/* =============================================================
 *  theme.css - 全站共享设计语言
 *  用于：index.html  /  connect.html
 *  仅放共用变量、玻璃态、背景动画、按钮、备案、响应式。
 * ============================================================= */

:root {
    --bg-0: #05060f;
    --bg-1: #0a0e2a;
    --bg-2: #1a0e3a;

    --accent-a: #6c8cff;
    --accent-b: #b06bff;
    --accent-c: #19f7ff;
    --accent-d: #ff5fb1;
    --accent-cyan: #38bdf8;
    --accent-indigo: #6366f1;

    --c-ok: #4ade80;
    --c-warn: #fbbf24;
    --c-error: #f87171;
    --c-info: #60a5fa;
    --c-purple: #a78bfa;

    --text: #eaf0ff;
    --text-soft: rgba(234, 240, 255, 0.72);
    --text-mute: rgba(234, 240, 255, 0.48);
    --text-darker: rgba(234, 240, 255, 0.36);

    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-bg-strong: rgba(255, 255, 255, 0.1);
    --glass-bg-soft: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.14);
    --glass-border-strong: rgba(255, 255, 255, 0.22);
    --glass-shadow: 0 10px 40px rgba(0, 0, 0, 0.45);

    --radius-xl: 24px;
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 10px;
}

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

html, body { height: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg-0);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    /* 与原 index 背景一致 */
    background:
        radial-gradient(ellipse 80% 60% at 0% 0%, rgba(108, 140, 255, 0.18), transparent 60%),
        radial-gradient(ellipse 70% 50% at 100% 100%, rgba(176, 107, 255, 0.18), transparent 60%),
        radial-gradient(ellipse 60% 50% at 50% 50%, rgba(25, 247, 255, 0.1), transparent 65%),
        linear-gradient(180deg, var(--bg-0), var(--bg-1) 60%, var(--bg-0));
    background-attachment: fixed;
}

/* ===================== 背景层（两页公用） ===================== */
.bg-layer {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.bg-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.55;
    mix-blend-mode: screen;
    will-change: transform;
}
.bg-blob.b1 {
    width: 620px; height: 620px;
    background: radial-gradient(circle, var(--accent-a), transparent 65%);
    top: -120px; left: -120px;
    animation: float-1 22s ease-in-out infinite;
}
.bg-blob.b2 {
    width: 540px; height: 540px;
    background: radial-gradient(circle, var(--accent-b), transparent 65%);
    bottom: -160px; right: -120px;
    animation: float-2 26s ease-in-out infinite;
}
.bg-blob.b3 {
    width: 460px; height: 460px;
    background: radial-gradient(circle, var(--accent-c), transparent 65%);
    top: 30%; left: 60%;
    animation: float-3 30s ease-in-out infinite;
}
.bg-blob.b4 {
    width: 360px; height: 360px;
    background: radial-gradient(circle, var(--accent-d), transparent 65%);
    top: 55%; left: 8%;
    animation: float-4 34s ease-in-out infinite;
}
@keyframes float-1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(120px, 80px) scale(1.15); }
}
@keyframes float-2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-100px, -120px) scale(1.1); }
}
@keyframes float-3 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-160px, 90px) scale(0.92); }
}
@keyframes float-4 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(140px, -60px) scale(1.18); }
}

.bg-grain {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 3px 3px;
    opacity: 0.35;
    mix-blend-mode: overlay;
    pointer-events: none;
}
.bg-vignette {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.55) 100%);
    pointer-events: none;
}
#particles {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* ===================== 通用工具类 ===================== */
.shell {
    position: relative;
    z-index: 2;
    max-width: 1320px;
    margin: 0 auto;
    padding: 36px 32px 60px;
}

/* 玻璃面板（强） */
.glass {
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.14),
            rgba(255, 255, 255, 0.05));
    border: 1px solid var(--glass-border-strong);
    backdrop-filter: blur(28px) saturate(160%);
    -webkit-backdrop-filter: blur(28px) saturate(160%);
    box-shadow:
        0 24px 70px rgba(2, 8, 40, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        inset 0 -1px 0 rgba(255, 255, 255, 0.08);
}

/* 玻璃卡片（中） */
.glass-card {
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.1),
            rgba(255, 255, 255, 0.03));
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    box-shadow:
        0 8px 28px rgba(2, 8, 40, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.18);
    transition: transform .25s ease, border-color .25s ease, background .25s ease;
}

/* 玻璃模态框（更强） */
.glass-modal {
    background: linear-gradient(135deg,
            rgba(255, 255, 255, 0.2),
            rgba(255, 255, 255, 0.07));
    border: 1px solid rgba(255, 255, 255, 0.32);
    backdrop-filter: blur(42px) saturate(190%);
    -webkit-backdrop-filter: blur(42px) saturate(190%);
    box-shadow:
        0 40px 100px rgba(2, 8, 40, 0.65),
        inset 0 1px 0 rgba(255, 255, 255, 0.42),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
}

/* 通用按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border-radius: var(--radius-md);
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    cursor: pointer;
    transition: all .2s ease;
    border: 1px solid transparent;
    user-select: none;
    text-decoration: none;
    white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-indigo), var(--accent-b));
    background-size: 200% 200%;
    box-shadow: 0 10px 24px rgba(56, 189, 248, 0.35);
}
.btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    animation: btn-shift 4s ease infinite;
}
.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.22);
}
.btn-danger {
    background: rgba(248, 113, 113, 0.12);
    border: 1px solid rgba(248, 113, 113, 0.4);
    color: #fca5a5;
}
.btn-danger:hover {
    background: rgba(248, 113, 113, 0.24);
}
@keyframes btn-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* 状态徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
}
.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: currentColor;
    box-shadow: 0 0 10px currentColor;
}
.badge.ok, .status-ok { color: var(--c-ok); background: rgba(74, 222, 128, 0.12); border: 1px solid rgba(74, 222, 128, 0.35); }
.badge.warn, .status-warn { color: var(--c-warn); background: rgba(251, 191, 36, 0.12); border: 1px solid rgba(251, 191, 36, 0.35); }
.badge.error, .status-error { color: var(--c-error); background: rgba(248, 113, 113, 0.12); border: 1px solid rgba(248, 113, 113, 0.35); }
.badge.info, .status-info { color: var(--c-info); background: rgba(96, 165, 250, 0.12); border: 1px solid rgba(96, 165, 250, 0.35); }
.badge.purple, .status-unknown, .status-purple { color: var(--c-purple); background: rgba(167, 139, 250, 0.12); border: 1px solid rgba(167, 139, 250, 0.35); }

/* 玻璃输入框 */
.glass-input {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    color: var(--text);
    transition: border-color .2s, box-shadow .2s, background .2s;
}
.glass-input:focus {
    outline: none;
    border-color: rgba(56, 189, 248, 0.6);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.18);
    background: rgba(255, 255, 255, 0.1);
}
.glass-input::placeholder { color: rgba(229, 231, 255, 0.4); }

/* 顶部品牌栏（共用） */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}
.brand-logo {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
    display: grid;
    place-items: center;
    box-shadow: 0 8px 24px rgba(108, 140, 255, 0.4),
        inset 0 0 0 1px rgba(255, 255, 255, 0.25);
    position: relative;
    overflow: hidden;
}
.brand-logo::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.5), transparent 55%);
}
.brand-logo svg {
    width: 26px;
    height: 26px;
    position: relative;
    z-index: 1;
}
.brand-text h1 {
    font-size: 22px;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #fff, #b9c6ff 60%, #d4b3ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 700;
}
.brand-text small {
    display: block;
    color: var(--text-mute);
    letter-spacing: 4px;
    font-size: 11px;
    margin-top: 2px;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}
.info-chip {
    padding: 8px 14px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-radius: 999px;
    font-size: 12px;
    color: var(--text-soft);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.info-chip .live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #2cf07d;
    box-shadow: 0 0 8px #2cf07d;
    animation: pulse 1.6s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.25); }
}

/* ===================== 底部备案（共用） ===================== */
.footer {
    margin-top: 60px;
    padding-top: 22px;
    border-top: 1px dashed var(--glass-border);
    text-align: center;
    color: var(--text-mute);
    font-size: 12px;
    line-height: 1.9;
}
.kbd {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 4px;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 11px;
    margin: 0 2px;
}
.beian {
    margin-top: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}
.beian-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-mute);
    text-decoration: none;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.beian-link:hover {
    color: var(--text);
    border-color: var(--glass-border);
    background: rgba(255, 255, 255, 0.04);
}
.beian-svg {
    width: 14px;
    height: 14px;
    opacity: .8;
    flex-shrink: 0;
}

/* ===================== 可访问性：减少动画 ===================== */
@media (prefers-reduced-motion: reduce) {
    .bg-blob { animation: none; }
    * {
        transition-duration: .001ms !important;
        animation-duration: .001ms !important;
    }
}

/* ===================== 响应式 ===================== */
@media (max-width: 720px) {
    .shell { padding: 22px 16px 40px; }
    .topbar { gap: 10px; }
    .info-chip { font-size: 11px; padding: 6px 10px; }
    .brand-text h1 { font-size: 18px; }
}