:root {
  --admin-bg: #f0ede8;
  --admin-sidebar: #2c2620;
  --admin-sidebar-hover: #ff7a28;
  --admin-card: #fff;
  --admin-border: #e0dcd4;
  --admin-text: #222;
  --admin-muted: #666;
}

* {
  box-sizing: border-box;
}

body.admin-body {
  margin: 0;
  min-height: 100vh;
  background: var(--admin-bg);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 14px;
  color: var(--admin-text);
}

a {
  color: #1565c0;
}

.admin-layout {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--admin-sidebar);
  color: #eee;
  padding: 20px 0;
}

.admin-brand {
  padding: 0 20px 20px;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 12px;
}

.admin-sidebar nav a {
  display: block;
  padding: 10px 20px;
  color: #ccc;
  text-decoration: none;
}

.admin-sidebar nav a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--admin-sidebar-hover);
}

.admin-main {
  flex: 1;
  padding: 24px 32px 48px;
  min-width: 0;
}

.admin-page-title {
  margin: 0 0 20px;
  font-size: 1.35rem;
  font-weight: 800;
}

.admin-msg {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
}

.admin-msg--ok {
  background: #e8f5e9;
  color: #1b5e20;
}

.admin-msg--err {
  background: #ffebee;
  color: #b71c1c;
}

.admin-toolbar {
  margin-bottom: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.admin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border-radius: 8px;
  border: 0;
  background: linear-gradient(to bottom, #ff9d5c, #ff7a28);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  font-size: 14px;
}

.admin-btn--ghost {
  background: #fff;
  border: 1px solid var(--admin-border);
  color: var(--admin-text);
}

.admin-table-wrap {
  background: var(--admin-card);
  border-radius: 10px;
  border: 1px solid var(--admin-border);
  overflow-x: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.admin-table th,
.admin-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--admin-border);
  vertical-align: middle;
}

.admin-table th {
  background: #f5f2ed;
  font-weight: 700;
}

.admin-table img.thumb {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 6px;
}

/* 后台表格操作区：未加类名的链接/按钮统一按钮化 */
.admin-table td a:not(.admin-btn) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid var(--admin-border);
  background: #fff;
  color: var(--admin-text);
  font-size: 12px;
  line-height: 1.2;
  text-decoration: none;
  margin-right: 6px;
}

.admin-table td a:not(.admin-btn):hover {
  border-color: #ff9d5c;
  color: #c2410c;
  background: #fffaf6;
}

.admin-table td button:not(.admin-btn) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid var(--admin-border);
  background: #fff;
  color: var(--admin-text);
  font-size: 12px;
  line-height: 1.2;
  cursor: pointer;
  margin-right: 6px;
}

.admin-table td button:not(.admin-btn):hover {
  border-color: #ff9d5c;
  color: #c2410c;
  background: #fffaf6;
}

.admin-form {
  max-width: 720px;
  background: var(--admin-card);
  padding: 20px 24px;
  border-radius: 10px;
  border: 1px solid var(--admin-border);
}

.admin-form .row {
  margin-bottom: 16px;
}

.admin-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
}

.admin-form input[type="text"],
.admin-form input[type="number"],
.admin-form input[type="file"],
.admin-form select,
.admin-form textarea {
  width: 100%;
  max-width: 480px;
  padding: 8px 10px;
  border: 1px solid var(--admin-border);
  border-radius: 8px;
  font-size: 14px;
}

.admin-form textarea {
  min-height: 100px;
  resize: vertical;
}

.admin-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.admin-stat-card {
  background: var(--admin-card);
  border: 1px solid var(--admin-border);
  border-radius: 10px;
  padding: 20px;
}

.admin-stat-card .num {
  font-size: 1.75rem;
  font-weight: 800;
  color: #ff7a28;
}

.admin-stat-card .lbl {
  font-size: 0.9rem;
  color: var(--admin-muted);
  margin-top: 6px;
}

/* —— 数据看板 —— */
.admin-dash {
  position: relative;
}

.admin-dash-hero {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 20px;
  padding: 22px 24px;
  background: linear-gradient(135deg, #3d3318 0%, #2c2620 48%, #4a3d1a 100%);
  color: #fff;
  box-shadow: 0 10px 32px rgba(44, 38, 32, 0.2);
}

.admin-dash-hero__decor {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background:
    radial-gradient(circle at 88% 20%, rgba(255, 157, 92, 0.55) 0%, transparent 42%),
    radial-gradient(circle at 12% 80%, rgba(212, 160, 18, 0.35) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.admin-dash-hero__inner {
  position: relative;
  z-index: 1;
}

.admin-dash-hero__eyebrow {
  margin: 0 0 6px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255, 200, 140, 0.95);
}

.admin-dash-hero__title {
  margin: 0 0 8px;
  font-size: 1.25rem;
  font-weight: 800;
}

.admin-dash-hero__sub {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.78);
  max-width: 520px;
}

.admin-dash-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.admin-dash-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  background: linear-gradient(to bottom, #ff9d5c, #ff7a28);
  color: #fff !important;
  box-shadow: 0 2px 10px rgba(255, 122, 40, 0.25);
  border: 0;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.admin-dash-pill:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(255, 122, 40, 0.35);
  color: #fff !important;
}

.admin-dash-pill--ghost {
  background: #fff;
  color: #5d4e32 !important;
  border: 1px solid var(--admin-border);
  box-shadow: none;
}

.admin-dash-pill--ghost:hover {
  border-color: #ff9d5c;
  color: #c2410c !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.admin-dash-section-title {
  margin: 0 0 14px;
  font-size: 1.05rem;
  font-weight: 800;
  color: #3d3318;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(255, 122, 40, 0.35);
}

.admin-dash .admin-stat-grid + .admin-dash-section-title {
  margin-top: 32px;
}

.admin-stat-card--pulse {
  border-color: rgba(255, 152, 0, 0.55);
  box-shadow: 0 0 0 1px rgba(255, 152, 0, 0.15);
  background: linear-gradient(180deg, #fffefb 0%, #fff 100%);
}

.admin-stat-card--pulse .num {
  color: #e65100;
}

/* 科普文章编辑页 */
.science-edit-form {
  max-width: 760px;
  background: linear-gradient(180deg, #fff 0%, #fffdf8 100%);
}

.science-edit-form__textarea {
  width: 100%;
  font-family: inherit;
  min-height: 300px;
}

.science-edit-form__preview-wrap {
  margin: 8px 0 4px;
}

.science-edit-form__preview-img {
  max-width: 320px;
  border-radius: 10px;
  border: 1px solid #eee;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
}

.science-edit-form__remove {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  color: #5f5347;
}

.science-edit-form__actions {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.science-edit-sep {
  margin: 32px 0;
  border: none;
  border-top: 1px solid #e8e4dc;
}

.science-edit-title {
  font-size: 1.1rem;
  margin: 0 0 14px;
}

.science-edit-comments {
  max-width: 760px;
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
}

.science-edit-comments__content {
  max-width: 360px;
  line-height: 1.5;
  color: #3c342a;
}

.science-edit-btn-danger {
  padding: 2px 8px;
  font-size: 12px;
  color: #b71c1c;
  border-color: #ffcdd2;
  background: #ffebee;
}

.science-edit-delete-form {
  margin-top: 24px;
}

/* —— 后台登录页（品牌视觉） —— */
:root {
  --login-cream: #faf6ec;
  --login-cream-deep: #f3e8d4;
  --login-gold: #d4a012;
  --login-gold-light: #e8c04a;
  --login-gold-soft: rgba(212, 160, 18, 0.18);
}

body.admin-login-page {
  margin: 0;
  min-height: 100vh;
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: linear-gradient(165deg, #fffdf8 0%, var(--login-cream) 38%, var(--login-cream-deep) 100%);
  color: #2c2419;
  position: relative;
  overflow-x: hidden;
}

.admin-login-decor {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.admin-login-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(0.5px);
}

.admin-login-blob--1 {
  width: 420px;
  height: 420px;
  top: -120px;
  right: -80px;
  background: radial-gradient(circle, rgba(232, 192, 74, 0.35) 0%, rgba(243, 232, 212, 0) 70%);
}

.admin-login-blob--2 {
  width: 320px;
  height: 320px;
  bottom: -60px;
  left: -100px;
  background: radial-gradient(circle, rgba(212, 160, 18, 0.22) 0%, transparent 65%);
}

.admin-login-blob--3 {
  width: 180px;
  height: 180px;
  top: 42%;
  left: 8%;
  background: radial-gradient(circle, rgba(255, 200, 120, 0.2) 0%, transparent 70%);
}

.admin-login-ring {
  position: absolute;
  width: min(90vw, 520px);
  height: min(90vw, 520px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -48%);
  border: 1px solid rgba(212, 160, 18, 0.12);
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.5);
}

.admin-login-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--login-gold-light);
  opacity: 0.45;
  box-shadow: 0 0 0 4px var(--login-gold-soft);
}

.admin-login-dot--a {
  top: 18%;
  right: 22%;
}

.admin-login-dot--b {
  top: 55%;
  right: 12%;
}

.admin-login-dot--c {
  bottom: 28%;
  left: 18%;
}

.admin-login-dot--d {
  top: 32%;
  left: 12%;
}

.admin-login-inner {
  position: relative;
  z-index: 1;
  max-width: 420px;
  margin: 0 auto;
  padding: 32px 20px 48px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-sizing: border-box;
}

.admin-login-brand {
  text-align: center;
  margin-bottom: 24px;
}

.admin-login-logo-wrap {
  display: inline-block;
  padding: 12px 20px 8px;
  background: rgba(255, 255, 255, 0.65);
  border-radius: 24px;
  box-shadow: 0 8px 32px rgba(212, 160, 18, 0.12), 0 1px 0 rgba(255, 255, 255, 0.9) inset;
  border: 1px solid rgba(212, 160, 18, 0.15);
  margin-bottom: 16px;
}

.admin-login-logo {
  display: block;
  width: min(200px, 72vw);
  height: auto;
  margin: 0 auto;
}

.admin-login-title {
  margin: 0 0 8px;
  font-size: 1.35rem;
  font-weight: 800;
  color: #3d331f;
  letter-spacing: 0.02em;
}

.admin-login-sub {
  margin: 0;
  font-size: 0.92rem;
  color: #6b5d45;
  line-height: 1.5;
}

.admin-login-switch {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.admin-login-switch__btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 12px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(212, 160, 18, 0.35);
  background: rgba(255, 255, 255, 0.75);
  color: #6b5d45 !important;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.admin-login-switch__btn:hover {
  border-color: rgba(255, 122, 40, 0.45);
  color: #c2410c !important;
  background: #fff;
}

.admin-login-switch__btn--active {
  border-color: rgba(212, 160, 18, 0.55);
  background: linear-gradient(180deg, rgba(255, 248, 232, 0.95) 0%, #fff 100%);
  color: #3d3318 !important;
  box-shadow: 0 2px 12px rgba(212, 160, 18, 0.12);
  cursor: default;
  pointer-events: none;
}

.admin-login-notice {
  margin-bottom: 16px;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(212, 160, 18, 0.28);
  font-size: 0.9rem;
  line-height: 1.65;
  color: #5d4e32;
  box-shadow: 0 2px 12px rgba(60, 40, 10, 0.04);
}

.admin-login-notice strong {
  color: #3d3318;
}

.admin-login-code {
  display: inline-block;
  margin: 2px 0;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(212, 160, 18, 0.2);
  font-size: 0.88rem;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

.admin-login-msg {
  margin-bottom: 14px;
}

.admin-login-card {
  padding: 24px 22px 22px;
  border-radius: 16px;
  border: 1px solid rgba(212, 160, 18, 0.2);
  box-shadow: 0 12px 40px rgba(60, 40, 10, 0.08), 0 1px 0 rgba(255, 255, 255, 0.85) inset;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
}

.admin-login-card .form-group label {
  color: #4a4030;
  font-weight: 600;
}

.admin-login-page .admin-login-submit.btn-primary {
  width: 100%;
  margin-top: 8px;
  min-height: 48px;
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: 12px;
  border: none;
  background: linear-gradient(180deg, var(--login-gold-light) 0%, var(--login-gold) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(212, 160, 18, 0.35);
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.admin-login-page .admin-login-submit.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(212, 160, 18, 0.42);
}

.admin-login-page .admin-login-submit.btn-primary:active {
  transform: translateY(0);
}

.admin-login-footer {
  text-align: center;
  margin-top: 22px;
  font-size: 0.95rem;
}

.admin-login-footer a {
  color: #8a6d2e;
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid rgba(138, 109, 46, 0.35);
}

.admin-login-footer a:hover {
  color: var(--login-gold);
  border-bottom-color: var(--login-gold);
}

@media (max-width: 480px) {
  .admin-login-inner {
    padding-top: 24px;
    justify-content: flex-start;
  }

  .admin-login-ring {
    opacity: 0.6;
  }
}