/* ========== 枫灵AI - 前端公共样式 ========== */

:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #a5b4fc;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text-main: #1e293b;
  --text-sub: #64748b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --radius: 12px;
}

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

html, body {
  min-height: 100vh;
  width: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

body > * {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.site-footer {
  margin-top: auto;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--primary-dark);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 头部导航 */
.site-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-size: 0;
  color: transparent;
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-logo img {
  height: 36px;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-links a {
  color: var(--text-sub);
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--primary);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 12px;
}

.credits-display {
  color: #1e293b;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

/* 用户头像和名称 */
.user-avatar-link {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 8px;
  transition: background 0.2s;
}
.user-avatar-link:hover {
  background: #f1f5f9;
}
.user-avatar-img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid #e2e8f0;
}
.user-name {
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: white;
}

.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

.btn-ghost {
  background: transparent;
  color: var(--text-sub);
}

.btn-ghost:hover {
  background: var(--bg);
}

/* 轮播图 */
.carousel-section {
  padding: 20px 0 8px;
}

.carousel-container {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 6;
  background: var(--card-bg);
}

.carousel-slides {
  display: flex;
  transition: transform 0.5s ease;
  height: 100%;
}

.carousel-slide {
  min-width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card-bg);
}

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

.carousel-nav {
  position: absolute;
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 5px;
}

.carousel-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all 0.3s;
  border: none;
}

.carousel-dot.active {
  background: white;
  width: 14px;
  border-radius: 3px;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.3);
  color: white;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  transition: background 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-btn:hover {
  background: rgba(0, 0, 0, 0.5);
}

.carousel-prev {
  left: 15px;
}

.carousel-next {
  right: 15px;
}

/* 应用网格 */
.apps-section {
  padding: 16px 0;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-main);
  text-align: center;
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.app-card {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
  text-decoration: none;
}

.app-card:hover {
  transform: translateY(-4px);
}

.app-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--bg);
  border-radius: var(--radius);
}

@media (max-width: 768px) {
  .app-cover {
    aspect-ratio: 16 / 9;
    border-radius: 10px;
  }
}

.app-name {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-sub);
  text-align: center;
  margin-top: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-desc {
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.app-credits {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
}

/* 表单样式 */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  transition: border-color 0.2s;
  background: var(--card-bg);
  color: var(--text-main);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.checkbox-group input[type="checkbox"] {
  margin-top: 3px;
}

/* 分页区域 */
.auth-page {
  min-height: calc(100vh - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.auth-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.auth-card h2 {
  font-size: 22px;
  margin-bottom: 8px;
  color: var(--text-main);
}

.auth-card .subtitle {
  color: var(--text-sub);
  margin-bottom: 24px;
  font-size: 14px;
}

.auth-footer {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-sub);
}

/* 页脚 */
.site-footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  color: var(--text-sub);
  font-size: 13px;
}

/* 消息提示 */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 14px;
}

.alert-success {
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.alert-danger {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-warning {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fed7aa;
}

.alert-info {
  background: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .apps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .nav-links {
    display: none;
  }

  .auth-card {
    padding: 24px;
  }

  .carousel-container {
    aspect-ratio: 16 / 9;
  }

  .section-title {
    font-size: 20px;
  }

  .header-inner {
    flex-wrap: wrap;
    gap: 10px;
  }
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-sub);
}

.empty-state svg {
  width: 80px;
  height: 80px;
  margin-bottom: 16px;
  opacity: 0.4;
}