../fonts/Poppins-Bold.ttf') format('truetype');
}

:root {
  /* 取样自设计稿（功能文档 §9） */
  --c-orange: #F26522;
  --c-orange-dark: #cf5115;
  --c-orange-soft: rgba(242, 101, 34, .12);
  --c-deep: #14181C;
  --c-board: #0B0E11;
  --c-page: #F2F3F4;
  --c-card: #FFFFFF;
  --c-text: #14181C;
  --c-muted: #8A9099;
  --c-green: #2E8B57;
  --c-red: #C0392B;
  --c-line: #DFE2E5;
  --c-line-dark: rgba(255, 255, 255, .12);
  --c-orange-pill: #F26522;   /* 大屏 ROUND X OF Y 胶囊底色（设计稿与主橙一致，单列 token 便于微调） */
  --c-live-green: #22C55E;    /* 大屏 LIVE 绿点：比语义绿更亮，远距离可辨 */

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --shadow-1: 0 1px 2px rgba(20, 24, 28, .08), 0 2px 8px rgba(20, 24, 28, .06);
  --shadow-2: 0 8px 28px rgba(20, 24, 28, .18);

  --font: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --nav-h: 56px;
}

*, *::before, *::after { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-page);
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-weight: 700; margin: 0 0 .5em; line-height: 1.25; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1rem; }
p  { margin: 0 0 .8em; }
a  { color: var(--c-orange); text-decoration: none; }
a:hover { text-decoration: underline; }

.upper { text-transform: uppercase; letter-spacing: .06em; }
.muted { color: var(--c-muted); }
.num   { font-variant-numeric: tabular-nums; }
.nowrap{ white-space: nowrap; }
.hidden{ display: none !important; }
.flex  { display: flex; align-items: center; gap: 12px; }
.spread{ display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.wrap  { flex-wrap: wrap; }
.grow  { flex: 1 1 auto; min-width: 0; }
.right { margin-left: auto; }

/* ------------------------------- 按钮 ------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 700 15px/1 var(--font);
  padding: 11px 18px;
  border: 2px solid transparent;
  border-radius: var(--r-md);
  background: var(--c-orange); color: #fff;
  cursor: pointer;
  transition: background .15s, opacity .15s, transform .05s;
  white-space: nowrap;
}
.btn:hover  { background: var(--c-orange-dark); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 3px solid rgba(242, 101, 34, .4); outline-offset: 2px; }
.btn[disabled], .btn.is-busy { opacity: .5; cursor: not-allowed; }
/* 提交类按钮防抖：点击后立即置 disabled 由 app.js 统一处理，这里只画状态 */
.btn.is-busy::after {
  content: ''; width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .45); border-top-color: #fff;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn--ghost  { background: transparent; color: var(--c-text); border-color: var(--c-line); }
.btn--ghost:hover { background: #fff; border-color: var(--c-muted); }
.btn--dark   { background: var(--c-deep); }
.btn--dark:hover { background: #000; }
.btn--danger { background: var(--c-red); }
.btn--danger:hover { background: #9c2d22; }
.btn--sm     { padding: 7px 12px; font-size: 13px; border-radius: var(--r-sm); }
.btn--big    { padding: 18px 30px; font-size: 19px; border-radius: 14px; }
.btn--block  { display: flex; width: 100%; }

/* ------------------------------- 卡片 ------------------------------- */
.card {
  background: var(--c-card);
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-1);
  padding: 20px;
}
.card + .card { margin-top: 16px; }
.card__head { display: flex; align-items: center; gap: 10px; margin: -20px -20px 16px; padding: 14px 20px; border-bottom: 1px solid var(--c-line); }
.card__head h2 { margin: 0; font-size: 1rem; }
.card__title { font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--c-muted); margin-bottom: 12px; }

.badge {
  display: inline-block; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  background: var(--c-orange-soft); color: var(--c-orange);
}
.badge--green { background: rgba(46, 139, 87, .12); color: var(--c-green); }
.badge--orange{ background: var(--c-orange-soft); color: var(--c-orange); }
.badge--grey  { background: #eceef0; color: var(--c-muted); }
.badge--red   { background: rgba(192, 57, 43, .12); color: var(--c-red); }

/* ------------------------------- 表单 ------------------------------- */
.field { margin-bottom: 16px; }
.field > label { display: block; font-weight: 700; font-size: 13px; margin-bottom: 6px; }
.field__help { font-size: 12px; color: var(--c-muted); margin-top: 5px; }
.field__row { display: flex; align-items: center; gap: 12px; }
.input, .select, .textarea {
  width: 100%; font: 400 15px/1.4 var(--font);
  padding: 10px 12px; color: var(--c-text);
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--r-sm);
}
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--c-orange); box-shadow: 0 0 0 3px var(--c-orange-soft);
}
.textarea { min-height: 92px; resize: vertical; }
.input[readonly] { background: #f6f7f8; color: var(--c-muted); }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.check input { width: 18px; height: 18px; accent-color: var(--c-orange); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 0 20px; }
.field--full { grid-column: 1 / -1; }

/* ------------------------------- 表格 ------------------------------- */
.table-wrap { overflow-x: auto; }
table.grid { width: 100%; border-collapse: collapse; font-size: 14px; }
table.grid th, table.grid td { padding: 10px 12px; border-bottom: 1px solid var(--c-line); text-align: left; vertical-align: middle; }
table.grid thead th {
  background: #f7f8f9; font-size: 12px; font-weight: 700;
  letter-spacing: .06em; text-transform: uppercase; color: var(--c-muted); white-space: nowrap;
}
table.grid tbody tr:hover { background: #fbfbfc; }
table.grid td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.grid .actions { text-align: right; white-space: nowrap; }
.empty { padding: 28px; text-align: center; color: var(--c-muted); }

/* ------------------------------- flash ------------------------------- */
.flash-stack { position: fixed; top: 12px; left: 50%; transform: translateX(-50%); z-index: 90; width: min(680px, 92vw); }
.flash {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px; margin-bottom: 8px; border-radius: var(--r-md);
  background: #fff; box-shadow: var(--shadow-2);
  border-left: 5px solid var(--c-muted);
  animation: drop .22s ease-out;
}
@keyframes drop { from { opacity: 0; transform: translateY(-10px); } }
.flash--success { border-left-color: var(--c-green); }
.flash--error   { border-left-color: var(--c-red); }
.flash--warning { border-left-color: var(--c-orange); }
.flash__close { margin-left: auto; border: 0; background: none; font-size: 20px; line-height: 1; color: var(--c-muted); cursor: pointer; }

/* ------------------------------- 弹框 ------------------------------- */
/* 危险操作二次确认（功能文档 §7：参照 vant 风格，居中卡片 + 遮罩） */
.modal { position: fixed; inset: 0; z-index: 100; display: none; }
.modal.is-open { display: block; }
.modal__mask { position: absolute; inset: 0; background: rgba(11, 14, 17, .55); }
.modal__box {
  position: relative; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: min(460px, 92vw); background: #fff; border-radius: var(--r-lg);
  padding: 24px; box-shadow: var(--shadow-2); animation: pop .18s ease-out;
}
@keyframes pop { from { opacity: 0; transform: translate(-50%, -50%) scale(.94); } }
.modal__box h3 { font-size: 1.05rem; }
.modal__text { color: var(--c-text); margin: 0 0 20px; font-size: 15px; }
.modal__foot { display: flex; justify-content: flex-end; gap: 10px; }

/* --------------------------- 分页 / 工具条 --------------------------- */
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar .input, .toolbar .select { width: auto; min-width: 140px; }
.pager { display: flex; align-items: center; gap: 6px; margin-top: 14px; font-size: 14px; }
.pager a, .pager span {
  padding: 6px 11px; border: 1px solid var(--c-line); border-radius: var(--r-sm);
  background: #fff; color: var(--c-text);
}
.pager .is-current { background: var(--c-orange); border-color: var(--c-orange); color: #fff; font-weight: 700; }

/* ------------------------------ 移动端兜底 ------------------------------ */
@media (max-width: 720px) {
  .btn { font-size: 14px; padding: 10px 14px; }
  .card { padding: 14px; }
}

@media print {
  body { background: #fff; }
  .no-print { display: none !important; }
}