/* ============================================================
   查123 - 公共样式表
   包含：CSS变量、重置、布局、导航、底部、通用组件
   ============================================================ */

/* ========== CSS 变量 ========== */
:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-secondary: #64748b;
    --header-bg-start: #1e293b;
    --header-bg-end: #334155;
    --accent: #f59e0b;
    --code-bg: #1e293b;
    --code-text: #e2e8f0;
}

/* ========== 全局重置 ========== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Consolas', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========== 顶部导航 ========== */
.site-header {
    background: linear-gradient(135deg, var(--header-bg-start) 0%, var(--header-bg-end) 100%);
    color: #fff;
    padding: 10px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    flex-wrap: wrap;
    gap: 8px;
}

.site-header .brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-header .brand .logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
}

.site-header .brand .name {
    font-size: 1rem;
    font-weight: 600;
    color: #e2e8f0;
}

.site-header .nav-links {
    display: flex;
    gap: 20px;
    font-size: 0.82rem;
    flex-wrap: wrap;
}

.site-header .nav-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.15s;
    font-weight: 500;
}

.site-header .nav-links a:hover {
    color: #fff;
}

.site-header .nav-links a.current {
    color: #93c5fd;
    font-weight: 600;
}

/* ========== 底部 ========== */
.site-footer {
    background: linear-gradient(135deg, var(--header-bg-start) 0%, var(--header-bg-end) 100%);
    color: #64748b;
    text-align: center;
    padding: 14px 24px;
    font-size: 0.78rem;
    flex-shrink: 0;
    line-height: 1.8;
}

.site-footer .footer-brand {
    color: #94a3b8;
    font-weight: 600;
    margin-bottom: 2px;
}

.site-footer a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.15s;
}

.site-footer a:hover {
    color: #e2e8f0;
}

/* ========== 容器 ========== */
.container {
    width: 100%;
    margin: 0 auto;
    padding: 20px;
    flex: 1;
}

/* ========== 通用面板 ========== */
.panel {
    background: var(--card-bg);
    border-radius: 10px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: #f1f5f9;
    border-bottom: 1px solid var(--border);
}

.panel-header .panel-title {
    font-weight: 600;
    font-size: 0.85rem;
}

.panel-header .actions {
    display: flex;
    gap: 6px;
}

/* ========== 通用按钮 ========== */
.btn {
    padding: 5px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    background: #fff;
    color: var(--text);
    font-family: inherit;
    transition: all 0.15s;
}

.btn:hover {
    background: #f1f5f9;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

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

/* ========== 通用输入框 ========== */
textarea, input[type="text"], input[type="number"], select {
    font-family: inherit;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .site-header {
        padding: 10px 16px;
    }

    .site-header .nav-links {
        gap: 12px;
        font-size: 0.78rem;
    }

    .container {
        padding: 12px;
    }
}

@media (max-width: 480px) {
    .site-header {
        padding: 8px 12px;
    }

    .site-header .nav-links {
        gap: 10px;
        font-size: 0.72rem;
    }
}