/* 全站赛博/技术风视觉层 — 与 themes.css 变量协同 */
body.fe-body-shell {
    background-color: var(--bg-primary, #f5f7fa);
    background-image:
        linear-gradient(color-mix(in srgb, var(--primary-color, #0288d1) 4%, transparent) 1px, transparent 1px),
        linear-gradient(90deg, color-mix(in srgb, var(--primary-color, #0288d1) 4%, transparent) 1px, transparent 1px),
        radial-gradient(ellipse 90% 55% at 50% -25%, color-mix(in srgb, var(--primary-color, #0288d1) 10%, transparent), transparent 72%);
    background-size: 32px 32px, 32px 32px, 100% 100%;
    background-attachment: fixed;
}

.fe-cyber-card {
    position: relative;
    overflow: hidden;
    background: color-mix(in srgb, var(--card-bg, #fff) 94%, transparent);
    border: 1px solid color-mix(in srgb, var(--primary-color, #0288d1) 28%, var(--border-color, #e2e8f0));
    box-shadow:
        0 0 0 1px color-mix(in srgb, var(--primary-color, #0288d1) 6%, transparent),
        0 10px 36px color-mix(in srgb, var(--primary-color, #0288d1) 8%, transparent),
        inset 0 1px 0 color-mix(in srgb, #fff 50%, transparent);
    backdrop-filter: blur(10px);
}

.fe-cyber-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    right: 20px;
    height: 2px;
    border-radius: 0 0 4px 4px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--primary-color, #0288d1),
        color-mix(in srgb, var(--primary-color, #0288d1) 55%, #6366f1),
        transparent
    );
    opacity: 0.9;
    pointer-events: none;
}

/* 角标装饰 */
.fe-cyber-card::after {
    content: '';
    position: absolute;
    top: 12px;
    left: 12px;
    width: 18px;
    height: 18px;
    border-top: 2px solid color-mix(in srgb, var(--primary-color, #0288d1) 55%, transparent);
    border-left: 2px solid color-mix(in srgb, var(--primary-color, #0288d1) 55%, transparent);
    pointer-events: none;
    opacity: 0.6;
}

.fe-cyber-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary-color, #0288d1);
    background: color-mix(in srgb, var(--primary-color, #0288d1) 8%, var(--card-bg, #fff));
    border: 1px solid color-mix(in srgb, var(--primary-color, #0288d1) 28%, transparent);
    border-radius: 999px;
}

.fe-cyber-chip::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--primary-color, #0288d1);
    box-shadow: 0 0 6px var(--primary-color, #0288d1);
    animation: fe-cyber-pulse 2.4s ease-in-out infinite;
}

.fe-cyber-section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 14px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-secondary, #64748b);
}

.fe-cyber-section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, color-mix(in srgb, var(--primary-color, #0288d1) 40%, transparent), transparent);
}

@keyframes fe-cyber-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.45; transform: scale(0.8); }
}

.fe-cyber-btn {
    position: relative;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--primary-color, #0288d1) 45%, transparent);
    box-shadow:
        0 4px 24px color-mix(in srgb, var(--primary-color, #0288d1) 22%, transparent),
        inset 0 1px 0 color-mix(in srgb, #fff 30%, transparent);
}

.fe-cyber-btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, transparent 30%, rgba(255, 255, 255, 0.18) 50%, transparent 70%);
    transform: translateX(-120%);
    transition: transform 0.55s ease;
}

.fe-cyber-btn:hover:not(:disabled)::after {
    transform: translateX(120%);
}

[data-theme="fashion"] body.fe-body-shell {
    background-image:
        linear-gradient(rgba(124, 58, 237, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(124, 58, 237, 0.05) 1px, transparent 1px),
        radial-gradient(ellipse 75% 50% at 50% -18%, rgba(124, 58, 237, 0.28), transparent 68%);
}

[data-theme="fashion"] .fe-cyber-card {
    border-color: rgba(124, 58, 237, 0.4);
    box-shadow:
        0 0 0 1px rgba(124, 58, 237, 0.12),
        0 10px 44px rgba(124, 58, 237, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

@media (prefers-reduced-motion: reduce) {
    .fe-cyber-chip::before {
        animation: none;
    }

    .fe-cyber-btn::after {
        display: none;
    }
}