/* =============================================================
 * 老司机 iOS 周报 — 站点 chrome
 * 仅 .app-* 命名空间，与 assets/page.css 中 #nice 规则正交。
 * ============================================================= */

:root {
    --c-accent: #ffb11b;
    --c-accent-dark: #e09a0c;
    --c-link: #3F5481;
    --c-link-hover: #52699D;
    --c-text: #26324F;
    --c-text-muted: #6b7793;
    --c-border: #e6e8ee;
    --c-bg: #f7f8fb;
    --c-surface: #ffffff;
    --c-surface-2: #fafbfd;
    --c-shadow: 0 1px 2px rgba(38, 50, 79, 0.04), 0 4px 16px rgba(38, 50, 79, 0.06);
    --c-shadow-lg: 0 8px 32px rgba(38, 50, 79, 0.12);
    --radius: 10px;
    --radius-sm: 6px;
    --header-h: 60px;
    --max-w: 1080px;
    --content-w: 760px;
    --transition: 160ms ease;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --c-link: #9aaadd;
        --c-link-hover: #c2cdee;
        --c-text: #e4e7ef;
        --c-text-muted: #9098ad;
        --c-border: #2a2f3d;
        --c-bg: #15171d;
        --c-surface: #1c1f28;
        --c-surface-2: #21242f;
        --c-shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.4);
        --c-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
        color-scheme: dark;
    }
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--c-bg);
    color: var(--c-text);
    font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--c-link); }
a:hover { color: var(--c-link-hover); }

/* ---------- skip link ---------- */
.app-skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 100;
    background: var(--c-accent);
    color: #1a1a1a;
    padding: 8px 16px;
    border-radius: 0 0 6px 0;
    text-decoration: none;
}
.app-skip-link:focus { left: 0; }

/* ---------- header ---------- */
.app-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--c-surface) 92%, transparent);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--c-border);
}
.app-header__inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 20px;
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 24px;
}
.app-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--c-text);
    font-weight: 600;
    flex-shrink: 0;
}
.app-brand img {
    border-radius: 8px;
    background: var(--c-surface);
    box-shadow: var(--c-shadow);
}
.app-brand__name {
    font-size: 16px;
    letter-spacing: 0.2px;
    white-space: nowrap;
}
.app-nav {
    display: flex;
    gap: 4px;
    margin-left: auto;
}
.app-nav a {
    color: var(--c-text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
}
.app-nav a:hover { color: var(--c-text); background: var(--c-surface-2); }
.app-nav a.is-active {
    color: var(--c-text);
    background: color-mix(in srgb, var(--c-accent) 18%, transparent);
}
.app-nav__external::after {
    content: " ↗";
    opacity: 0.6;
    font-size: 11px;
}

/* ---------- search ---------- */
.app-search { position: relative; flex-shrink: 0; }
.app-search__label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--c-surface-2);
    border: 1px solid var(--c-border);
    border-radius: 999px;
    padding: 0 12px;
    height: 36px;
    color: var(--c-text-muted);
    transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
    width: 240px;
}
.app-search__label:focus-within {
    border-color: var(--c-accent);
    background: var(--c-surface);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-accent) 25%, transparent);
}
.app-search__label svg { flex-shrink: 0; }
.app-search input {
    flex: 1;
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    font: inherit;
    color: var(--c-text);
    padding: 0;
}
.app-search input::placeholder { color: var(--c-text-muted); }
.app-search__kbd {
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: 4px;
    padding: 1px 6px;
    font-size: 11px;
    color: var(--c-text-muted);
}
.app-search__panel {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: min(560px, calc(100vw - 32px));
    max-height: 70vh;
    overflow-y: auto;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    box-shadow: var(--c-shadow-lg);
    padding: 6px;
}
.app-search__panel[hidden] { display: none; }
.app-search__hint {
    padding: 16px;
    color: var(--c-text-muted);
    font-size: 13px;
    text-align: center;
}
.app-search__result {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    border: 1px solid transparent;
}
.app-search__result:hover,
.app-search__result.is-active {
    background: var(--c-surface-2);
    border-color: var(--c-border);
}
.app-search__result-head {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--c-text);
    font-size: 14px;
}
.app-search__result-snippet {
    font-size: 13px;
    color: var(--c-text-muted);
    line-height: 1.5;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.app-search__result mark {
    background: color-mix(in srgb, var(--c-accent) 60%, transparent);
    color: var(--c-text);
    padding: 0 2px;
    border-radius: 2px;
}

/* ---------- main / view ---------- */
.app-main {
    flex: 1;
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 28px 20px 64px;
    outline: none;
}
.app-view { min-height: 60vh; }

.app-loading,
.app-empty {
    text-align: center;
    color: var(--c-text-muted);
    padding: 60px 20px;
    font-size: 14px;
}

/* ---------- type badge ---------- */
.app-badge {
    display: inline-flex;
    align-items: center;
    height: 20px;
    padding: 0 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
    background: var(--c-surface-2);
    color: var(--c-text-muted);
    border: 1px solid var(--c-border);
}
.app-badge--report { background: color-mix(in srgb, var(--c-accent) 22%, transparent); color: #8a5a00; border-color: color-mix(in srgb, var(--c-accent) 35%, transparent); }
.app-badge--post { background: color-mix(in srgb, #5b8def 22%, transparent); color: #2a51b3; border-color: color-mix(in srgb, #5b8def 35%, transparent); }
.app-badge--contributor { background: color-mix(in srgb, #4caf80 22%, transparent); color: #2c7956; border-color: color-mix(in srgb, #4caf80 35%, transparent); }

@media (prefers-color-scheme: dark) {
    .app-badge--report { color: #ffd58a; }
    .app-badge--post { color: #b6c7f5; }
    .app-badge--contributor { color: #9adcb9; }
}

/* ---------- hero (home) ---------- */
.app-hero {
    background: linear-gradient(135deg, color-mix(in srgb, var(--c-accent) 25%, var(--c-surface)), var(--c-surface));
    border: 1px solid var(--c-border);
    border-radius: 16px;
    padding: 36px 32px;
    margin-bottom: 32px;
    box-shadow: var(--c-shadow);
}
.app-hero__title {
    margin: 0 0 8px;
    font-size: 26px;
    color: var(--c-text);
}
.app-hero__sub {
    margin: 0 0 16px;
    color: var(--c-text-muted);
    font-size: 15px;
    line-height: 1.6;
}
.app-hero__stats {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
    color: var(--c-text-muted);
    font-size: 13px;
}
.app-hero__stats strong {
    display: block;
    font-size: 22px;
    color: var(--c-text);
    margin-bottom: 2px;
}

/* ---------- section ---------- */
.app-section { margin-bottom: 40px; }
.app-section__head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 16px;
    gap: 12px;
}
.app-section__title {
    margin: 0;
    font-size: 18px;
    color: var(--c-text);
}
.app-section__more {
    font-size: 13px;
    color: var(--c-link);
    text-decoration: none;
}
.app-section__more:hover { text-decoration: underline; }

/* ---------- card grid ---------- */
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 14px;
}

.app-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 16px;
    text-decoration: none;
    color: inherit;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    contain: content;
}
.app-card:hover {
    transform: translateY(-1px);
    border-color: color-mix(in srgb, var(--c-accent) 50%, var(--c-border));
    box-shadow: var(--c-shadow);
}
.app-card__meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--c-text-muted);
}
.app-card__title {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--c-text);
    line-height: 1.4;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.app-card__excerpt {
    margin: 0;
    font-size: 13px;
    color: var(--c-text-muted);
    line-height: 1.55;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

/* ---------- list (reports per year, posts) ---------- */
.app-year {
    margin-bottom: 28px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    overflow: hidden;
}
.app-year__head {
    width: 100%;
    background: transparent;
    border: 0;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    color: var(--c-text);
    font: inherit;
    font-size: 16px;
    font-weight: 600;
    text-align: left;
    transition: background var(--transition);
}
.app-year__head:hover { background: var(--c-surface-2); }
.app-year__head::after {
    content: "";
    width: 8px;
    height: 8px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    margin-left: auto;
    transition: transform var(--transition);
    opacity: 0.6;
}
.app-year[data-collapsed="true"] .app-year__head::after { transform: rotate(-45deg); }
.app-year[data-collapsed="true"] .app-year__body { display: none; }
.app-year__count {
    font-weight: 400;
    color: var(--c-text-muted);
    font-size: 13px;
    margin-left: 4px;
}
.app-year__body {
    list-style: none;
    margin: 0;
    padding: 6px 8px 12px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 4px;
    contain: content;
    content-visibility: auto;
    contain-intrinsic-size: 1px 600px;
}
.app-year__body li { margin: 0; }
.app-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: inherit;
    font-size: 14px;
    transition: background var(--transition);
    border: 1px solid transparent;
}
.app-row:hover {
    background: var(--c-surface-2);
    border-color: var(--c-border);
}
.app-row__issue {
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    color: var(--c-text-muted);
    font-size: 12px;
    flex-shrink: 0;
    min-width: 44px;
}
.app-row__title {
    flex: 1;
    color: var(--c-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.app-row__date {
    color: var(--c-text-muted);
    font-size: 12px;
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}

/* ---------- contributors ---------- */
.app-contributors {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}
.app-contributor {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 22px 16px;
    text-decoration: none;
    color: inherit;
    gap: 10px;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    contain: content;
}
.app-contributor:hover {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--c-accent) 50%, var(--c-border));
    box-shadow: var(--c-shadow);
}
.app-contributor__avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--c-surface-2);
}
.app-contributor__name {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--c-text);
}
.app-contributor__bio {
    margin: 0;
    font-size: 12px;
    color: var(--c-text-muted);
    line-height: 1.55;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
}

/* ---------- detail ---------- */
.app-detail {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 32px clamp(20px, 4vw, 48px) 48px;
    box-shadow: var(--c-shadow);
}
.app-detail__back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--c-text-muted);
    text-decoration: none;
    font-size: 13px;
    margin-bottom: 8px;
}
.app-detail__back:hover { color: var(--c-link); }
.app-detail__back::before { content: "←"; }
.app-detail__meta {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--c-text-muted);
    font-size: 13px;
    margin-bottom: 4px;
    flex-wrap: wrap;
}
.app-detail__meta a { font-size: 13px; }

/* keep #nice content readable on dark mode by giving the article surface coloring */
@media (prefers-color-scheme: dark) {
    .app-detail #nice { color: var(--c-text); }
    .app-detail #nice p,
    .app-detail #nice li,
    .app-detail #nice ul,
    .app-detail #nice ol,
    .app-detail #nice strong,
    .app-detail #nice em { color: var(--c-text) !important; }
    .app-detail #nice blockquote { background: var(--c-surface-2); border-left-color: var(--c-border) !important; }
    .app-detail #nice blockquote p,
    .app-detail #nice blockquote a { color: var(--c-text-muted) !important; }
    .app-detail #nice a { color: var(--c-link) !important; }
    .app-detail #nice h1,
    .app-detail #nice h2 .content,
    .app-detail #nice h3 .content,
    .app-detail #nice h4 .content,
    .app-detail #nice h5 .content,
    .app-detail #nice h6 .content { color: var(--c-text) !important; }
    .app-detail #nice p code,
    .app-detail #nice li code { background: var(--c-surface-2); color: var(--c-link) !important; }
}

/* the WeChat page.css forces images width:100% with margin-bottom:15px which is fine here; ensure overflow */
.app-detail #nice {
    max-width: var(--content-w);
    margin: 0 auto;
}
.app-detail #nice img {
    max-width: 100%;
    height: auto;
}
.app-detail #nice pre {
    overflow-x: auto;
    background: var(--c-surface-2);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    font-size: 13px;
    line-height: 1.55;
    margin: 14px 0;
}
.app-detail #nice pre code {
    background: transparent;
    color: var(--c-text);
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
}
.app-detail #nice table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
    font-size: 14px;
}
.app-detail #nice table th,
.app-detail #nice table td {
    border: 1px solid var(--c-border);
    padding: 6px 10px;
}

/* ---------- footer ---------- */
.app-footer {
    border-top: 1px solid var(--c-border);
    background: var(--c-surface);
    margin-top: 32px;
}
.app-footer__inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 22px 20px;
    color: var(--c-text-muted);
    font-size: 13px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    justify-content: space-between;
}
.app-footer__inner p { margin: 0; }

/* ---------- responsive ---------- */
@media (max-width: 720px) {
    .app-header__inner {
        flex-wrap: wrap;
        height: auto;
        padding: 10px 16px;
        gap: 10px;
    }
    .app-nav { order: 3; flex-basis: 100%; margin-left: 0; overflow-x: auto; }
    .app-search { order: 2; flex: 1; min-width: 160px; }
    .app-search__label { width: 100%; }
    .app-brand__name { font-size: 15px; }
    .app-main { padding: 18px 14px 48px; }
    .app-hero { padding: 24px 18px; }
    .app-detail { padding: 22px 16px 36px; }
}