/* URLfy - 简洁现代的设计系统 */

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #16a34a;
  --error: #dc2626;
  --text: #1f2937;
  --text-light: #6b7280;
  --border: #e5e7eb;
  --bg-light: #f9fafb;
  --white: #ffffff;
}

/* 基础样式 */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--text);
  margin: 0;
  background: var(--bg-light);
}

/* 容器 */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 头部 */
.brand-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 25px 0;
  text-align: center;
}

.brand-logo h1 {
  font-size: 2rem;
  font-weight: 700;
  margin: 0;
  color: var(--primary);
}

.brand-slogan {
  display: block;
  font-size: 0.95rem;
  color: var(--text-light);
  margin-top: 4px;
}

.brand-tagline {
  margin-top: 8px;
}

.brand-tagline p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-light);
  opacity: 0.8;
}

/* 主要内容 */
main {
  padding: 40px 0;
  min-height: calc(100vh - 300px);
}

/* 底部 */
.enterprise-footer {
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: 40px 0 20px;
  margin-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  margin-bottom: 30px;
}

.footer-logo h3 {
  font-size: 1.5rem;
  margin: 0;
  color: var(--primary);
}

.footer-slogan {
  color: var(--text-light);
  margin: 5px 0 0 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 30px;
}

.footer-section h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 15px 0;
  color: var(--text);
}

.footer-section nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-section nav a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.9rem;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  text-align: center;
  color: var(--text-light);
  font-size: 0.9rem;
}

/* 卡片 */
.card {
  background: var(--white);
  border-radius: 8px;
  padding: 30px;
  border: 1px solid var(--border);
  margin-bottom: 20px;
}

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

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
}

.form-input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 44px;
}

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

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

.btn-secondary {
  background: var(--text-light);
  color: var(--white);
}

.btn-secondary:hover {
  background: var(--text);
}

/* 消息 */
.message {
  padding: 12px 16px;
  border-radius: 6px;
  margin: 15px 0;
  font-weight: 500;
}

.message.success {
  background: rgba(22, 163, 74, 0.1);
  color: var(--success);
  border: 1px solid rgba(22, 163, 74, 0.2);
}

.message.error {
  background: rgba(220, 38, 38, 0.1);
  color: var(--error);
  border: 1px solid rgba(220, 38, 38, 0.2);
}

.message.info {
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

/* 排版 */
h1 { font-size: 2.5rem; font-weight: 700; margin: 0 0 20px 0; }
h2 { font-size: 2rem; font-weight: 600; margin: 0 0 15px 0; }
h3 { font-size: 1.5rem; font-weight: 600; margin: 0 0 12px 0; }
h4 { font-size: 1.2rem; font-weight: 600; margin: 0 0 10px 0; }

p {
  margin: 0 0 15px 0;
  line-height: 1.6;
}

/* 工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }

.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }

/* 网格 */
.grid {
  display: grid;
  gap: 20px;
}

.grid-cols-1 { grid-template-columns: 1fr; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

/* 响应式 */
@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }

  .brand-logo h1 {
    font-size: 2rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .grid-cols-2,
  .grid-cols-3 {
    grid-template-columns: 1fr;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .card {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .brand-header {
    padding: 30px 0;
  }

  main {
    padding: 30px 0;
  }

  .card {
    padding: 15px;
  }
}

/* 首页专用样式 */
.hero-section {
  text-align: center;
  padding: 30px 0;
}

.hero-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}

.hero-description {
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 25px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.url-shortener-card {
  max-width: 600px;
  margin: 0 auto 30px;
}

.url-form {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  align-items: stretch;
}

.url-form input {
  flex: 2;
  min-width: 0;
  height: 44px;
  font-size: 1rem;
}

.url-form button {
  flex: 0.8;
  min-width: 120px;
  white-space: nowrap;
  font-size: 0.95rem;
  padding: 12px 20px;
}

.short-url-result {
  text-align: center;
  padding: 20px;
  background: var(--bg-light);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.result-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--success);
}

.short-url-display {
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 1.1rem;
  background: var(--white);
  padding: 15px;
  border-radius: 6px;
  border: 1px solid var(--border);
  word-break: break-all;
  margin: 15px 0;
  color: var(--primary);
  font-weight: 500;
}

.result-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 特性区域 */
.features-section {
  padding: 30px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.feature-card {
  text-align: center;
  padding: 20px;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--text);
}

.feature-description {
  color: var(--text-light);
  line-height: 1.6;
}

/* 统计区域 */
.stats-section {
  background: var(--white);
  padding: 30px 0;
  border-radius: 12px;
  margin: 15px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 25px;
  margin-top: 25px;
}

.stat-card {
  text-align: center;
  padding: 25px;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-label {
  color: var(--text-light);
  font-weight: 500;
}

/* API文档页面 */
.api-hero-section,
.contact-hero-section,
.report-hero-section,
.legal-hero-section {
  text-align: center;
  padding: 60px 0;
  background: var(--white);
  border-radius: 12px;
  margin-bottom: 40px;
}

.api-title,
.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text);
}

.page-subtitle {
  color: var(--text-light);
  margin: 0;
  font-size: 1.1rem;
}

.endpoint-card {
  margin-bottom: 25px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.endpoint-header {
  background: var(--primary);
  color: var(--white);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
}

.endpoint-method {
  background: rgba(255, 255, 255, 0.2);
  padding: 5px 10px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.9rem;
}

.endpoint-path {
  font-family: 'Monaco', 'Courier New', monospace;
  font-weight: 600;
  font-size: 1.1rem;
}

.endpoint-description {
  flex: 1;
  font-size: 1rem;
}

/* 响应式优化 */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.2rem;
  }

  .hero-description {
    font-size: 1.1rem;
  }

  .url-form {
    flex-direction: column;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .endpoint-header {
    flex-direction: column;
    text-align: center;
    gap: 10px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.8rem;
  }

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

  .result-actions {
    flex-direction: column;
  }

  .result-actions .btn {
    width: 100%;
  }
}