* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #f5f6fa;
  --bg2: #ffffff;
  --card: rgba(255, 255, 255, 0.75);
  --card-hover: rgba(255, 255, 255, 0.95);
  --border: rgba(0, 0, 0, 0.08);
  --text: #1a1a2e;
  --text2: #6b7280;
  --text3: #9ca3af;
  --primary: #8b5cf6;
  --pink: #ec4899;
  --blue: #3b82f6;
  --gradient: linear-gradient(135deg, #8b5cf6, #ec4899);
  --gradient2: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --radius: 16px;
}


html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* 流体背景 */
#fluidCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* 顶部导航 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(15, 10, 30, 0.7);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-icon {
  font-size: 22px;
  -webkit-text-fill-color: initial;
}

.nav-links {
  display: flex;
  gap: 20px;
}

.nav-link {
  color: var(--text2);
  font-size: 14px;
  cursor: pointer;
  transition: color 0.2s;
  text-decoration: none;
}

.nav-link:hover {
  color: var(--text);
}

/* 容器 */
.container {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* 视图切换 */
.view {
  display: none;
  animation: fadeUp 0.4s ease;
}

.view.active {
  display: block;
}

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

/* Hero */
.hero {
  text-align: center;
  padding: 60px 0 40px;
}

.hero-title {
  font-size: 42px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.hero-sub {
  color: var(--text2);
  font-size: 16px;
}

/* 搜索框 */
.search-box {
  position: relative;
  margin-bottom: 40px;
}

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 16px;
  opacity: 0.5;
}

.search-input {
  width: 100%;
  padding: 16px 50px 16px 48px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: all 0.3s;
  backdrop-filter: blur(10px);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.search-input::placeholder {
  color: var(--text3);
}

.search-clear {
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: var(--text3);
  font-size: 14px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.2s;
}

.search-clear:hover {
  background: var(--card-hover);
  color: var(--text);
}

/* 搜索结果 */
.search-results {
  margin-bottom: 40px;
}

.result-count {
  color: var(--text2);
  font-size: 14px;
  margin-bottom: 16px;
}

/* 分区 */
.section {
  margin-bottom: 40px;
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

/* 卡片网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 14px;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s;
}

.card:hover {
  background: var(--card-hover);
  border-color: rgba(139, 92, 246, 0.3);
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(139, 92, 246, 0.15);
}

.card:hover::before {
  opacity: 1;
}

.card-icon {
  font-size: 32px;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-hover);
  border-radius: 12px;
}

.card-info {
  flex: 1;
  min-width: 0;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.card-desc {
  font-size: 13px;
  color: var(--text2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-arrow {
  color: var(--text3);
  font-size: 18px;
  flex-shrink: 0;
  transition: transform 0.3s;
}

.card:hover .card-arrow {
  transform: translateX(4px);
  color: var(--primary);
}

/* 网站列表 */
.site-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.site-item {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  transition: all 0.3s;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
  animation: fadeUp 0.4s ease both;
}

.site-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s;
}

.site-item:hover {
  background: var(--card-hover);
  border-color: rgba(139, 92, 246, 0.3);
  transform: translateX(4px);
}

.site-item:hover::before {
  opacity: 1;
}

.fav-star {
  font-size: 20px;
  color: var(--text3);
  cursor: pointer;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all 0.2s;
  user-select: none;
}

.fav-star:hover {
  background: var(--card-hover);
  transform: scale(1.15);
}

.fav-star.active {
  color: #fbbf24;
  animation: pop 0.3s ease;
}

@keyframes pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

.site-info {
  flex: 1;
  min-width: 0;
}

.site-name {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 3px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sys-tag {
  font-size: 11px;
  padding: 2px 8px;
  background: rgba(139, 92, 246, 0.15);
  color: var(--primary);
  border-radius: 10px;
  font-weight: 500;
}

.site-desc {
  font-size: 13px;
  color: var(--text2);
  margin-bottom: 3px;
}

.site-url {
  font-size: 12px;
  color: var(--text3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-btn {
  flex-shrink: 0;
  padding: 8px 16px;
  background: var(--card-hover);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text2);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.3s;
  white-space: nowrap;
}

.site-item:hover .copy-btn {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  padding: 10px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text2);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  white-space: nowrap;
}

.tab:hover {
  background: var(--card-hover);
  color: var(--text);
}

.tab.active {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
}

/* 页面头部 */
.page-header {
  padding: 30px 0 20px;
  margin-bottom: 10px;
}

.back-btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text2);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  margin-bottom: 16px;
  transition: all 0.2s;
}

.back-btn:hover {
  background: var(--card-hover);
  color: var(--text);
}

.page-title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 6px;
}

.page-sub {
  color: var(--text2);
  font-size: 14px;
}

/* Portal 分区 */
.portal-region {
  margin-bottom: 30px;
}

.portal-region-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  padding-left: 10px;
  border-left: 3px solid var(--primary);
}

/* GPA */
.gpa-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.gpa-subject-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  animation: fadeUp 0.3s ease both;
}

.gpa-input {
  flex: 1;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.gpa-input:focus {
  border-color: var(--primary);
}

.gpa-select {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  cursor: pointer;
  min-width: 100px;
}

.gpa-del {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--text3);
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.gpa-del:hover {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.gpa-add-btn {
  display: block;
  width: 100%;
  padding: 14px;
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: 12px;
  color: var(--text2);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 24px;
}

.gpa-add-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(139, 92, 246, 0.05);
}

.gpa-result-card {
  background: var(--gradient);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  margin-bottom: 24px;
}

.gpa-result-label {
  font-size: 14px;
  opacity: 0.9;
  margin-bottom: 8px;
}

.gpa-result-value {
  font-size: 48px;
  font-weight: 800;
}

.gpa-result-comment {
  margin-top: 10px;
  font-size: 14px;
  opacity: 0.9;
}

.gpa-table {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.gpa-table-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text2);
}

.gpa-table-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.gpa-table-row:last-child {
  border-bottom: none;
}

/* 随机点名 */
.roll-display {
  background: var(--gradient);
  border-radius: var(--radius);
  padding: 60px 20px;
  text-align: center;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}

.roll-display.rolling .roll-display-text {
  animation: shake 0.1s infinite;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-3px); }
  75% { transform: translateX(3px); }
}

.roll-display-text {
  font-size: 56px;
  font-weight: 800;
}

.roll-btn {
  display: block;
  width: 100%;
  padding: 16px;
  background: var(--gradient);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 12px;
  transition: all 0.2s;
}

.roll-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
}

.roll-btn.secondary {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text2);
}

.roll-btn.secondary:hover {
  background: var(--card-hover);
  color: var(--text);
  box-shadow: none;
}

.roll-picked-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}

.roll-picked-tag {
  padding: 6px 14px;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border-radius: 20px;
  font-size: 13px;
}

.roll-textarea {
  width: 100%;
  min-height: 150px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  resize: vertical;
  margin-bottom: 12px;
  font-family: inherit;
  line-height: 1.8;
}

.roll-textarea:focus {
  border-color: var(--primary);
}

.roll-range-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.roll-range-input {
  flex: 1;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  color: var(--text);
  font-size: 18px;
  text-align: center;
  outline: none;
}

.roll-range-input:focus {
  border-color: var(--primary);
}

.roll-range-line {
  color: var(--text3);
  font-size: 16px;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 80px 20px;
}

.empty-icon {
  font-size: 64px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-text {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.empty-sub {
  color: var(--text2);
  font-size: 14px;
}

/* 关于页 */
.about-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 16px;
  text-align: center;
  backdrop-filter: blur(10px);
}

.about-logo {
  font-size: 56px;
  margin-bottom: 12px;
}

.about-name {
  font-size: 24px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.about-version {
  color: var(--text3);
  font-size: 13px;
}

.about-card-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
  text-align: left;
}

.about-card-text {
  color: var(--text2);
  font-size: 14px;
  line-height: 1.8;
  text-align: left;
}

/* 弹窗 */
.modal-mask {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  max-width: 480px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  animation: modalUp 0.4s ease;
}

@keyframes modalUp {
  from { opacity: 0; transform: translateY(30px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-icon {
  font-size: 48px;
  text-align: center;
  margin-bottom: 16px;
}

.modal-title {
  font-size: 24px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 20px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal-content {
  color: var(--text2);
  font-size: 14px;
  line-height: 1.9;
  margin-bottom: 24px;
}

.modal-content p {
  margin-bottom: 12px;
}

.modal-content p:last-child {
  margin-bottom: 0;
}

.modal-btn {
  display: block;
  width: 100%;
  padding: 14px;
  background: var(--gradient);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.modal-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(30, 20, 50, 0.95);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 14px;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* 页脚 */
.footer {
  text-align: center;
  padding: 40px 0 20px;
  color: var(--text3);
  font-size: 13px;
}

/* 响应式 */
@media (max-width: 640px) {
  .hero-title {
    font-size: 32px;
  }
  .hero {
    padding: 40px 0 30px;
  }
  .card-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    gap: 14px;
  }
  .nav-link {
    font-size: 13px;
  }
  .page-title {
    font-size: 22px;
  }
  .roll-display-text {
    font-size: 40px;
  }
  .gpa-result-value {
    font-size: 36px;
  }
  .modal {
    padding: 24px;
  }
  .site-item {
    padding: 14px;
  }
  .copy-btn {
    padding: 6px 12px;
    font-size: 12px;
  }
}