:root {
  --bg: #f7f1e8;
  --bg-strong: #efe3d1;
  --surface: rgba(255, 252, 247, 0.92);
  --surface-strong: rgba(255, 248, 240, 0.98);
  --text: #1f1c18;
  --muted: #6b6258;
  --accent: #b6542f;
  --accent-deep: #7c3418;
  --line: rgba(90, 62, 42, 0.16);
  --shadow: 0 18px 40px rgba(99, 54, 17, 0.1);
  --success: #2f7f48;
  --danger: #a13c27;
  --radius: 8px;
  --font-ui: "Segoe UI Variable", "Microsoft YaHei UI", "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-ui);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 220, 180, 0.75), transparent 34%),
    linear-gradient(180deg, #f6efe6 0%, #eadbc9 100%);
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

.shell {
  width: min(1080px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.8fr);
  gap: 20px;
  padding: 28px;
  margin-bottom: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 246, 233, 0.95), rgba(244, 223, 201, 0.88)),
    var(--surface);
  box-shadow: var(--shadow);
}

.hero h1,
.admin-header h1 {
  margin: 10px 0 12px;
  font-size: clamp(2rem, 3vw, 3.2rem);
  line-height: 1.02;
}

.eyebrow {
  margin: 0;
  color: var(--accent-deep);
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
}

.lead,
.section-heading p,
.hint,
.flash-message {
  color: var(--muted);
}

.hero-panel,
.surface {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
}

.stat strong {
  display: block;
  margin: 6px 0;
  font-size: 3.2rem;
  line-height: 1;
  color: var(--accent-deep);
}

.stat-label,
.stat-sub {
  color: var(--muted);
}

.ghost-link,
.secondary-button,
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.ghost-link,
.secondary-button {
  background: rgba(255, 255, 255, 0.58);
}

.primary-button {
  border-color: rgba(124, 52, 24, 0.25);
  color: #fff8f2;
  background: linear-gradient(135deg, var(--accent) 0%, #cb6d2b 100%);
}

.ghost-link:hover,
.secondary-button:hover,
.primary-button:hover {
  transform: translateY(-1px);
}

.secondary-button,
.ghost-link {
  color: var(--text);
}

.surface {
  padding: 24px;
  margin-bottom: 20px;
}

.section-heading {
  margin-bottom: 18px;
}

.section-heading h2,
.section-heading h1 {
  margin: 0 0 8px;
}

.search-grid,
.upload-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  align-items: end;
}

.upload-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-size: 0.95rem;
  color: var(--muted);
}

.field input,
.field select {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid rgba(98, 72, 46, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.85);
  color: var(--text);
}

.field-file input {
  padding: 10px 12px;
}

.schedule-list,
.admin-list {
  display: grid;
  gap: 12px;
}

.schedule-card,
.admin-card {
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
}

.schedule-card-top,
.row-between,
.admin-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(182, 84, 47, 0.14);
  color: var(--accent-deep);
  font-size: 0.9rem;
}

.meta-line {
  color: var(--muted);
  font-size: 0.95rem;
}

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

.text-button {
  display: inline-flex;
  align-items: center;
  color: var(--accent-deep);
  text-decoration: none;
  font-weight: 600;
}

.danger-button {
  border-color: rgba(161, 60, 39, 0.2);
  color: var(--danger);
}

.empty-state {
  padding: 24px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed rgba(98, 72, 46, 0.24);
  border-radius: var(--radius);
}

.login-form {
  display: flex;
  gap: 14px;
  align-items: end;
}

.login-form .field {
  flex: 1;
}

.hidden {
  display: none;
}

.flash-message {
  min-height: 24px;
  margin: 0;
  padding: 4px 2px;
}

.flash-message.success {
  color: var(--success);
}

.flash-message.error {
  color: var(--danger);
}

@media (max-width: 860px) {
  .hero,
  .search-grid,
  .upload-grid,
  .login-form {
    grid-template-columns: 1fr;
    display: grid;
  }

  .login-form {
    align-items: stretch;
  }

  .row-between,
  .schedule-card-top,
  .admin-card-top {
    align-items: flex-start;
    flex-direction: column;
  }

  .shell {
    width: min(100vw - 20px, 100%);
    padding: 16px 0 36px;
  }

  .surface,
  .hero {
    padding: 18px;
  }
}