/* 云母主题 — Fluent Mica：半透明磨砂、壁纸色调渗透 */
[data-theme="mica"] {
    --bg: #e5e5ea;
    --bg-accent: rgba(255, 255, 255, 0.45);
    --card: rgba(255, 255, 255, 0.68);
    --text: #1a1a1a;
    --muted: #5c5c5c;
    --accent: #0067c0;
    --accent-hover: #005a9e;
    --accent-soft: rgba(0, 103, 192, 0.12);
    --accent-light: #429ce3;
    --border: rgba(0, 0, 0, 0.06);
    --border-hover: rgba(0, 0, 0, 0.1);
    --focus-ring: rgba(0, 103, 192, 0.28);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.05);
    --post-link: #1a1a1a;
    --post-link-visited: #5c5c5c;
    --post-link-hover: #0067c0;
    --post-link-active: #005a9e;
    --header-bg: rgba(243, 243, 243, 0.72);
    --header-blur: blur(28px) saturate(1.8);
    --header-accent: transparent;
    --hero-bg: rgba(255, 255, 255, 0.42);
    --hero-text: var(--text);
    --hero-subtext: var(--muted);
    --hero-subtitle: var(--text);
    --footer-bg: rgba(32, 32, 32, 0.55);
    --footer-text: rgba(255, 255, 255, 0.88);
    --footer-link: #7ec0ff;
    --mica-blur: blur(24px) saturate(1.7);
}

[data-theme="mica"] body {
    background-color: var(--bg);
    background-image:
        radial-gradient(ellipse 70% 55% at 15% 10%, rgba(147, 197, 253, 0.45) 0%, transparent 55%),
        radial-gradient(ellipse 60% 50% at 88% 15%, rgba(196, 181, 253, 0.35) 0%, transparent 50%),
        radial-gradient(ellipse 65% 45% at 70% 92%, rgba(110, 231, 213, 0.22) 0%, transparent 48%),
        radial-gradient(ellipse 50% 40% at 5% 75%, rgba(251, 191, 36, 0.12) 0%, transparent 45%),
        linear-gradient(165deg, #ebebef 0%, #d8d8de 45%, #ceced4 100%);
    background-attachment: fixed;
}

[data-theme="mica"] .blog-top {
    border-bottom-color: rgba(255, 255, 255, 0.35);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5) inset, 0 1px 8px rgba(0, 0, 0, 0.04);
}

[data-theme="mica"] .nav-dropdown {
    background: rgba(252, 252, 252, 0.78);
    backdrop-filter: var(--mica-blur);
    -webkit-backdrop-filter: var(--mica-blur);
    border-color: rgba(255, 255, 255, 0.6);
}

[data-theme="mica"] .nav-search-results {
    background: rgba(252, 252, 252, 0.85);
    backdrop-filter: var(--mica-blur);
    -webkit-backdrop-filter: var(--mica-blur);
}

[data-theme="mica"] .blog-hero {
    backdrop-filter: var(--mica-blur);
    -webkit-backdrop-filter: var(--mica-blur);
    border: 1px solid rgba(255, 255, 255, 0.55);
    box-shadow: var(--shadow-card);
}

[data-theme="mica"] .post-card,
[data-theme="mica"] .sidebar-card,
[data-theme="mica"] .article-card,
[data-theme="mica"] .article-toc {
    background: var(--card);
    backdrop-filter: var(--mica-blur);
    -webkit-backdrop-filter: var(--mica-blur);
    border-color: rgba(255, 255, 255, 0.5);
}

[data-theme="mica"] .post-card {
    border-left-color: transparent;
}
[data-theme="mica"] .post-card:hover {
    border-left-color: var(--accent);
    background: rgba(255, 255, 255, 0.78);
}

[data-theme="mica"] .post-card.is-read {
    background: rgba(255, 255, 255, 0.52);
}

[data-theme="mica"] .post-meta .cat {
    background: rgba(0, 103, 192, 0.1);
    color: var(--accent);
    backdrop-filter: blur(8px);
}

[data-theme="mica"] .sidebar-card {
    border-top-color: rgba(0, 103, 192, 0.35);
}

[data-theme="mica"] .profile-avatar {
    background: rgba(0, 103, 192, 0.85);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 16px rgba(0, 103, 192, 0.25);
}

[data-theme="mica"] .social-icon {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
}

[data-theme="mica"] .tag-cloud a {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    border-color: rgba(255, 255, 255, 0.6);
}
[data-theme="mica"] .tag-cloud a:hover {
    background: var(--accent-soft);
    border-color: rgba(0, 103, 192, 0.25);
    color: var(--accent);
}

[data-theme="mica"] .article-body pre {
    background: rgba(27, 26, 25, 0.92);
    border-left-color: var(--accent);
}

[data-theme="mica"] .article-body blockquote {
    background: rgba(0, 103, 192, 0.08);
    border-left-color: var(--accent);
    backdrop-filter: blur(8px);
}

[data-theme="mica"] .filter-hint {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: var(--mica-blur);
    border-color: rgba(255, 255, 255, 0.6);
}
[data-theme="mica"] .filter-hint a {
    color: var(--accent);
    font-weight: 600;
}

[data-theme="mica"] .theme-option.is-active {
    background: rgba(0, 103, 192, 0.85);
    border-color: transparent;
    color: #fff;
    backdrop-filter: blur(8px);
}

[data-theme="mica"] .page-hero,
[data-theme="mica"] .resource-grid .resource-card,
[data-theme="mica"] .friend-card,
[data-theme="mica"] .archive-year-block {
    background: var(--card);
    backdrop-filter: var(--mica-blur);
    -webkit-backdrop-filter: var(--mica-blur);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--shadow);
}

[data-theme="mica"] .blog-footer {
    backdrop-filter: var(--mica-blur);
    -webkit-backdrop-filter: var(--mica-blur);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

[data-theme="mica"] .blog-footer a:hover {
    color: #a8d4ff;
}

[data-theme="mica"] .blog-nav--mobile {
    background: rgba(252, 252, 252, 0.82);
    backdrop-filter: var(--mica-blur);
    -webkit-backdrop-filter: var(--mica-blur);
}