/* ============================================================
   HubNode 样式表 v1.0
   主机: pc1061
   设计: 深色主题 + 科技蓝
   ============================================================ */

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

:root {
    --bg-primary: #0a0a1a;
    --bg-secondary: #111133;
    --bg-card: #1a1a3a;
    --text-primary: #e0e0e0;
    --text-secondary: #888;
    --accent: #00ccff;
    --accent-dim: #0088aa;
    --green: #4ecca3;
    --red: #ff4444;
    --yellow: #ffd700;
    --border: #222244;
}

body {
    font-family: Consolas, 'Microsoft YaHei', 'Segoe UI', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* 导航栏 */
.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.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: 22px;
    font-weight: bold;
    color: var(--accent);
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.lang-current {
    color: var(--text-primary);
}

.lang-link {
    color: var(--accent) !important;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: 80px 20px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 42px;
    color: var(--accent);
    margin-bottom: 16px;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
}

.hero-stat {
    text-align: center;
}

.hero-stat-value {
    display: block;
    font-size: 32px;
    font-weight: bold;
    color: var(--accent);
}

.hero-stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent);
    color: #000;
}

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

.btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.btn-secondary:hover {
    background: rgba(0, 204, 255, 0.1);
}

/* 通用区块 */
.section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-dark {
    background: var(--bg-secondary);
    max-width: none;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-title {
    text-align: center;
    font-size: 30px;
    color: var(--accent);
    margin-bottom: 12px;
}

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

/* 功能卡片 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    padding: 28px;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: border-color 0.2s;
}

.feature-card:hover {
    border-color: var(--accent);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.feature-card h3 {
    color: var(--accent);
    margin-bottom: 8px;
    font-size: 17px;
}

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

/* 主机卡片 */
.hosts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.host-card {
    background: var(--bg-card);
    padding: 16px 20px;
    border-radius: 8px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.host-status {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.host-status.online {
    background: var(--green);
    box-shadow: 0 0 8px var(--green);
}

.host-status.offline {
    background: var(--red);
}

.host-card strong {
    color: var(--accent);
    min-width: 70px;
}

.host-os {
    color: var(--text-secondary);
    font-size: 12px;
}

.host-role {
    color: var(--text-secondary);
    font-size: 12px;
    flex: 1;
}

.host-spec {
    color: var(--yellow);
    font-size: 12px;
}

/* 开始使用 */
.start-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.start-card {
    background: var(--bg-card);
    padding: 32px;
    border-radius: 8px;
    border: 1px solid var(--border);
    text-align: center;
}

.start-card h3 {
    color: var(--accent);
    margin-bottom: 8px;
    font-size: 18px;
}

.start-card p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 14px;
}

/* 页脚 */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 48px 20px 24px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-col h4 {
    color: var(--accent);
    margin-bottom: 12px;
    font-size: 15px;
}

.footer-col p,
.footer-col a {
    color: var(--text-secondary);
    font-size: 13px;
    text-decoration: none;
    display: block;
    margin-bottom: 6px;
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    text-align: center;
    color: #444;
    font-size: 12px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    max-width: 1200px;
    margin: 0 auto;
}

/* 响应式 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 28px;
    }
    .hero-stats {
        gap: 24px;
    }
    .hero-stat-value {
        font-size: 24px;
    }
    .nav-links {
        gap: 12px;
    }
    .nav-links a {
        font-size: 12px;
    }
}