@import url("/static/css/fonts.css");

:root {
  --ink: #1c2430;
  --text: #2a3340;
  --muted: #6b7785;
  --line: #e8edf2;
  --line-2: #d5dde6;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --brand: #2563a8;
  --brand-deep: #1a4f8a;
  --brand-soft: #eaf2fb;
  --ok: #2f8f6b;
  --ok-soft: #e8f6f0;
  --warn: #b06a2b;
  --warn-soft: #fff4e8;
  --danger: #c44b5e;
  --danger-soft: #fdecef;
  --radius: 14px;
  --radius-sm: 10px;
  /* 浅色随机渐变由 JS 写入；此处为默认兜底 */
  --g1: #dbeafe;
  --g2: #e0f2fe;
  --g3: #ecfdf5;
  --g4: #fef3c7;
  --shadow:
    0 1px 0 rgba(255, 255, 255, 0.85) inset,
    0 1px 2px rgba(28, 36, 48, 0.06),
    0 10px 28px rgba(28, 36, 48, 0.08);
  --shadow-sm:
    0 1px 0 rgba(255, 255, 255, 0.9) inset,
    0 1px 2px rgba(28, 36, 48, 0.05),
    0 4px 12px rgba(28, 36, 48, 0.06);
  --shadow-lg:
    0 1px 0 rgba(255, 255, 255, 0.9) inset,
    0 8px 16px rgba(28, 36, 48, 0.08),
    0 24px 48px rgba(28, 36, 48, 0.1);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --display: "Songti SC", "SimSun", "Noto Serif SC", serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
html { background: var(--bg); }
body {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  background:
    radial-gradient(1200px 700px at 12% -10%, var(--g1) 0%, transparent 58%),
    radial-gradient(900px 600px at 92% 8%, var(--g2) 0%, transparent 55%),
    radial-gradient(800px 500px at 70% 95%, var(--g3) 0%, transparent 50%),
    radial-gradient(700px 420px at 5% 85%, var(--g4) 0%, transparent 48%),
    linear-gradient(165deg, #f8fafc 0%, #eef4f9 45%, #f4f7fb 100%);
  background-attachment: fixed;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.45) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.35) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, #000 28%, transparent 78%);
}
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-deep); }

.wrap {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

/* ---------- Nav ---------- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  margin: 12px 0 8px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: calc(var(--radius) + 2px);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transform: translateZ(0);
}
.brand {
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.04em;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.8);
}
.brand span {
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0;
  margin-left: 8px;
}
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}
.nav a {
  color: var(--muted);
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
}
.nav a:hover {
  color: var(--brand);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 36px;
  align-items: stretch;
  padding: 12px 0 40px;
  min-height: 520px;
}
.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 12px 0;
}
.hero-kicker {
  color: var(--brand);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.hero h1 {
  font-family: var(--display);
  font-size: clamp(2.6rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 18px;
  letter-spacing: 0.06em;
}
.hero p {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
  max-width: 28em;
}
.hero-visual {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  min-height: 420px;
  background:
    linear-gradient(165deg, #dbe8f6 0%, #c5daf0 35%, #9ec0e0 70%, #6fa0ce 100%);
  box-shadow: var(--shadow);
}
.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 75% 20%, rgba(255,255,255,0.55), transparent 55%),
    radial-gradient(ellipse 50% 40% at 15% 85%, rgba(37,99,168,0.25), transparent 60%);
  animation: softShift 10s ease-in-out infinite alternate;
}
.hero-visual::after {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: -8%;
  height: 42%;
  background: linear-gradient(180deg, transparent, rgba(26,79,138,0.18));
  border-radius: 50% 50% 0 0;
}
.hero-visual-card {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 20px;
  z-index: 2;
  padding: 18px 20px;
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: 14px;
  backdrop-filter: blur(10px);
}
.hero-visual-card b {
  display: block;
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}
@keyframes softShift {
  from { opacity: 1; transform: scale(1); }
  to { opacity: 0.9; transform: scale(1.04); }
}

.cta { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Buttons ---------- */
.btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  cursor: pointer;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  background: linear-gradient(180deg, #3b7bc4 0%, var(--brand) 55%, var(--brand-deep) 100%);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.28) inset,
    0 2px 0 rgba(15, 50, 90, 0.18),
    0 8px 18px rgba(37, 99, 168, 0.28);
  transform: translateY(0);
  transition: background .15s ease, border-color .15s ease, color .15s ease, box-shadow .15s ease, transform .15s ease;
}
.btn:hover {
  background: linear-gradient(180deg, #4586cd 0%, var(--brand-deep) 100%);
  transform: translateY(-2px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.32) inset,
    0 3px 0 rgba(15, 50, 90, 0.2),
    0 12px 24px rgba(37, 99, 168, 0.32);
}
.btn:active {
  transform: translateY(1px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.15) inset,
    0 1px 0 rgba(15, 50, 90, 0.2),
    0 4px 10px rgba(37, 99, 168, 0.2);
}
.btn.ghost {
  background: linear-gradient(180deg, #ffffff 0%, #f4f7fb 100%);
  color: var(--text);
  border-color: var(--line-2);
  box-shadow: var(--shadow-sm);
}
.btn.ghost:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: linear-gradient(180deg, #ffffff 0%, var(--brand-soft) 100%);
  transform: translateY(-2px);
}
.btn.warn {
  background: #fff;
  color: var(--warn);
  border-color: #efd2b0;
}
.btn.warn:hover { background: var(--warn-soft); }
.btn.danger {
  background: #fff;
  color: var(--danger);
  border-color: #f0c4cb;
}
.btn.danger:hover { background: var(--danger-soft); }
.btn.primary-soft {
  background: var(--brand-soft);
  color: var(--brand);
  border-color: transparent;
}
.btn.primary-soft:hover { background: #dce9f8; }

/* ---------- Panels / sections ---------- */
.panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.88) 100%);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transform: translateZ(0);
  transition: transform .18s ease, box-shadow .18s ease;
}
.panel:hover {
  box-shadow: var(--shadow-lg);
}
.panel h2, .panel h3 {
  margin: 0 0 12px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--ink);
  letter-spacing: 0.03em;
}
.panel > .muted:first-of-type {
  margin-top: -4px;
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  margin: 8px 0 14px;
  letter-spacing: 0.04em;
}
.section-block { margin-bottom: 28px; }

.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.stats-row .panel {
  padding: 18px 20px;
}
.stat .n {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.stat .l {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.86rem;
}

/* ---------- Forms ---------- */
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-2);
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  color: var(--text);
  font: inherit;
  font-size: 0.94rem;
  outline: none;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.9) inset,
    0 2px 6px rgba(28, 36, 48, 0.04);
  transition: border-color .15s ease, box-shadow .15s ease, transform .15s ease;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--brand);
  box-shadow:
    0 0 0 3px rgba(37, 99, 168, 0.14),
    0 1px 0 rgba(255, 255, 255, 0.95) inset,
    0 6px 16px rgba(37, 99, 168, 0.12);
  transform: translateY(-1px);
}
label {
  display: block;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 500;
  margin: 12px 0 6px;
}

table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 0.9rem;
}
th {
  color: var(--muted);
  font-weight: 600;
  background: #fafbfc;
  font-size: 0.82rem;
}
tr:hover td { background: #fafcfe; }

.tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.55) inset,
    0 2px 6px rgba(28, 36, 48, 0.08);
}
.tag.ok { background: var(--ok-soft); color: var(--ok); }
.tag.no { background: var(--danger-soft); color: var(--danger); }

/* ---------- Admin layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 232px 1fr;
  min-height: 100vh;
  background: transparent;
  gap: 0;
}
.side {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  margin: 14px 0 14px 14px;
  padding: 22px 14px;
  background:
    linear-gradient(165deg, rgba(255, 255, 255, 0.96) 0%, rgba(248, 251, 255, 0.9) 100%);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: calc(var(--radius) + 4px);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.95) inset,
    0 10px 28px rgba(28, 36, 48, 0.08),
    0 2px 6px rgba(28, 36, 48, 0.04);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transform: translateZ(0);
  overflow: auto;
}
.side .brand {
  margin-bottom: 18px;
  padding: 4px 10px 14px;
  font-size: 1.42rem;
  border-bottom: 1px solid rgba(213, 221, 230, 0.7);
  text-shadow:
    0 1px 0 #fff,
    0 8px 18px rgba(37, 99, 168, 0.12);
}
.side a {
  display: block;
  padding: 11px 14px;
  border-radius: 12px;
  color: var(--muted);
  margin-bottom: 4px;
  font-weight: 500;
  font-size: 0.94rem;
  border: 1px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
}
.side a.active, .side a:hover {
  background: linear-gradient(180deg, #f4f8fd 0%, #e8f1fb 100%);
  color: var(--brand-deep);
  border-color: rgba(37, 99, 168, 0.12);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.9) inset,
    0 4px 12px rgba(37, 99, 168, 0.12);
  transform: translateY(-1px);
}
.side a.active {
  font-weight: 600;
}
.main {
  padding: 28px 28px 40px 22px;
  min-width: 0;
}
.main h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.65rem;
  color: var(--ink);
  margin: 4px 0 18px;
  letter-spacing: 0.03em;
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.9),
    0 10px 24px rgba(28, 36, 48, 0.08);
}

.toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  align-items: center;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px 10px;
  margin-bottom: 14px;
  align-items: end;
}
.filter-grid label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}
.filter-grid select,
.filter-grid input {
  margin: 0;
  padding: 7px 8px;
  font-size: 0.88rem;
}
.filter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  grid-column: 1 / -1;
}

.table-card {
  overflow: auto;
  padding: 0 !important;
}
.table-card table {
  margin: 0;
  border-collapse: separate;
  border-spacing: 0;
}
.table-card thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: linear-gradient(180deg, #f8fbff 0%, #eef4fb 100%);
  border-bottom: 1px solid var(--line-2);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset;
}
.table-card tbody tr {
  transition: background .12s ease, transform .12s ease;
}
.table-card tbody tr:hover {
  background: rgba(234, 242, 251, 0.65);
}

.pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 14px;
  padding: 12px 14px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(246, 249, 252, 0.92));
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.pager-size {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 500;
}
.pager-size select {
  width: auto;
  min-width: 72px;
  margin: 0;
  padding: 6px 10px;
}
.pager-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.pager-btns .btn {
  min-width: 36px;
  padding: 6px 10px;
  font-size: 0.86rem;
}
.pager-btns .btn.is-current {
  background: linear-gradient(180deg, #3b7cc4, var(--brand));
  color: #fff;
  border-color: transparent;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.25) inset,
    0 4px 12px rgba(37, 99, 168, 0.28);
}
.pager-info {
  margin-left: auto;
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 500;
}

.video-box {
  position: relative;
  background: linear-gradient(180deg, #eef2f6, #e2e8ef);
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line);
}
.video-box::before {
  content: "摄像头预览";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.9rem;
  pointer-events: none;
}
.video-box video,
.video-box canvas,
.video-box img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #111;
}

.muted { color: var(--muted); }
.footer {
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 0.86rem;
  border-top: 1px solid var(--line);
  margin-top: 20px;
}

.site-beian {
  margin: 16px 0 8px;
  padding: 0 4px;
  font-size: 0.75rem;
  text-align: center;
  line-height: 1.5;
  color: var(--muted);
}
.site-beian a {
  color: var(--muted);
  text-decoration: none;
}
.site-beian a:hover {
  text-decoration: underline;
}

.guide-list {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--muted);
  line-height: 1.95;
}
.guide-list li::marker { color: var(--brand); }

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(700px 320px at 50% 0%, rgba(37,99,168,0.08), transparent 60%),
    var(--bg);
}
.login-card { width: min(400px, 100%); }

.alert {
  border: 1px solid #efd2b0;
  background: var(--warn-soft);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-top: 12px;
}
.alert b { color: var(--warn); display: block; margin-bottom: 6px; }
.alert .actions { margin-top: 12px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.stu-card {
  margin-top: 14px;
  padding: 16px;
  border-radius: 12px;
  background: #f8fafc;
  border: 1px solid var(--line);
}
.stu-card .name {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.stu-card .meta {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.75;
  font-size: 0.92rem;
}

.photo-tile {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.photo-tile img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: 10px;
  background: #eef2f6;
  border: 1px solid var(--line);
}
.photo-tile .cap {
  font-size: 0.82rem;
  color: var(--muted);
}

.step-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}
.step-row:last-child { border-bottom: 0; }

.page-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin: 8px 0 18px;
}
.page-head h1 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.04em;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.75);
}
.page-head p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

dialog.panel {
  border: 1px solid rgba(255, 255, 255, 0.9);
  background: linear-gradient(180deg, #ffffff 0%, #f7fafc 100%);
  color: var(--text);
  box-shadow: var(--shadow-lg);
  padding: 24px;
}
.reg-page .nav,
.wrap > .nav {
  margin-left: 0;
  margin-right: 0;
}

@media (max-width: 900px) {
  .hero,
  .layout,
  .grid.cols-2,
  .grid.cols-3,
  .grid.cols-4 { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-visual { min-height: 240px; }
  .side {
    position: relative;
    height: auto;
    margin: 12px 12px 0;
  }
  .nav { flex-direction: column; align-items: flex-start; }
  .main { padding: 16px 12px 28px; }
  .pager-info { margin-left: 0; width: 100%; }
}