/* ========================================
   style.css — jeepsh.cn 红金皇家风格
   参照实站：深红渐变头 + 金标 + 米白内容区
   ======================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 20px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background-color: var(--main-bg);
  line-height: 1.85;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  animation: inkSpread 0.8s ease-out;
}

@keyframes inkSpread {
  from { opacity: 0; filter: blur(4px); }
  to   { opacity: 1; filter: blur(0); }
}

/* ========================================
   顶部 Header — 深红渐变 + 金色文字
   ======================================== */
.site-header {
  text-align: center;
  padding: 3.2rem 1rem 2rem;
  background: var(--header-bg);
  color: var(--header-text);
  position: relative;
}

.site-title {
  font-family: var(--font-accent);
  font-size: 3.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
  color: inherit;
}

.page-subtitle {
  font-family: var(--font-accent);
  font-size: 1.35rem;
  color: var(--header-text);
  opacity: 0.85;
  margin-bottom: 0.3rem;
  font-weight: 500;
}

/* ---- 时辰 ---- */
.shichen {
  font-family: var(--font-accent);
  font-size: 1.05rem;
  color: var(--header-text);
  opacity: 0.5;
  letter-spacing: 0.1em;
}

/* ========================================
   导航栏 — 红底 + 金色文字
   ======================================== */
.site-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  background: var(--nav-bg);
  padding: 0.9rem 1rem;
  border-bottom: 3px solid var(--gold);
}

.site-nav a {
  display: inline-block;
  font-family: var(--font-title);
  font-size: 1.3rem;
  color: var(--nav-text);
  text-decoration: none;
  padding: 0.5rem 1.3rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  letter-spacing: 0.06em;
}

.site-nav a:hover,
.site-nav a.active {
  background: var(--nav-hover-bg);
  color: var(--nav-hover-text);
  box-shadow: inset 0 -2px 0 var(--green-mid);
}

.nav-sep {
  color: var(--nav-text);
  opacity: 0.4;
  font-size: 1.1rem;
  user-select: none;
}

.nav-break {
  flex-basis: 100%;
  height: 0;
}

/* ========================================
   面包屑
   ======================================== */
.breadcrumb {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1rem 1.5rem 0;
  font-size: 1rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--link-color);
  text-decoration: none;
}

.breadcrumb a:hover { color: var(--gold); }

/* ========================================
   主内容区
   ======================================== */
.main-content {
  flex: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  width: 100%;
}

/* ========================================
   首页卡片区
   ======================================== */
.home-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

	.home-grid.row-3 {
  grid-template-columns: repeat(3, 1fr);
  justify-content: center;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 900px) {
  .home-grid, .home-grid.row-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .home-grid, .home-grid.row-3 {
    grid-template-columns: 1fr;
  }
}

/* ---- 卷轴卡片 ---- */
.home-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(180deg, var(--card-bg) 0%, var(--section-alt) 100%);
  border: 1px solid var(--card-border);
  border-bottom: 3px solid var(--gold-pale);
  border-radius: var(--radius-md);
  padding: 2rem 1rem;
  text-decoration: none;
  color: var(--text-dark);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-sm);
  animation: cardIn 0.6s ease-out both;
}

.home-card:nth-child(1) { animation-delay: 0.05s; }
.home-card:nth-child(2) { animation-delay: 0.1s; }
.home-card:nth-child(3) { animation-delay: 0.15s; }
.home-card:nth-child(4) { animation-delay: 0.2s; }
.home-card:nth-child(5) { animation-delay: 0.25s; }
.home-card:nth-child(6) { animation-delay: 0.3s; }
.home-card:nth-child(7) { animation-delay: 0.35s; }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.home-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---- 卷轴轴杆 (上下装饰条) ---- */
.home-card::before,
.home-card::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--gold-pale), var(--gold), var(--gold-pale));
  border-radius: 3px;
}

.home-card::before { top: -3px; }
.home-card::after  { bottom: -3px; }

.home-card.card-blue::before,
.home-card.card-blue::after { background: linear-gradient(90deg, #D0DDE8, #7A9BB5, #D0DDE8); }
.home-card.card-purple::before,
.home-card.card-purple::after { background: linear-gradient(90deg, #D0C8E0, #8A7AB0, #D0C8E0); }
.home-card.card-green::before,
.home-card.card-green::after { background: linear-gradient(90deg, #CDE0C8, #7AAA5B, #CDE0C8); }
.home-card.card-gold::before,
.home-card.card-gold::after { background: linear-gradient(90deg, #F5E6C0, #C8960A, #F5E6C0); }

/* ---- 卡片图标 ---- */
.card-icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--gold-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.6rem;
  margin-bottom: 0.8rem;
  transition: transform var(--transition), background var(--transition);
  box-shadow: 0 0 0 3px var(--green-pale);
}

.home-card:hover .card-icon-wrap {
  transform: scale(1.1);
  background: var(--gold-light);
}

.card-title {
  font-family: var(--font-title);
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--red-deep);
  margin-bottom: 0.2rem;
  letter-spacing: 0.05em;
}

.card-sub {
  font-family: var(--font-accent);
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* ========================================
   年级内容页 区块
   ======================================== */
.section-block {
  background: linear-gradient(180deg, var(--section-bg) 0%, var(--section-alt) 80%);
  border: 1px solid var(--card-border);
  border-bottom: 3px solid var(--gold-pale);
  border-radius: var(--radius-md);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  animation: fadeUp 0.6s ease-out both;
  position: relative;
}

/* 区块顶部金色装饰线 */
.section-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0.5;
}

.section-block:nth-child(odd)  { background: var(--section-bg); }
.section-block:nth-child(even) { background: var(--section-alt); }
.section-block:nth-child(even)::before {
  background: linear-gradient(90deg, transparent, var(--green-mid), transparent);
}
.section-block:nth-child(1) { animation-delay: 0.1s; }
.section-block:nth-child(2) { animation-delay: 0.2s; }
.section-block:nth-child(3) { animation-delay: 0.3s; }
.section-block:nth-child(4) { animation-delay: 0.4s; }
.section-block:nth-child(5) { animation-delay: 0.5s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- 区块标题 ---- */
.section-title {
  font-family: var(--font-accent);
  font-size: 2.1rem;
  color: var(--red-deep);
  font-weight: 600;
  margin-bottom: 0.3rem;
  padding-left: 0.8rem;
  border-left: 5px solid var(--gold);
  letter-spacing: 0.08em;
  position: relative;
}

/* 标题后方绿色小菱形标记 */
.section-title::after {
  content: '◆';
  color: var(--green-mid);
  font-size: 0.6rem;
  vertical-align: middle;
  margin-left: 0.5rem;
  opacity: 0.6;
}

.section-subtitle {
  font-family: var(--font-accent);
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  padding-left: 1.2rem;
}

/* ---- 栏目网格 ---- */
.column-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: flex-start;
}

.column-item {
  flex: 1 1 195px;
  max-width: 220px;
  background: linear-gradient(180deg, var(--card-bg) 0%, var(--section-alt) 100%);
  border: 1px solid var(--card-border);
  border-bottom: 3px solid transparent;
  border-radius: var(--radius-md);
  padding: 1.5rem 0.8rem;
  text-align: center;
  text-decoration: none;
  color: var(--text-dark);
  white-space: nowrap;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  font-family: var(--font-title);
  font-size: 1.2rem;
  cursor: pointer;
}

.column-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold);
  border-bottom-color: var(--gold);
}

.column-item .col-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  display: block;
}

.column-item .col-label {
  display: block;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* ---- 栏目顶边色类（加入黄色和绿色） ---- */
.col-exam   { border-top: 4px solid var(--red-deep); }
.col-course { border-top: 4px solid var(--gold); }
.col-test   { border-top: 4px solid #7A4A1A; }
.col-score  { border-top: 4px solid var(--green-deep); }
.col-review { border-top: 4px solid #5A7A8A; }

/* ---- 占位文本 ---- */
.placeholder {
  color: var(--text-muted);
  font-size: 1.15rem;
  font-family: var(--font-accent);
  border: 1px dashed var(--card-border);
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin: 0.5rem 0;
}

/* ========================================
   中外通史复习 双列网格（高三专用）
   ======================================== */
.tongshi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.tongshi-col {
  background: linear-gradient(180deg, var(--card-bg) 0%, var(--section-alt) 100%);
  border: 1px solid var(--card-border);
  border-bottom: 3px solid var(--gold-pale);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tongshi-col:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold);
}

.tongshi-label {
  font-family: var(--font-title);
  font-size: 1.45rem;
  font-weight: 500;
  color: var(--red-deep);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--gold-pale);
}

.tongshi-item {
  display: block;
  text-align: center;
  text-decoration: none;
  font-family: var(--font-title);
  font-size: 1.15rem;
  color: var(--text-dark);
  background: linear-gradient(180deg, var(--card-bg) 0%, var(--section-alt) 100%);
  border: 1px solid var(--card-border);
  border-bottom: 2px solid var(--gold-pale);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  margin-bottom: 0.6rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.tongshi-item:last-child { margin-bottom: 0; }

.tongshi-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold);
  border-bottom-color: var(--gold);
}

@media (max-width: 600px) {
  .tongshi-grid { grid-template-columns: 1fr; }
}

/* ========================================
   紧凑卡片（高三用）
   ======================================== */
.compact-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
}

.compact-list.two-col {
  grid-template-columns: repeat(2, 1fr);
}

.compact-card {
  background: linear-gradient(180deg, var(--card-bg) 0%, var(--section-alt) 100%);
  border: 1px solid var(--card-border);
  border-bottom: 3px solid var(--gold-pale);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.compact-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold);
}

.compact-card-title {
  font-family: var(--font-title);
  font-size: 1.45rem;
  font-weight: 500;
  color: var(--red-deep);
  margin-bottom: 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--gold-pale);
}

.compact-card-body {
  color: var(--text-mid);
  font-size: 1.1rem;
}

/* 紧凑卡片内左右双列排列 */
.compact-card-body.flex-row {
  display: flex;
  gap: 0.8rem;
}

.compact-card-body.flex-row .column-item {
  flex: 1;
  max-width: none;
  min-width: 0;
  padding: 1.2rem 0.6rem;
  font-size: 1.1rem;
}

/* ========================================
   返回链接
   ======================================== */
.back-link {
  display: inline-block;
  font-family: var(--font-accent);
  font-size: 1.2rem;
  color: var(--accent-color);
  text-decoration: none;
  margin-bottom: 1.5rem;
  padding: 0.3rem 0;
  transition: color var(--transition);
  letter-spacing: 0.05em;
}

.back-link:hover { color: var(--green-deep); }

/* ========================================
   页脚 — 深红底 + 金色文字
   ======================================== */
.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 3rem;
  border-top: 3px solid var(--gold);
}

.footer-motto {
  font-family: var(--font-accent);
  font-size: 1.6rem;
  margin-bottom: 1.2rem;
  color: var(--nav-text);
  letter-spacing: 0.15em;
}

.footer-beian {
  font-size: 1rem;
  opacity: 0.75;
  line-height: 2;
}

.footer-beian a {
  color: var(--footer-text);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-beian a:hover { color: var(--nav-text); }

.footer-beian img {
  height: 16px;
  vertical-align: -2px;
  margin-right: 4px;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 768px) {
  html { font-size: 17px; }
  .site-title { font-size: 2.6rem; }
  .site-nav a { font-size: 1.15rem; padding: 0.4rem 0.9rem; }
  .section-title { font-size: 1.7rem; }
  .section-block { padding: 1.2rem; }
  .column-item { flex: 1 1 140px; max-width: 160px; }
  .home-card { padding: 1.5rem 0.8rem; }
  .main-content { padding: 1.2rem 1rem; }
  .card-icon-wrap { width: 58px; height: 58px; font-size: 2rem; }
}

@media (max-width: 480px) {
  html { font-size: 15px; }
  .site-title { font-size: 2.2rem; }
  .site-nav { gap: 0.2rem; }
  .site-nav a { font-size: 1.05rem; padding: 0.35rem 0.6rem; }
  .section-title { font-size: 1.5rem; }
  .compact-list { grid-template-columns: 1fr; }
  .card-icon-wrap { width: 50px; height: 50px; font-size: 1.8rem; }
}

/* ========================================
   高一页面专属 — 卡片强化渲染
   ======================================== */
.theme-blue .column-item {
  border-left: 3px solid transparent;
  border-bottom-width: 4px;
  padding: 1.6rem 0.8rem;
  font-size: 1.25rem;
}

.theme-blue .column-item:hover {
  border-left-color: var(--gold);
  transform: translateY(-5px) scale(1.03);
}

.theme-blue .col-exam   { border-bottom-color: var(--red-deep); }
.theme-blue .col-course { border-bottom-color: var(--gold); }
.theme-blue .col-test   { border-bottom-color: #7A4A1A; }
.theme-blue .col-score  { border-bottom-color: var(--green-deep); }