/* ========================================
   乐陵一中2024级39班 - 青春纪念册 样式表
   风格：青春校园风
   ======================================== */

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

:root {
  --blue: #4A90D9;
  --blue-dark: #357ABD;
  --blue-light: #E8F1FB;
  --coral: #FF7B7B;
  --coral-light: #FFF0F0;
  --green: #5CB85C;
  --green-light: #EDF7ED;
  --yellow: #F5A623;
  --yellow-light: #FFF8ED;
  --purple: #9B59B6;
  --purple-light: #F5EDF8;
  --text: #333333;
  --text-light: #666666;
  --text-muted: #999999;
  --bg: #F8F9FB;
  --bg-alt: #EEF2F7;
  --white: #FFFFFF;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 6px 24px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 1px 8px rgba(0,0,0,0.06);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--blue);
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 4px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text);
  font-size: 14px;
  padding: 6px 14px;
  border-radius: 20px;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-links a:hover {
  background: var(--blue-light);
  color: var(--blue);
}

.nav-links a.active {
  background: var(--blue);
  color: white;
  font-weight: 600;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text);
  cursor: pointer;
  padding: 4px 8px;
}

/* ---------- Hero 首页 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, #667eea 0%, #4A90D9 30%, #5CB85C 70%, #F5A623 100%);
  background-size: 400% 400%;
  animation: gradientShift 12s ease infinite;
  color: var(--white);
  padding: 100px 20px 60px;
}

.hero.has-image {
  background-size: cover;
  background-position: center;
  animation: none;
}

.hero.has-image .hero-overlay {
  background: rgba(0,0,0,0.35);
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 5 L35 25 L55 30 L35 35 L30 55 L25 35 L5 30 L25 25 Z' fill='rgba(255,255,255,0.06)'/%3E%3C/svg%3E") repeat;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 14px;
  margin-bottom: 20px;
  backdrop-filter: blur(5px);
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: 4px;
  margin-bottom: 12px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.hero-subtitle {
  font-size: 20px;
  opacity: 0.9;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.hero-desc {
  font-size: 15px;
  opacity: 0.8;
  margin-bottom: 36px;
  line-height: 1.8;
}

/* 高考倒计时 */
.countdown-box {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  background: rgba(255,255,255,0.18);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 20px;
  padding: 24px 40px;
  gap: 6px;
  transition: transform 0.3s ease;
}

.countdown-box:hover {
  transform: translateY(-2px);
}

.countdown-icon {
  font-size: 32px;
}

.countdown-number {
  font-size: 48px;
  font-weight: 800;
  color: #FFF;
  text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.countdown-label {
  font-size: 16px;
  opacity: 0.85;
}

.countdown-date {
  font-size: 13px;
  opacity: 0.7;
  margin-top: 2px;
}

/* 向下滚动提示 */
.hero-scroll-hint {
  position: absolute;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

.scroll-arrow {
  font-size: 18px;
}

/* ---------- 通用 Section ---------- */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  text-align: center;
  color: var(--text);
  margin-bottom: 8px;
}

.section-desc {
  text-align: center;
  color: var(--text-light);
  font-size: 15px;
  margin-bottom: 48px;
}

/* ---------- 公告通知栏 ---------- */
.notices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.notice-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--blue);
  transition: var(--transition);
  position: relative;
}

.notice-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.notice-important {
  border-left-color: var(--coral);
  background: var(--coral-light);
}

.notice-card h3 {
  font-size: 16px;
  margin: 10px 0 8px;
  color: var(--text);
}

.notice-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

.notice-tag {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--coral);
  color: white;
  font-weight: 600;
}

.notice-tag-info {
  background: var(--blue);
}

.notice-date {
  display: block;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ---------- 班级成员 ---------- */
.subsection-title {
  font-size: 20px;
  font-weight: 700;
  text-align: center;
  color: var(--text);
  margin: 40px 0 20px;
}

/* 教师网格 */
.teachers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin-bottom: 8px;
}
.teacher-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--coral);
  transition: var(--transition);
}

.teacher-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.teacher-avatar {
  font-size: 42px;
  flex-shrink: 0;
  background: var(--coral-light);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.teacher-info h3 {
  font-size: 17px;
  margin-bottom: 4px;
}

.teacher-role {
  font-size: 13px;
  color: var(--coral);
  font-weight: 600;
}

.teacher-info p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* 学生网格 */
.members-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 16px;
}

.member-card {
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 20px 10px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: default;
}

.member-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  background: var(--blue-light);
}

.member-avatar {
  font-size: 42px;
  margin-bottom: 10px;
}

.member-name {
  font-size: 14px;
  font-weight: 600;
}

.member-role-tag {
  display: inline-block;
  font-size: 11px;
  color: var(--coral);
  margin-top: 4px;
}

/* ---------- 荣誉墙 ---------- */
.honors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.honor-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.honor-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.honor-icon {
  font-size: 40px;
  flex-shrink: 0;
  width: 70px;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--yellow-light);
}

.honor-card:nth-child(2) .honor-icon { background: var(--coral-light); }
.honor-card:nth-child(3) .honor-icon { background: var(--purple-light); }
.honor-card:nth-child(4) .honor-icon { background: var(--green-light); }
.honor-card:nth-child(5) .honor-icon { background: var(--blue-light); }
.honor-card:nth-child(6) .honor-icon { background: #FFF3E0; }

.honor-card h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.honor-year {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- 班级相册 ---------- */
.gallery-filter {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 20px;
  border: 2px solid var(--blue);
  background: transparent;
  color: var(--blue);
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
  font-family: inherit;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--blue);
  color: white;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.gallery-item:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-hover);
}

.gallery-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: white;
  gap: 8px;
}

.gallery-placeholder span {
  font-size: 13px;
  opacity: 0.9;
}

.gallery-item:nth-child(5n+1) .gallery-placeholder { background: linear-gradient(135deg, #667eea, #764ba2); }
.gallery-item:nth-child(5n+2) .gallery-placeholder { background: linear-gradient(135deg, #f093fb, #f5576c); }
.gallery-item:nth-child(5n+3) .gallery-placeholder { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.gallery-item:nth-child(5n+4) .gallery-placeholder { background: linear-gradient(135deg, #43e97b, #38f9d7); }
.gallery-item:nth-child(5n+5) .gallery-placeholder { background: linear-gradient(135deg, #fa709a, #fee140); }

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 10px;
  background: linear-gradient(transparent, rgba(0,0,0,0.6));
  color: white;
  font-size: 13px;
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover .gallery-caption {
  opacity: 1;
}

.gallery-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-del-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(220, 53, 69, 0.9);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 28px;
  text-align: center;
  opacity: 0;
  transition: var(--transition);
  z-index: 2;
}

.gallery-item:hover .gallery-del-btn {
  opacity: 1;
}

/* ---------- 留言板 ---------- */
.msg-type-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.msg-type-btn {
  padding: 8px 18px;
  border: 2px solid #ddd;
  background: white;
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  transition: var(--transition);
  font-family: inherit;
}

.msg-type-btn.active {
  border-color: var(--blue);
  background: var(--blue-light);
  color: var(--blue);
  font-weight: 600;
}

.msg-type-tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  margin-right: 8px;
  font-weight: 600;
}

.msg-type-real { background: var(--blue-light); color: var(--blue); }
.msg-type-nick { background: var(--green-light); color: var(--green); }
.msg-type-anon { background: #f0f0f0; color: #999; }

.real-name-select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e8e8e8;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  background: white;
  outline: none;
  transition: var(--transition);
}

.real-name-select:focus {
  border-color: var(--blue);
}

.message-form input,
.message-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e8e8e8;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
}

.message-form input:focus,
.message-form textarea:focus {
  border-color: var(--blue);
}

.message-form textarea {
  resize: vertical;
  min-height: 90px;
}

.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
}

.char-count {
  font-size: 13px;
  color: var(--text-muted);
}

.btn-submit {
  padding: 10px 28px;
  background: var(--blue);
  color: white;
  border: none;
  border-radius: 20px;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-submit:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
}

/* 留言列表 */
.messages-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.message-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--green);
  transition: var(--transition);
}

.message-item:hover {
  transform: translateX(3px);
}

.message-item:nth-child(odd) {
  border-left-color: var(--blue);
}

.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.message-author {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

.message-time {
  font-size: 12px;
  color: var(--text-muted);
}

.message-title {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 6px;
}

.message-body {
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
}

.message-delete {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 12px;
  padding: 2px 6px;
  transition: var(--transition);
}

.message-delete:hover {
  color: var(--coral);
}

/* ---------- 页脚 ---------- */
.footer {
  background: #2C3E50;
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 36px 0;
}

.footer-text {
  font-size: 16px;
  font-weight: 600;
  color: white;
  margin-bottom: 4px;
}

.footer-sub {
  font-size: 13px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
  .hero-title {
    font-size: 30px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-desc {
    font-size: 13px;
  }

  .countdown-number {
    font-size: 36px;
  }

  .countdown-box {
    padding: 18px 28px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 12px 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  }

  .nav-links.show {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .teacher-card {
    flex-direction: column;
    text-align: center;
  }

  .teachers-grid {
    grid-template-columns: 1fr;
  }

  .members-grid {
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 10px;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  .honors-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .notices-grid {
    grid-template-columns: 1fr;
  }

  .msg-type-selector {
    flex-direction: column;
  }

  .msg-type-btn {
    text-align: center;
  }
}