/* ============================================================
   wu-signal.fun /status — 暗房取证实验室 美学（套用自「隐形水印工坊」设计核心）
   炭黑底 · 琥珀工作灯 · 青柠数据光 · 网格/噪点 · 衬线+等宽
   保持全部 DOM 结构与 JS 交互不变，仅换视觉层
   ============================================================ */

    :root {
        /* 暗房取证实验室 色板 */
        --bg: #0b0d0f;
        --bg-2: #0e1114;
        --surface: #14181d;
        --surface2: #1a1f26;
        --border: #262c34;
        --border-light: #333b45;
        --line-hi: #333b45;
        --text: #eae6de;
        --text-dim: #8a919c;
        --amber: #e8a33d;
        --amber-hi: #ffc061;
        --amber-deep: #b97a1f;
        --lime: #c2e34a;
        --lime-deep: #8fb52e;
        --red: #e0574f;
        --ok: #7ec26d;
        --cyan: var(--amber);          /* 兼容旧引用：主强调=琥珀工作灯 */
        --prism-purple: var(--amber);
        --prism-blue: var(--amber-deep);
        --prism-cyan: var(--lime);
        --prism-green: var(--lime-deep);
        --prism-gradient: linear-gradient(135deg, #e8a33d 0%, #c2e34a 100%);
        --prism-gradient-soft: linear-gradient(135deg, rgba(232,163,61,0.10) 0%, rgba(194,227,74,0.10) 100%);
        --glow: 0 0 18px rgba(232, 163, 61, 0.22);
        --glow-strong: 0 0 30px rgba(232, 163, 61, 0.35);
        --radius: 10px;
        --radius-sm: 8px;
        --transition: 0.35s cubic-bezier(0.2, 0.9, 0.4, 1.1);
        --font-disp: "华文中宋", "STZhongsong", "SimSun", Georgia, serif;
        --font-display: var(--font-disp);
        --font-body: "微软雅黑", "Microsoft YaHei", "PingFang SC", sans-serif;
        --font-mono: "Consolas", "Courier New", monospace;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; user-select: none; -webkit-user-select: none; }
    input, textarea, select, [contenteditable] { user-select: text; -webkit-user-select: text; }
    html { scroll-behavior: smooth; scroll-snap-type: y proximity; }
    body {
        background: var(--bg);
        color: var(--text);
        font-family: var(--font-body);
        min-height: 100vh;
        min-height: 100dvh;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 20px;
        position: relative;
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
    }
    /* 网格底纹（暗房取证） */
    body::before {
        content: '';
        position: fixed;
        inset: 0;
        background:
            linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
            linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
        background-size: 44px 44px;
        z-index: 0;
        pointer-events: none;
    }
    /* 顶部扫描线 */
    .scanline {
        position: fixed;
        top: 0; left: 0; right: 0;
        height: 2px;
        background: linear-gradient(90deg, transparent, var(--amber) 20%, var(--lime) 50%, var(--amber) 80%, transparent);
        opacity: 0.7;
        z-index: 20;
        pointer-events: none;
    }
    /* 环境光晕（琥珀/青柠，暗房氛围） */
    body::after {
        content: '';
        position: fixed;
        inset: 0;
        background:
            radial-gradient(ellipse 90% 60% at 15% -10%, rgba(232,163,61,0.07) 0%, transparent 60%),
            radial-gradient(ellipse 70% 50% at 85% 110%, rgba(194,227,74,0.05) 0%, transparent 60%);
        pointer-events: none;
        z-index: 1;
        transition: box-shadow 1s ease;
    }
    /* 在线/离线：青柠数据光 / 红灯告警 覆盖层（JS 仍切换 body.online / body.offline） */
    body.online::after { box-shadow: inset 0 0 120px 60px rgba(126,194,109,0.10); }
    body.offline::after { box-shadow: inset 0 0 120px 60px rgba(224,87,79,0.12); }
    body > * { position: relative; z-index: 1; }
    ::-webkit-scrollbar { width: 5px; height: 5px; }
    ::-webkit-scrollbar-track { background: transparent; }
    ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
    ::-webkit-scrollbar-thumb:hover { background: var(--amber-deep); }

    /* ===== 页面主体 ===== */
    .container {
        width: 100%;
        max-width: 420px;
        text-align: center;
        scroll-snap-align: start;
    }
    .title {
        font-size: 1.1rem;
        color: var(--amber);
        letter-spacing: 3px;
        margin-bottom: 8px;
        text-shadow: 0 0 12px rgba(232,163,61,.4);
        font-family: var(--font-disp);
    }
    .subtitle {
        font-size: .75rem;
        color: var(--text-dim);
        margin-bottom: 36px;
        letter-spacing: 1px;
        font-family: var(--font-mono);
    }
    .card-flip {
        perspective: 1000px;
        margin-bottom: 24px;
    }
    .card {
        position: relative;
        width: 100%;
        min-height: 200px;
        transform-style: preserve-3d;
        transition: transform .6s cubic-bezier(.4,.2,.2,1);
        cursor: pointer;
    }
    .card.flipped { transform: rotateY(180deg); }
    .card-front, .card-back {
        position: absolute;
        inset: 0;
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
        -moz-backface-visibility: hidden;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 28px 24px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        overflow: hidden;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    }
    .card-front::before, .card-back::before {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, var(--amber), transparent);
        opacity: .5;
    }
    .card-front { transform: rotateY(0deg); }
    .card-back {
        transform: rotateY(180deg);
        background: var(--surface2);
        border-color: var(--amber);
    }
    .status-dot {
        width: 12px;
        height: 12px;
        min-width: 12px;
        min-height: 12px;
        border-radius: 50%;
        flex-shrink: 0;
        margin-bottom: 16px;
        background: #3a4148;
    }
    .status-dot.online {
        background: var(--ok);
        box-shadow: 0 0 12px var(--ok);
        animation: pulse 2s infinite;
    }
    .status-dot.offline {
        background: var(--red);
        box-shadow: 0 0 12px var(--red);
    }
    @keyframes pulse {
        0%, 100% { opacity: 1; }
        50% { opacity: .5; }
    }
    .card-title {
        font-size: 1.2rem;
        font-weight: 700;
        color: var(--text);
        letter-spacing: 2px;
        margin-bottom: 8px;
        font-family: var(--font-disp);
    }
    .card-status {
        font-size: .85rem;
        color: var(--text-dim);
        margin-bottom: 16px;
        font-family: var(--font-mono);
    }
    .card-stats {
        display: flex;
        gap: 24px;
        font-size: .8rem;
    }
    .stat-item { text-align: center; }
    .stat-num {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--amber);
        text-shadow: 0 0 10px rgba(232,163,61,.3);
        font-family: var(--font-mono);
    }
    .stat-label {
        font-size: .7rem;
        color: var(--text-dim);
        margin-top: 2px;
        letter-spacing: 1px;
    }
    .ip-label {
        font-size: .7rem;
        color: var(--text-dim);
        margin-bottom: 12px;
        letter-spacing: 1px;
        font-family: var(--font-mono);
    }
    .ip-address {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--amber);
        letter-spacing: 1px;
        text-shadow: 0 0 10px rgba(232,163,61,.3);
        padding: 12px 24px;
        background: rgba(232,163,61,.05);
        border: 1px solid rgba(232,163,61,.25);
        border-radius: var(--radius-sm);
        font-family: var(--font-mono);
    }
    .hint {
        font-size: .7rem;
        color: var(--text-dim);
        margin-top: 20px;
        opacity: .6;
    }
    .refresh-time {
        font-size: .65rem;
        color: var(--text-dim);
        margin-top: 12px;
        opacity: .4;
        font-family: var(--font-mono);
    }

/* cache-bust */