/* ==========================================================================
   蓝稻法考 · 登录后界面视觉升级（2026-09-23）
   功能不变，只统一色彩、圆角、阴影、间距与层级，弱化"模板感"。
   桌面端（public/exam）与 APP 端（public/app）共用，加载顺序在既有样式之后。
   两端各自使用不同的变量名：桌面端为 --blue/--bg/--text 等，
   APP 端为 --brand/--canvas/--ink 等，因此可以在同一个文件里并存。
   ========================================================================== */

:root {
  /* ---- 桌面端变量 ---- */
  --blue: #2f74c8;
  --blue-deep: #245c9f;
  --blue-soft: #eef4fb;
  --purple: #5b6ea8;
  --teal: #2b8f8a;
  --green: #2ea06a;
  --orange: #d98a2b;
  --red: #d45b57;
  --bg: #f2f4f8;
  --text: #1c2b42;
  --muted: #55637a;
  --soft: #8b98ab;
  --line: #e7ebf1;
  --card: #ffffff;
  --shadow: 0 12px 30px -22px rgba(28, 43, 66, 0.4), 0 1px 2px rgba(28, 43, 66, 0.04);
  --shadow-soft: 0 8px 20px -16px rgba(28, 43, 66, 0.34);
  --radius: 18px;

  /* ---- APP 端变量 ---- */
  --canvas: #f3f5f9;
  --surface-soft: #f7f9fc;
  --ink: #1b2a41;
  --ink-secondary: #55637a;
  --ink-muted: #8b98ab;
  --brand: #2f74c8;
  --brand-deep: #245c9f;
  --amber: #d98a2b;
  --coral: #d45b57;
  --violet: #5f6fb0;
  --shadow-raised: 0 16px 34px -22px rgba(47, 116, 200, 0.5), 0 2px 6px rgba(28, 43, 66, 0.05);
  --app-top-gradient: radial-gradient(ellipse 92% 100% at 100% 0%, #cfe0f7 0%, #dce9fa 32%, #eaf2fd 58%, rgba(244, 248, 253, 0.75) 78%, rgba(255, 255, 255, 0) 100%);
}

/* ============================== 桌面端 ============================== */

body:not(.app-login-shell) {
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

body:not(.app-login-shell) .sidebar {
  background: #ffffff;
  border-right: 1px solid var(--line);
}

body:not(.app-login-shell) .side-nav a,
body:not(.app-login-shell) .side-bottom a {
  min-height: 42px;
  border-radius: 12px;
  color: #5c6b83;
  font-weight: 600;
  transition: background 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

body:not(.app-login-shell) .side-nav a:hover,
body:not(.app-login-shell) .side-bottom a:hover {
  background: #f5f8fc;
  color: var(--blue-deep);
}

body:not(.app-login-shell) .side-nav a.active,
body:not(.app-login-shell) .side-nav a[aria-current="page"] {
  color: var(--blue-deep);
  background: var(--blue-soft);
  box-shadow: inset 0 0 0 1px rgba(47, 116, 200, 0.14);
}

body:not(.app-login-shell) .page-head h1 {
  color: var(--text);
  font-size: 27px;
  font-weight: 800;
  letter-spacing: -0.3px;
}

body:not(.app-login-shell) .page-head p {
  margin-top: 6px;
  color: var(--soft);
  font-size: 13.5px;
}

body:not(.app-login-shell) .panel,
body:not(.app-login-shell) .stat-card,
body:not(.app-login-shell) .feature-card,
body:not(.app-login-shell) .practice-paper-subjects {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: var(--shadow);
}

body:not(.app-login-shell) .feature-card,
body:not(.app-login-shell) .stat-card {
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

body:not(.app-login-shell) .feature-card:hover,
body:not(.app-login-shell) .stat-card:hover {
  transform: translateY(-3px);
  border-color: #dbe6f5;
  box-shadow: 0 18px 36px -22px rgba(28, 43, 66, 0.45);
}

body:not(.app-login-shell) .feature-card h3 {
  font-size: 19px;
  font-weight: 750;
}

body:not(.app-login-shell) .feature-card p,
body:not(.app-login-shell) .stat-card p {
  color: var(--soft);
}

/* 快捷入口：图标改为轻量线条图标（右上角小色块），按钮跟随卡片主题色，避免整排蓝 */
body:not(.app-login-shell) .feature-card {
  padding: 24px 26px 22px;
}

body:not(.app-login-shell) .feature-card .feature-visual {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin: 0;
  border-radius: 14px;
  box-shadow: none;
  background: var(--feature-tint, #eef2f8);
  color: var(--feature-ink, #55637a);
}

body:not(.app-login-shell) .feature-card .feature-visual svg {
  width: 22px;
  height: 22px;
}

body:not(.app-login-shell) .feature-card h3 {
  padding-right: 56px;
}

body:not(.app-login-shell) .feature-card.teal {
  --feature-tint: #e6f5f2;
  --feature-ink: #1f8b80;
}

body:not(.app-login-shell) .feature-card.blue {
  --feature-tint: #e9f1fb;
  --feature-ink: #2f74c8;
}

body:not(.app-login-shell) .feature-card.purple {
  --feature-tint: #eef0fa;
  --feature-ink: #5f6fb0;
}

body:not(.app-login-shell) .feature-card.orange {
  --feature-tint: #fdf1e2;
  --feature-ink: #c07a22;
}

body:not(.app-login-shell) .feature-card.green {
  --feature-tint: #e8f6ee;
  --feature-ink: #238b59;
}

body:not(.app-login-shell) .feature-card .btn {
  background: var(--feature-ink, var(--blue));
  color: #ffffff;
}


body:not(.app-login-shell) .btn {
  min-height: 42px;
  border-radius: 11px;
  padding: 0 20px;
  font-weight: 650;
  transition: filter 160ms ease, transform 160ms ease, background 160ms ease, color 160ms ease;
}

body:not(.app-login-shell) .btn:hover:not(:disabled) {
  filter: brightness(1.03);
  transform: translateY(-1px);
}

body:not(.app-login-shell) .practice-list-row {
  min-height: 72px;
  padding: 13px 20px;
  border-bottom: 1px solid #eef1f6;
  transition: background 160ms ease;
}

body:not(.app-login-shell) .practice-list-row:hover {
  transform: none;
  background: #f7faff;
}

body:not(.app-login-shell) .practice-subject-main strong {
  color: var(--text);
  font-weight: 700;
}

body:not(.app-login-shell) input:focus,
body:not(.app-login-shell) select:focus,
body:not(.app-login-shell) textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(47, 116, 200, 0.12);
  outline: none;
}

/* 课程正文：表格与分区更像阅读器，减少"框套框"的模板感 */
body:not(.app-login-shell) .section-block {
  margin-bottom: 22px;
}

body:not(.app-login-shell) .course-table,
body:not(.app-login-shell) table.course-table {
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

body:not(.app-login-shell) .course-table th {
  background: #f7f9fc;
  color: var(--muted);
  font-weight: 650;
}

body:not(.app-login-shell) .course-table td,
body:not(.app-login-shell) .course-table th {
  border-color: #eef1f6;
  padding: 12px 14px;
  line-height: 1.75;
}

/* =============================== APP 端 ============================== */

html.app-login-shell,
html.app-login-shell body {
  background: var(--canvas);
  color: var(--ink);
}

/* APP 首页快捷入口：与桌面端统一的圆角与更轻的投影 */
html:not(.app-login-shell) .quick-action {
  border-radius: 16px;
  box-shadow: var(--shadow);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

html:not(.app-login-shell) .quick-action:active {
  transform: scale(0.985);
}

html:not(.app-login-shell) .quick-action strong {
  color: var(--ink);
  font-weight: 700;
}

/* APP 顶部栏与底部导航：用更淡的层次，避免大面积高饱和蓝 */
html:not(.app-login-shell) .app-topbar {
  border-bottom: 1px solid var(--line);
  box-shadow: none;
}

html:not(.app-login-shell) .app-tab.active {
  color: var(--brand-deep);
}