/* ===== 华为达开发者工具箱 - 全局样式 ===== */

:root {
  --primary: #cf0a2c;
  --primary-dark: #a00822;
  --primary-light: #ff1a3e;
  --accent: #0077cc;
  --accent-light: #e8f4fd;
  --bg: #f5f7fa;
  --card-bg: #ffffff;
  --text: #1a1a2e;
  --text-light: #6b7280;
  --border: #e5e7eb;
  --success: #10b981;
  --warning: #f59e0b;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --font: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --max-width: 1200px;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== 顶部导航 ===== */
.topbar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(207,10,44,0.3);
}

.topbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 60px;
  gap: 24px;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.logo span { font-size: 26px; }

.nav-links {
  display: flex;
  gap: 4px;
  flex: 1;
}

.nav-links a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  padding: 4px;
}

/* ===== Hero Section ===== */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, #8b001a 100%);
  color: #fff;
  padding: 60px 20px;
  text-align: center;
}

.hero h1 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 16px;
}

.hero p {
  font-size: 18px;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 24px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
}

.btn-white {
  background: #fff;
  color: var(--primary);
}
.btn-white:hover { background: #f0f0f0; transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover { border-color: #fff; transform: translateY(-2px); }

/* ===== 主要内容区 ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

main { flex: 1; }

.section {
  padding: 48px 0;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 32px;
}

/* ===== 工具卡片网格 ===== */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.tool-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all 0.3s;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.tool-card .icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.tool-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.tool-card p {
  font-size: 14px;
  color: var(--text-light);
  flex: 1;
}

.tool-card .tag {
  display: inline-block;
  margin-top: 12px;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 500;
  align-self: flex-start;
}

/* ===== 教程卡 ===== */
.tutorial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.tutorial-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s;
  border: 1px solid var(--border);
}

.tutorial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.tutorial-card .body {
  padding: 20px;
}

.tutorial-card .category {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.tutorial-card h3 {
  font-size: 18px;
  margin: 8px 0;
}

.tutorial-card p {
  font-size: 14px;
  color: var(--text-light);
}

.tutorial-card .meta {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 12px;
  display: flex;
  gap: 16px;
}

/* ===== 工具页面通用 ===== */
.tool-page {
  padding: 40px 0;
}

.tool-header {
  margin-bottom: 32px;
}

.tool-header h1 {
  font-size: 28px;
  font-weight: 700;
}

.tool-header p {
  color: var(--text-light);
  margin-top: 8px;
}

.tool-box {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.tool-box label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--text);
}

.tool-box textarea,
.tool-box input,
.tool-box select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  font-family: var(--font);
  transition: border-color 0.2s;
  background: #fafafa;
}

.tool-box textarea {
  min-height: 120px;
  resize: vertical;
}

.tool-box textarea:focus,
.tool-box input:focus,
.tool-box select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(207,10,44,0.1);
}

.tool-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}

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

.btn-secondary {
  background: #f0f0f0;
  color: var(--text);
  padding: 10px 24px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-secondary:hover { background: #e0e0e0; }

.result-box {
  margin-top: 16px;
  padding: 16px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  min-height: 48px;
  font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
  font-size: 14px;
  word-break: break-all;
}

.copy-btn {
  margin-top: 8px;
  padding: 6px 16px;
  font-size: 13px;
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.copy-btn:hover { background: var(--accent); color: #fff; }

/* ===== 教程文章页 ===== */
.article-content {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  max-width: 800px;
  margin: 0 auto;
}

.article-content h2 {
  margin: 32px 0 16px;
  font-size: 24px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary);
}

.article-content h3 {
  margin: 24px 0 12px;
  font-size: 20px;
}

.article-content p {
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.8;
}

.article-content ul,
.article-content ol {
  margin: 0 0 16px 24px;
}

.article-content li { margin-bottom: 8px; }

.article-content code {
  background: #f0f0f0;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 14px;
  font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
}

.article-content pre {
  background: #1e1e2e;
  color: #cdd6f4;
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin-bottom: 16px;
  font-size: 14px;
}

.article-content pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  font-size: inherit;
  border-radius: 0;
}

/* ===== 页脚 ===== */
.footer {
  background: #1a1a2e;
  color: rgba(255,255,255,0.7);
  padding: 32px 20px;
  margin-top: 48px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer a { color: rgba(255,255,255,0.7); text-decoration: none; }
.footer a:hover { color: #fff; }

.footer-copy {
  text-align: center;
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 13px;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .hamburger { display: block; }

  .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--primary-dark);
    flex-direction: column;
    padding: 12px;
    gap: 4px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  }

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

  .nav-links a { padding: 12px 16px; }

  .hero h1 { font-size: 28px; }
  .hero p { font-size: 16px; }

  .tool-grid,
  .tutorial-grid { grid-template-columns: 1fr; }

  .tool-box { padding: 20px; }
  .article-content { padding: 24px; }
}

/* ===== 特性区 ===== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.feature-item {
  text-align: center;
  padding: 24px;
}

.feature-item .icon { font-size: 40px; margin-bottom: 12px; }
.feature-item h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.feature-item p { font-size: 14px; color: var(--text-light); }

/* ===== 首页工具区标题 ===== */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.section-header a {
  color: var(--accent);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}

.section-header a:hover { text-decoration: underline; }

/* ===== 版本兼容表 ===== */
.version-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}

.version-table th,
.version-table td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.version-table th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}

.version-table tr:nth-child(even) { background: #f8fafc; }

/* ===== 通知横幅 ===== */
.notice {
  background: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: 8px;
  padding: 12px 20px;
  margin-bottom: 20px;
  font-size: 14px;
  color: #856404;
}

/* ===== 语言切换器 ===== */
.lang-switch {
  display: flex;
  gap: 2px;
  margin-left: auto;
  background: rgba(255,255,255,0.15);
  border-radius: 8px;
  padding: 2px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.lang-btn:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.lang-btn.active {
  background: rgba(255,255,255,0.25);
  color: #fff;
}

@media (max-width: 768px) {
  .lang-switch {
    position: absolute;
    right: 60px;
    top: 14px;
    margin-left: 0;
  }
}