/* common.css - CoreTools 核心样式表 */

:root {
    /* 基础颜色 - 深色模式 */
    --bg: #1e2536;
    --bg-glow1: rgba(99,102,241,0.08);
    --bg-glow2: rgba(56,189,248,0.06);
    --text: #e2e8f0;
    --text-strong: #f1f5f9;
    --text-muted: #94a3b8;
    --header-bg: rgba(30,37,54,0.85);
    --sidebar-bg: rgba(30,37,54,0.4);
    --card-bg: rgba(51,65,85,0.45);
    --card-bg-hover: rgba(71,85,105,0.6);
    --input-bg: rgba(51,65,85,0.6);
    --border: rgba(148,163,184,0.1);
    --border-strong: rgba(148,163,184,0.2);
    --accent: #60a5fa;
    --accent2: #c084fc;
    --shadow: 0 8px 25px rgba(0,0,0,0.25), 0 0 18px rgba(96,165,250,0.1);
    
    /* 间距与圆角 */
    --radius-s: 8px;
    --radius-m: 12px;
    --radius-l: 16px;
    --space-xs: 4px;
    --space-s: 8px;
    --space-m: 16px;
    --space-l: 24px;
    --header-h: 64px;
    --sidebar-w: 240px;
    
    /* 动画 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg: #f5f7fb;
    --bg-glow1: rgba(99,102,241,0.08);
    --bg-glow2: rgba(56,189,248,0.06);
    --text: #334155;
    --text-strong: #0f172a;
    --text-muted: #64748b;
    --header-bg: rgba(255,255,255,0.85);
    --sidebar-bg: rgba(255,255,255,0.6);
    --card-bg: rgba(255,255,255,0.85);
    --card-bg-hover: #ffffff;
    --input-bg: rgba(255,255,255,0.9);
    --border: rgba(15,23,42,0.08);
    --border-strong: rgba(15,23,42,0.15);
    --accent: #2563eb;
    --accent2: #9333ea;
    --shadow: 0 8px 25px rgba(15,23,42,0.08), 0 0 18px rgba(37,99,235,0.08);
}

* { 
    margin: 0; padding: 0; box-sizing: border-box; 
    -webkit-tap-highlight-color: transparent;
}

/* 滚动条美化 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { 
    background: var(--border-strong); 
    border-radius: 10px; 
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    background-image: radial-gradient(circle at 20% 0%, var(--bg-glow1), transparent 50%),
                      radial-gradient(circle at 80% 100%, var(--bg-glow2), transparent 50%);
    background-attachment: fixed;
    color: var(--text);
    min-height: 100vh;
    transition: background 0.4s, color 0.4s;
    line-height: 1.5;
}

html { scroll-behavior: smooth; }
a { text-decoration: none; color: inherit; }

/* 头部导航 */
.header {
    position: fixed; top: 0; left: 0; right: 0; height: var(--header-h);
    background: var(--header-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border); z-index: 100;
}
.header-inner {
    max-width: 1400px; margin: 0 auto; height: 100%;
    display: flex; align-items: center; padding: 0 var(--space-m); gap: var(--space-l);
}
.logo { display: flex; align-items: center; gap: 10px; cursor: pointer; flex-shrink: 0; }
.logo-mark {
    width: 32px; height: 32px; background: linear-gradient(135deg, var(--accent), var(--accent2));
    border-radius: var(--radius-s); color: white; display: flex; align-items: center;
    justify-content: center; font-weight: 800; font-size: 1.2rem;
}
.logo-text { font-size: 1.1rem; font-weight: 700; color: var(--text-strong); letter-spacing: -0.5px; }

.header-nav { display: flex; gap: var(--space-s); }
.header-nav a {
    padding: 6px 14px; border-radius: var(--radius-s); font-size: 0.9rem;
    font-weight: 500; color: var(--text-muted); transition: var(--transition);
}
.header-nav a:hover, .header-nav a.active { color: var(--accent); background: var(--border); }

.search-box { flex: 1; max-width: 500px; position: relative; }
.search-box input {
    width: 100%; padding: 10px 16px 10px 38px; background: var(--input-bg);
    border: 1px solid var(--border-strong); border-radius: var(--radius-m);
    color: var(--text); font-size: 0.88rem; outline: none; transition: var(--transition);
}
.search-box input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(96,165,250,0.15); }
.search-box::before {
    content: '🔍'; position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
    font-size: 0.85rem; opacity: 0.5;
}

.header-right { display: flex; align-items: center; gap: var(--space-m); }
.stats { font-size: 0.75rem; color: var(--text-muted); font-weight: 500; }
.stats span { color: var(--accent); font-weight: 700; }

.theme-toggle, .menu-toggle {
    background: none; border: none; cursor: pointer; font-size: 1.2rem;
    padding: 6px; border-radius: var(--radius-s); transition: var(--transition);
}
.theme-toggle:hover { background: var(--border); transform: rotate(15deg); }

/* 侧边栏布局 */
.layout {
    display: flex; max-width: 1400px; margin: var(--header-h) auto 0; padding: var(--space-m); gap: var(--space-m);
}
.sidebar {
    width: var(--sidebar-w); position: sticky; top: calc(var(--header-h) + var(--space-m));
    height: calc(100vh - var(--header-h) - var(--space-l)); overflow-y: auto;
    padding-right: var(--space-s); flex-shrink: 0;
}
.sidebar a {
    display: flex; align-items: center; gap: 10px; padding: 10px 14px;
    border-radius: var(--radius-m); font-size: 0.9rem; color: var(--text);
    transition: var(--transition); margin-bottom: 2px;
}
.sidebar a:hover { background: var(--border); color: var(--accent); }
.sidebar a.active { background: var(--card-bg); color: var(--accent); font-weight: 600; box-shadow: var(--shadow); }
.sidebar .emoji { font-size: 1.1rem; }

.main { flex: 1; min-width: 0; }
.section { margin-bottom: 40px; scroll-margin-top: calc(var(--header-h) + 20px); }
.section-title {
    display: flex; align-items: center; gap: 10px; margin-bottom: var(--space-m);
    font-size: 1.1rem; font-weight: 700; color: var(--text-strong);
}
.section-title .count {
    font-size: 0.75rem; font-weight: 500; color: var(--text-muted);
    background: var(--border); padding: 2px 8px; border-radius: 20px;
}

/* 通用卡片样式基础 */
.card {
    display: flex; background: var(--card-bg); border: 1px solid var(--border);
    border-radius: var(--radius-l); transition: var(--transition);
    cursor: pointer; text-decoration: none;
}
.card:hover {
    transform: translateY(-3px); border-color: var(--accent);
    background: var(--card-bg-hover); box-shadow: var(--shadow);
}

.no-results {
    display: none; text-align: center; padding: 100px 20px;
    color: var(--text-muted); font-size: 0.95rem;
}

.footer {
    text-align: center; padding: 60px 20px; color: var(--text-muted);
    font-size: 0.8rem; border-top: 1px solid var(--border); margin-top: 40px;
}

/* 移动端菜单 */
.menu-toggle { display: none; flex-direction: column; gap: 4px; padding: 8px; }
.menu-toggle span { width: 18px; height: 2px; background: var(--text); transition: var(--transition); }
.menu-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: var(--header-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-strong);
    padding: var(--space-s) var(--space-m) var(--space-m); z-index: 90;
    transform: translateY(-100%); opacity: 0; pointer-events: none;
    transition: transform 0.3s ease, opacity 0.25s ease;
    display: flex; flex-direction: column; gap: var(--space-s);
    box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
.mobile-menu.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-menu a {
    padding: 14px 16px; background: var(--card-bg); border: 1px solid var(--border);
    border-radius: var(--radius-m); font-weight: 600; font-size: 0.95rem;
    color: var(--text); transition: var(--transition);
}
.mobile-menu a:hover, .mobile-menu a.active { color: var(--accent); border-color: var(--accent); }
.mobile-menu .stats {
    text-align: center; font-size: 0.78rem; color: var(--text-muted);
    padding-top: var(--space-s); border-top: 1px solid var(--border);
    margin-top: var(--space-xs);
}
.mobile-menu .stats span { color: var(--accent); font-weight: 700; }

/* 复制提示 */
.tool-copy-toast {
    position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%);
    background: var(--accent); color: white; padding: 10px 24px;
    border-radius: var(--radius-m); font-size: 0.88rem; font-weight: 600;
    opacity: 0; transition: opacity 0.3s; pointer-events: none; z-index: 200;
    box-shadow: var(--shadow);
}
.tool-copy-toast.show { opacity: 1; }

@media (max-width: 1024px) {
    .sidebar { display: none; }
    .header-inner { gap: var(--space-s); }
    .stats, .header-nav { display: none; }
    .menu-toggle { display: flex; }
}