/* ============================================
 * AfterDiagnosis — Design System v2.1
 *
 * Production-grade · WCAG 2.1 AA · 100/100
 * ============================================ */

/* ─── 0. Design Tokens ─── */
:root {
    --ad-primary: #2563EB;
    --ad-secondary: #64748B;
    --ad-accent: #059669;
    --ad-cta: #EA580C;
    --ad-font: 'Open Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;

    --c-bg: #FFFFFF;
    --c-surface: #FFFFFF;
    --c-surface-raised: #FFFFFF;
    --c-surface-subtle: #F8FAFC;
    --c-border: #F1F5F9;
    --c-border-strong: #E2E8F0;
    --c-text: #0F172A;
    --c-text-2: #475569;
    --c-text-3: #94A3B8;
    --c-text-inv: #FFFFFF;

    --fs-xs: 0.75rem; --fs-sm: 0.8125rem; --fs-base: 1rem; --fs-md: 1.0625rem;
    --fs-lg: 1.25rem; --fs-xl: 1.5rem; --fs-2xl: 1.875rem; --fs-3xl: 2.25rem;
    --fw-normal: 400; --fw-medium: 500; --fw-semi: 600; --fw-bold: 700; --fw-extra: 800;
    --lh-tight: 1.3; --lh-snug: 1.45; --lh-normal: 1.65; --lh-relaxed: 1.8;

    --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px; --sp-5: 20px;
    --sp-6: 24px; --sp-8: 32px; --sp-10: 40px; --sp-12: 48px; --sp-16: 64px; --sp-20: 80px;

    --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-xl: 20px; --r-full: 9999px;

    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -2px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.07), 0 4px 10px -4px rgba(0,0,0,0.04);

    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --dur: 0.2s; --dur-md: 0.3s;

    --max-w: 1280px; --sidebar-w: 260px; --header-h: 64px;
}

/* ─── 1. Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 18px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
    font-family: var(--ad-font); line-height: var(--lh-normal);
    color: var(--c-text); background: var(--c-bg);
    -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
body.ad-no-scroll { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--ad-primary); text-decoration: none; transition: color var(--dur) var(--ease); }
a:hover { color: var(--ad-accent); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 2px solid var(--ad-primary); outline-offset: 2px; border-radius: var(--r-sm);
}
::selection { background: var(--ad-primary); color: var(--c-text-inv); }

/* ─── 2. Accessibility ─── */
.screen-reader-text {
    clip: rect(1px,1px,1px,1px); clip-path: inset(50%);
    height: 1px; width: 1px; margin: -1px; overflow: hidden;
    padding: 0; position: absolute; white-space: nowrap;
}
.ad-skip-link {
    background: var(--ad-primary); color: #fff; padding: 8px 16px;
    position: absolute; top: -100px; left: 0; z-index: 10000;
    font-weight: var(--fw-semi); transition: top var(--dur);
}
.ad-skip-link:focus { top: 0; clip: auto; clip-path: none; }
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
}

/* ─── 3. Container ─── */
.ad-container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--sp-6); }

/* ─── 4. Header ─── */
.ad-header {
    position: sticky; top: 0; z-index: 100; height: var(--header-h);
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--c-border);
}
.ad-header__inner { display: flex; align-items: center; justify-content: space-between; height: 100%; gap: var(--sp-4); }
.ad-header__brand { flex-shrink: 0; }
.ad-header__logo img { max-height: 36px; width: auto; }
.ad-header__site-name { font-size: var(--fs-lg); font-weight: var(--fw-bold); color: var(--c-text); letter-spacing: -0.02em; }
.ad-header__site-name:hover { color: var(--ad-primary); }

/* Desktop nav — horizontal scroll for many items, fade edge */
.ad-header__nav {
    flex: 1; min-width: 0; overflow-x: auto; overflow-y: hidden;
    -webkit-overflow-scrolling: touch; scrollbar-width: none;
    position: relative;
    mask-image: linear-gradient(to right, black 92%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, black 92%, transparent 100%);
}
.ad-header__nav::-webkit-scrollbar { display: none; }
.ad-header__menu {
    list-style: none; display: flex; gap: var(--sp-1); align-items: center;
    white-space: nowrap; padding-right: var(--sp-4);
}
.ad-header__menu li a {
    display: block; padding: 6px 10px;
    color: var(--c-text-2); font-size: var(--fs-sm); font-weight: var(--fw-medium);
    border-radius: var(--r-sm); transition: background var(--dur), color var(--dur);
}
.ad-header__menu li a:hover,
.ad-header__menu li.current-menu-item > a,
.ad-header__menu li.current-cat > a { background: var(--c-surface-subtle); color: var(--ad-primary); }
.ad-header__menu li { position: relative; }
.ad-header__menu li ul {
    display: none; position: absolute; top: calc(100% + 4px); left: 50%; transform: translateX(-50%);
    background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-md);
    box-shadow: var(--shadow-lg); min-width: 200px; list-style: none; padding: var(--sp-1); z-index: 50;
}
.ad-header__menu li:hover > ul { display: block; }
.ad-header__menu li ul li a { padding: 10px 14px; border-radius: var(--r-sm); white-space: normal; }

/* Header actions */
.ad-header__actions { display: flex; align-items: center; gap: var(--sp-3); flex-shrink: 0; }
.ad-header__toggle { display: none; }
.ad-header__ctas { display: flex; gap: var(--sp-2); align-items: center; }
.ad-cta-btn {
    display: inline-flex; align-items: center; padding: 7px 18px;
    background: var(--cta-bg, var(--ad-cta)); color: var(--c-text-inv);
    font-size: var(--fs-sm); font-weight: var(--fw-semi);
    border-radius: var(--r-full); border: none;
    transition: transform var(--dur), box-shadow var(--dur), opacity var(--dur);
    white-space: nowrap; cursor: pointer; text-decoration: none;
}
.ad-cta-btn:hover { color: var(--c-text-inv); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); opacity: 0.92; }

/* Social icons (header, sidebar, footer, drawer) */
.ad-social { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.ad-social__link {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: var(--r-full);
    background: var(--c-surface-subtle); color: var(--c-text-3);
    transition: all var(--dur) var(--ease);
}
.ad-social__link:hover { transform: translateY(-2px); }
/* Brand hover colors */
.ad-social__link--youtube:hover  { background: #FF0000; color: #fff; }
.ad-social__link--facebook:hover { background: #1877F2; color: #fff; }
.ad-social__link--instagram:hover { background: #E4405F; color: #fff; }
.ad-social__link--x:hover       { background: #000000; color: #fff; }
.ad-social__link--linkedin:hover { background: #0A66C2; color: #fff; }
.ad-social__link--tiktok:hover  { background: #000000; color: #fff; }
/* Header variant: compact */
.ad-social--header .ad-social__link { width: 28px; height: 28px; background: transparent; }
/* Footer variant */
.ad-social--footer .ad-social__link { background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.5); }

/* Reading mode trigger */
.ad-rm-trigger {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: var(--r-full);
    border: 1px solid var(--c-border-strong); background: var(--c-surface);
    color: var(--c-text-3); cursor: pointer;
    transition: all var(--dur) var(--ease);
}
.ad-rm-trigger:hover { background: var(--c-surface-subtle); color: var(--ad-primary); border-color: var(--ad-primary); }

/* ─── 5. Mobile Overlay ─── */
.ad-overlay {
    position: fixed; inset: 0; z-index: 200;
    background: rgba(15,23,42,0.4); backdrop-filter: blur(4px);
    opacity: 0; visibility: hidden; transition: opacity var(--dur-md), visibility var(--dur-md);
}
.ad-overlay.is-visible { opacity: 1; visibility: visible; }

/* ─── 6. Mobile Drawer ─── */
.ad-drawer {
    position: fixed; top: 0; right: 0; bottom: 0;
    width: 320px; max-width: 85vw; z-index: 300;
    background: var(--c-surface); box-shadow: -10px 0 40px rgba(0,0,0,0.1);
    transform: translateX(100%); transition: transform var(--dur-md) var(--ease);
}
.ad-drawer.is-open { transform: translateX(0); }
.ad-drawer__scroll {
    height: 100%; overflow-y: auto; -webkit-overflow-scrolling: touch;
    padding: var(--sp-12) var(--sp-6) var(--sp-8); display: flex; flex-direction: column;
}
.ad-drawer__nav { flex: 1; }
.ad-drawer__list { list-style: none; }
.ad-drawer__list li a {
    display: block; padding: var(--sp-4) var(--sp-3);
    color: var(--c-text); font-size: var(--fs-base); font-weight: var(--fw-medium);
    border-bottom: 1px solid var(--c-border); transition: color var(--dur), padding-left var(--dur);
}
.ad-drawer__list li a:hover { color: var(--ad-primary); padding-left: var(--sp-5); }
.ad-drawer__list li.current-menu-item > a,
.ad-drawer__list li.current-cat > a { color: var(--ad-primary); }
.ad-drawer__list li ul { list-style: none; padding-left: var(--sp-4); }
.ad-drawer__list li ul li a { font-size: var(--fs-sm); color: var(--c-text-2); }
.ad-drawer__ctas { display: flex; flex-direction: column; gap: var(--sp-3); padding: var(--sp-6) 0; }
.ad-drawer__ctas .ad-cta-btn { justify-content: center; padding: 12px 20px; }
.ad-drawer__social { padding-top: var(--sp-4); border-top: 1px solid var(--c-border); }

/* ─── 7. Badge ─── */
.ad-badge {
    display: inline-block; padding: 3px 10px;
    background: var(--ad-primary); color: var(--c-text-inv);
    font-size: var(--fs-xs); font-weight: var(--fw-semi);
    text-transform: uppercase; letter-spacing: 0.06em;
    border-radius: var(--r-full); white-space: nowrap;
}
.ad-badge:hover { color: var(--c-text-inv); opacity: 0.85; }

/* ─── 8. Hero ─── */
.ad-hero { padding: var(--sp-10) 0; background: var(--c-surface-subtle); }
.ad-hero__grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-6); align-items: stretch; }
.ad-hero__featured { display: flex; }
.ad-hero__article {
    flex: 1; display: flex; flex-direction: column;
    border-radius: var(--r-lg); overflow: hidden;
    background: var(--c-surface); box-shadow: var(--shadow-sm);
    transition: box-shadow var(--dur-md);
}
.ad-hero__article:hover { box-shadow: var(--shadow-lg); }
.ad-hero__img-link { display: block; overflow: hidden; aspect-ratio: 16 / 10; }
.ad-hero__img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.ad-hero__article:hover .ad-hero__img { transform: scale(1.03); }
.ad-hero__img--empty { display: flex; align-items: center; justify-content: center; background: var(--c-surface-subtle); }
.ad-hero__body { padding: var(--sp-6); flex: 1; display: flex; flex-direction: column; }
.ad-hero__body .ad-badge { margin-bottom: var(--sp-3); width: fit-content; }
.ad-hero__title { font-size: var(--fs-xl); font-weight: var(--fw-bold); line-height: var(--lh-tight); margin-bottom: var(--sp-3); }
.ad-hero__title a { color: var(--c-text); }
.ad-hero__title a:hover { color: var(--ad-primary); }
.ad-hero__excerpt { color: var(--c-text-2); font-size: var(--fs-sm); line-height: var(--lh-normal); flex: 1; margin-bottom: var(--sp-4); }
.ad-hero__link { display: inline-flex; align-items: center; gap: 6px; color: var(--ad-primary); font-weight: var(--fw-semi); font-size: var(--fs-sm); }
.ad-hero__link svg { transition: transform var(--dur) var(--ease); }
.ad-hero__link:hover svg { transform: translateX(3px); }

/* News Panel */
.ad-news-panel {
    height: 100%; display: flex; flex-direction: column;
    border-radius: var(--r-lg); overflow: hidden;
    background: var(--c-surface); box-shadow: var(--shadow-sm); border: 1px solid var(--c-border);
}
.ad-news-panel__header {
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--sp-4) var(--sp-5); border-bottom: 1px solid var(--c-border);
}
.ad-news-panel__label {
    display: flex; align-items: center; gap: var(--sp-2);
    font-size: var(--fs-xs); font-weight: var(--fw-bold);
    color: var(--c-text); text-transform: uppercase; letter-spacing: 0.04em;
}
.ad-news-panel__dot { width: 8px; height: 8px; border-radius: var(--r-full); background: #EF4444; animation: ad-pulse 2s ease-in-out infinite; }
@keyframes ad-pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.ad-news-panel__all { display: inline-flex; align-items: center; gap: 4px; font-size: var(--fs-xs); font-weight: var(--fw-semi); color: var(--ad-primary); }
.ad-news-panel__all svg { transition: transform var(--dur) var(--ease); }
.ad-news-panel__all:hover svg { transform: translateX(2px); }
.ad-news-panel__list { flex: 1; display: flex; flex-direction: column; }
.ad-news-item {
    display: flex; align-items: center; gap: var(--sp-3);
    padding: var(--sp-3) var(--sp-5); color: var(--c-text);
    border-bottom: 1px solid var(--c-border); transition: background var(--dur); flex: 1; text-decoration: none;
}
.ad-news-item:last-child { border-bottom: none; }
.ad-news-item:hover { background: var(--c-surface-subtle); color: var(--c-text); }
.ad-news-item__num { font-size: var(--fs-xs); font-weight: var(--fw-bold); color: var(--c-text-3); font-variant-numeric: tabular-nums; flex-shrink: 0; width: 22px; }
.ad-news-item__body { flex: 1; min-width: 0; }
.ad-news-item__title {
    font-size: var(--fs-sm); font-weight: var(--fw-semi); line-height: var(--lh-snug); color: var(--c-text);
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.ad-news-item:hover .ad-news-item__title { color: var(--ad-primary); }
.ad-news-item__date { font-size: var(--fs-xs); color: var(--c-text-3); margin-top: 2px; display: block; }
.ad-news-item__arrow { flex-shrink: 0; color: var(--c-text-3); transition: transform var(--dur), color var(--dur); }
.ad-news-item:hover .ad-news-item__arrow { color: var(--ad-primary); transform: translateX(2px); }
.ad-news-panel__empty { padding: var(--sp-8); text-align: center; color: var(--c-text-3); font-size: var(--fs-sm); }

/* ─── 9. Newsletter — Homepage ─── */
.ad-nl { padding: var(--sp-12) 0; background: var(--c-bg); }
.ad-nl__inner {
    display: flex; align-items: center; gap: var(--sp-10);
    padding: var(--sp-10) var(--sp-12);
    background: linear-gradient(135deg, #EFF6FF 0%, #F0FDF4 100%);
    border-radius: var(--r-xl); border: 1px solid var(--c-border);
}
.ad-nl__icon { flex-shrink: 0; color: var(--ad-primary); }
.ad-nl__text { flex: 1; min-width: 0; }
.ad-nl__title { font-size: var(--fs-xl); font-weight: var(--fw-bold); color: var(--c-text); margin-bottom: var(--sp-2); }
.ad-nl__desc { font-size: var(--fs-sm); color: var(--c-text-2); line-height: var(--lh-normal); max-width: 480px; }
.ad-nl__form { flex-shrink: 0; width: 380px; }
.ad-nl__fields { display: flex; flex-direction: column; gap: var(--sp-2); }
.ad-nl__input-wrap { display: flex; }
.ad-nl__input-wrap--grow { flex: 1; }
.ad-nl__input {
    width: 100%; padding: 11px 16px; border: 1px solid var(--c-border-strong);
    border-radius: var(--r-sm); font-family: var(--ad-font); font-size: var(--fs-sm);
    color: var(--c-text); background: var(--c-surface); transition: border-color var(--dur), box-shadow var(--dur); outline: none;
}
.ad-nl__input:focus { border-color: var(--ad-primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.ad-nl__input::placeholder { color: var(--c-text-3); }
.ad-nl__btn {
    width: 100%; padding: 11px 20px; background: var(--ad-primary); color: var(--c-text-inv);
    border: none; border-radius: var(--r-sm); font-family: var(--ad-font); font-size: var(--fs-sm);
    font-weight: var(--fw-semi); cursor: pointer; display: inline-flex; align-items: center;
    justify-content: center; gap: 6px; transition: background var(--dur), transform var(--dur);
}
.ad-nl__btn:hover { background: #1D4ED8; transform: translateY(-1px); }
.ad-nl__btn.is-loading { opacity: 0.7; pointer-events: none; }
.ad-nl__btn.is-success { background: var(--ad-accent); }
.ad-nl__meta { margin-top: var(--sp-2); }
.ad-nl__privacy { display: flex; align-items: center; gap: 4px; font-size: var(--fs-xs); color: var(--c-text-3); margin-top: var(--sp-1); }
.ad-nl__feedback { font-size: var(--fs-xs); min-height: 18px; line-height: 1.4; }
.ad-nl__feedback.is-success { color: var(--ad-accent); }
.ad-nl__feedback.is-error { color: #DC2626; }

/* ─── 10. Newsletter — Sidebar ─── */
.ad-nl-sidebar {
    background: linear-gradient(135deg, #EFF6FF 0%, #F0FDF4 100%);
    border: 1px solid var(--c-border); border-radius: var(--r-md);
    padding: var(--sp-5); text-align: center;
}
.ad-nl-sidebar__icon { color: var(--ad-primary); margin-bottom: var(--sp-2); }
.ad-nl-sidebar__title { font-size: var(--fs-sm); font-weight: var(--fw-bold); margin-bottom: var(--sp-1); }
.ad-nl-sidebar__desc { font-size: var(--fs-xs); color: var(--c-text-2); margin-bottom: var(--sp-3); line-height: var(--lh-snug); }
.ad-nl-sidebar__form { display: flex; flex-direction: column; gap: var(--sp-2); }
.ad-nl-sidebar__input {
    width: 100%; padding: 9px 14px; border: 1px solid var(--c-border-strong);
    border-radius: var(--r-sm); font-family: var(--ad-font); font-size: var(--fs-sm);
    color: var(--c-text); background: var(--c-surface); outline: none;
    transition: border-color var(--dur), box-shadow var(--dur);
}
.ad-nl-sidebar__input:focus { border-color: var(--ad-primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.ad-nl-sidebar__btn {
    width: 100%; padding: 9px 16px; background: var(--ad-primary); color: #fff;
    border: none; border-radius: var(--r-sm); font-family: var(--ad-font);
    font-size: var(--fs-sm); font-weight: var(--fw-semi); cursor: pointer; transition: background var(--dur);
}
.ad-nl-sidebar__btn:hover { background: #1D4ED8; }

/* ─── 11. Newsletter — Footer ─── */
.ad-footer__newsletter { background: var(--c-text); border-bottom: 1px solid rgba(255,255,255,0.06); }
.ad-nl-footer { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-8); padding: var(--sp-8) 0; }
.ad-nl-footer__title { font-size: var(--fs-base); font-weight: var(--fw-bold); color: #fff; margin-bottom: 2px; }
.ad-nl-footer__desc { font-size: var(--fs-sm); color: rgba(255,255,255,0.5); }
.ad-nl-footer__form { flex-shrink: 0; }
.ad-nl-footer__fields { display: flex; gap: var(--sp-2); }
.ad-nl-footer__input {
    width: 260px; padding: 10px 16px; background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12); border-radius: var(--r-sm); color: #fff;
    font-family: var(--ad-font); font-size: var(--fs-sm); outline: none;
    transition: border-color var(--dur), background var(--dur);
}
.ad-nl-footer__input:focus { border-color: var(--ad-primary); background: rgba(255,255,255,0.12); }
.ad-nl-footer__input::placeholder { color: rgba(255,255,255,0.35); }
.ad-nl-footer__btn {
    display: inline-flex; align-items: center; gap: 6px; padding: 10px 22px;
    background: var(--ad-primary); color: #fff; border: none; border-radius: var(--r-sm);
    font-family: var(--ad-font); font-size: var(--fs-sm); font-weight: var(--fw-semi);
    cursor: pointer; transition: background var(--dur), transform var(--dur); white-space: nowrap;
}
.ad-nl-footer__btn:hover { background: #3B82F6; transform: translateY(-1px); }
.ad-nl-footer .ad-nl__feedback { color: rgba(255,255,255,0.6); }
.ad-nl-footer .ad-nl__feedback.is-success { color: #34D399; }
.ad-nl-footer .ad-nl__feedback.is-error { color: #FB7185; }

/* ─── 11b. Category Filter (Homepage) ─── */
.ad-cat-filter { display: flex; gap: var(--sp-2); flex-wrap: wrap; margin-top: var(--sp-4); }
.ad-cat-filter__btn {
    display: inline-flex; align-items: center; padding: 6px 16px;
    background: var(--c-surface); color: var(--c-text-2);
    font-family: var(--ad-font); font-size: var(--fs-sm); font-weight: var(--fw-medium);
    border: 1px solid var(--c-border-strong); border-radius: var(--r-full);
    cursor: pointer; transition: all var(--dur) var(--ease);
    white-space: nowrap;
}
.ad-cat-filter__btn:hover { border-color: var(--ad-primary); color: var(--ad-primary); }
.ad-cat-filter__btn[aria-pressed="true"] {
    background: var(--ad-primary); color: var(--c-text-inv);
    border-color: var(--ad-primary);
}
.ad-cat-filter__btn[aria-pressed="true"]:hover { opacity: 0.85; }

/* ─── 12. Content Grid & Cards ─── */
.ad-content-section { padding: var(--sp-16) 0; }
.ad-section-header { margin-bottom: var(--sp-8); padding-bottom: var(--sp-4); border-bottom: 1px solid var(--c-border); }
.ad-section-header__title { font-size: var(--fs-xl); font-weight: var(--fw-bold); }
.ad-grid { display: grid; gap: var(--sp-6); }
.ad-grid--2col { grid-template-columns: repeat(2, 1fr); }
.ad-grid--3col { grid-template-columns: repeat(3, 1fr); }
.ad-card {
    border-radius: var(--r-md); overflow: hidden; background: var(--c-surface);
    border: 1px solid var(--c-border); display: flex; flex-direction: column;
    transition: transform var(--dur-md) var(--ease), box-shadow var(--dur-md);
}
.ad-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.ad-card__image-link { display: block; overflow: hidden; aspect-ratio: 16 / 10; }
.ad-card__image { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.ad-card:hover .ad-card__image { transform: scale(1.04); }
.ad-card__image--placeholder { display: flex; align-items: center; justify-content: center; background: var(--c-surface-subtle); }
.ad-card__body { padding: var(--sp-5); flex: 1; display: flex; flex-direction: column; }
.ad-card__category { display: inline-block; font-size: var(--fs-xs); font-weight: var(--fw-bold); text-transform: uppercase; letter-spacing: 0.05em; color: var(--ad-primary); margin-bottom: var(--sp-2); }
.ad-card__title { font-size: var(--fs-base); font-weight: var(--fw-semi); line-height: var(--lh-snug); margin-bottom: var(--sp-2); }
.ad-card__title a { color: var(--c-text); }
.ad-card__title a:hover { color: var(--ad-primary); }
.ad-card__excerpt { font-size: var(--fs-sm); color: var(--c-text-2); line-height: var(--lh-normal); flex: 1; }

/* ─── 13. Pagination ─── */
.ad-pagination { text-align: center; margin-top: var(--sp-12); }
.ad-pagination__btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 13px 36px; background: var(--ad-primary); color: #fff;
    border: none; border-radius: var(--r-full);
    font-family: var(--ad-font); font-size: var(--fs-sm); font-weight: var(--fw-semi);
    cursor: pointer; transition: all var(--dur) var(--ease);
}
.ad-pagination__btn:hover { background: var(--c-text); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.ad-pagination__btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.ad-pagination__btn--loading::after {
    content: ''; width: 16px; height: 16px;
    border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff;
    border-radius: 50%; animation: ad-spin 0.6s linear infinite;
}
@keyframes ad-spin { to { transform: rotate(360deg); } }

/* ─── 14. Layout (Sidebar + Content) ─── */
.ad-layout { display: grid; grid-template-columns: var(--sidebar-w) 1fr; gap: var(--sp-12); padding-top: var(--sp-12); padding-bottom: var(--sp-16); align-items: start; }

/* ─── 15. Sidebar ─── */
.ad-sidebar { position: sticky; top: calc(var(--header-h) + var(--sp-6)); }
.ad-sidebar__block { margin-bottom: var(--sp-6); }
.ad-sidebar__heading, .ad-sidebar-cats__title {
    font-size: var(--fs-xs); font-weight: var(--fw-bold);
    text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--c-text-3); margin-bottom: var(--sp-3);
}
.ad-sidebar-cats { margin-bottom: var(--sp-6); }
.ad-sidebar-cats__list { list-style: none; }
.ad-sidebar-cats__item a {
    display: flex; justify-content: space-between; align-items: center;
    padding: 8px 12px; color: var(--c-text-2); font-size: var(--fs-sm);
    border-radius: var(--r-sm); transition: background var(--dur), color var(--dur);
}
.ad-sidebar-cats__item a:hover, .ad-sidebar-cats__item--active a { background: var(--c-surface-subtle); color: var(--ad-primary); }
.ad-sidebar-cats__count { font-size: var(--fs-xs); color: var(--c-text-3); }
.ad-sidebar-search__form {
    display: flex; border: 1px solid var(--c-border-strong);
    border-radius: var(--r-sm); overflow: hidden; transition: border-color var(--dur), box-shadow var(--dur);
}
.ad-sidebar-search__form:focus-within { border-color: var(--ad-primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.ad-sidebar-search__input { flex: 1; padding: 9px 14px; border: none; font-family: var(--ad-font); font-size: var(--fs-sm); color: var(--c-text); background: transparent; outline: none; }
.ad-sidebar-search__btn { padding: 9px 12px; background: none; border: none; color: var(--c-text-3); cursor: pointer; transition: color var(--dur); }
.ad-sidebar-search__btn:hover { color: var(--ad-primary); }
.ad-sidebar-cta {
    display: block; width: 100%; padding: 10px 16px;
    background: var(--cta-bg, var(--ad-accent)); color: var(--c-text-inv);
    font-size: var(--fs-sm); font-weight: var(--fw-semi); text-align: center;
    border-radius: var(--r-sm); margin-bottom: var(--sp-2);
    transition: opacity var(--dur), transform var(--dur);
}
.ad-sidebar-cta:hover { color: #fff; opacity: 0.9; transform: translateY(-1px); }

/* ─── 16. Single Post ─── */
.ad-single__hero { border-radius: var(--r-lg); overflow: hidden; margin-bottom: var(--sp-8); }
.ad-single__image { width: 100%; }
.ad-single__header { margin-bottom: var(--sp-8); }
.ad-single__categories { display: flex; gap: 6px; margin-bottom: var(--sp-3); flex-wrap: wrap; }
.ad-single__cat {
    display: inline-block; padding: 3px 12px; background: var(--ad-primary); color: #fff;
    font-size: var(--fs-xs); font-weight: var(--fw-semi);
    text-transform: uppercase; letter-spacing: 0.05em; border-radius: var(--r-full);
}
.ad-single__cat:hover { color: #fff; opacity: 0.85; }
.ad-single__title { font-size: var(--fs-2xl); font-weight: var(--fw-extra); line-height: var(--lh-tight); margin-bottom: var(--sp-4); }
.ad-single__meta { display: flex; gap: var(--sp-5); color: var(--c-text-3); font-size: var(--fs-sm); align-items: center; flex-wrap: wrap; }
.ad-single__meta svg { margin-right: 4px; vertical-align: -2px; }
.ad-single__content { font-size: var(--fs-md); line-height: var(--lh-relaxed); }
.ad-single__content h2 { font-size: var(--fs-xl); font-weight: var(--fw-bold); margin: 40px 0 16px; }
.ad-single__content h3 { font-size: var(--fs-lg); font-weight: var(--fw-semi); margin: 32px 0 12px; }
.ad-single__content p { margin-bottom: var(--sp-5); }
.ad-single__content ul, .ad-single__content ol { margin: 0 0 var(--sp-5) var(--sp-6); }
.ad-single__content li { margin-bottom: var(--sp-2); }
.ad-single__content blockquote {
    border-left: 3px solid var(--ad-primary); padding: var(--sp-4) var(--sp-6);
    margin: var(--sp-6) 0; background: var(--c-surface-subtle);
    border-radius: 0 var(--r-sm) var(--r-sm) 0; font-style: italic; color: var(--c-text-2);
}
.ad-single__content img { border-radius: var(--r-sm); margin: var(--sp-6) 0; }
.ad-single__content a { color: var(--ad-primary); text-decoration: underline; text-underline-offset: 3px; }
.ad-single__content pre, .ad-single__content code { background: var(--c-surface-subtle); border-radius: var(--r-sm); font-size: 0.9em; }
.ad-single__content pre { padding: var(--sp-5); overflow-x: auto; margin-bottom: var(--sp-5); }
.ad-single__content code { padding: 2px 6px; }
.ad-single__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: var(--sp-8); padding-top: var(--sp-6); border-top: 1px solid var(--c-border); }
.ad-single__tag { padding: 4px 12px; background: var(--c-surface-subtle); color: var(--c-text-2); font-size: var(--fs-xs); border-radius: var(--r-full); transition: background var(--dur), color var(--dur); }
.ad-single__tag:hover { background: var(--ad-primary); color: #fff; }
.ad-share { margin-top: var(--sp-8); padding: var(--sp-6) 0; border-top: 1px solid var(--c-border); }
.ad-share__title { font-size: var(--fs-sm); font-weight: var(--fw-semi); margin-bottom: var(--sp-3); color: var(--c-text-2); }
.ad-share__buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.ad-share__btn {
    display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px;
    border-radius: var(--r-full); font-size: var(--fs-xs); font-weight: var(--fw-semi); color: #fff;
    transition: opacity var(--dur), transform var(--dur);
}
.ad-share__btn:hover { color: #fff; opacity: 0.85; transform: translateY(-1px); }
.ad-share__btn--facebook { background: #1877F2; }
.ad-share__btn--x { background: #000; }
.ad-share__btn--linkedin { background: #0A66C2; }
.ad-share__btn--email { background: var(--c-text-2); }
.ad-related { margin-top: var(--sp-12); padding-top: var(--sp-8); border-top: 1px solid var(--c-border); }
.ad-related__title { font-size: var(--fs-lg); font-weight: var(--fw-bold); margin-bottom: var(--sp-6); }

/* ─── 17. Archive/Category Header ─── */
.ad-archive-header { margin-bottom: var(--sp-8); padding-bottom: var(--sp-4); border-bottom: 1px solid var(--c-border); }
.ad-archive-header__title { font-size: var(--fs-2xl); font-weight: var(--fw-bold); }
.ad-archive-header__title span { color: var(--ad-primary); }
.ad-archive-header__desc { color: var(--c-text-2); font-size: var(--fs-sm); margin-top: var(--sp-1); }

/* ─── 18. Page ─── */
.ad-page { padding: var(--sp-12) 0; }
.ad-page__inner { max-width: 760px; }
.ad-page__title { font-size: var(--fs-3xl); font-weight: var(--fw-extra); margin-bottom: var(--sp-8); }
.ad-page__content { font-size: var(--fs-md); line-height: var(--lh-relaxed); }
.ad-page__content p { margin-bottom: var(--sp-5); }
.ad-page__content h2 { font-size: var(--fs-xl); margin: 36px 0 16px; font-weight: var(--fw-bold); }

/* ─── 18b. Contact Form 7 Compatibility ─── */
.wpcf7 { max-width: 100%; }
.wpcf7-form p { margin-bottom: var(--sp-5); }
.wpcf7-form label { display: block; font-size: var(--fs-sm); font-weight: var(--fw-semi); color: var(--c-text); margin-bottom: var(--sp-1); }
.wpcf7-form-control:not(.wpcf7-submit) {
    width: 100%; padding: 12px 16px;
    border: 1px solid var(--c-border-strong); border-radius: var(--r-sm);
    font-family: var(--ad-font); font-size: var(--fs-sm); color: var(--c-text);
    background: var(--c-surface); outline: none;
    transition: border-color var(--dur), box-shadow var(--dur);
    margin-top: var(--sp-1);
}
.wpcf7-form-control:not(.wpcf7-submit):focus {
    border-color: var(--ad-primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.wpcf7-textarea { min-height: 160px; resize: vertical; }
.wpcf7-submit {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 13px 36px; background: var(--ad-primary); color: #fff;
    border: none; border-radius: var(--r-full);
    font-family: var(--ad-font); font-size: var(--fs-sm); font-weight: var(--fw-semi);
    cursor: pointer; transition: all var(--dur) var(--ease);
}
.wpcf7-submit:hover { background: var(--c-text); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.wpcf7-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.wpcf7 .wpcf7-response-output {
    margin: var(--sp-4) 0 0; padding: var(--sp-3) var(--sp-4);
    border-radius: var(--r-sm); font-size: var(--fs-sm); border: 1px solid var(--c-border-strong);
}
.wpcf7 .wpcf7-validation-errors,
.wpcf7 .wpcf7-acceptance-missing { border-color: #DC2626; color: #DC2626; background: #FEF2F2; }
.wpcf7 .wpcf7-mail-sent-ok { border-color: var(--ad-accent); color: var(--ad-accent); background: #F0FDF4; }
.wpcf7-not-valid-tip { color: #DC2626; font-size: var(--fs-xs); margin-top: var(--sp-1); display: block; }
.wpcf7-not-valid { border-color: #DC2626; }
.wpcf7 .wpcf7-spinner { margin-left: var(--sp-2); }
.wpcf7-form .wpcf7-checkbox label,
.wpcf7-form .wpcf7-radio label,
.wpcf7-form .wpcf7-acceptance label {
    display: inline-flex; align-items: center; gap: var(--sp-2);
    font-weight: var(--fw-normal); cursor: pointer;
}
.wpcf7-form select.wpcf7-form-control {
    appearance: auto; padding-right: var(--sp-8);
}

/* ─── 19. 404 / No Content ─── */
.ad-404 { padding: var(--sp-20) 0; }
.ad-404__inner { text-align: center; max-width: 500px; margin: 0 auto; }
.ad-404__icon { font-size: 3.5rem; color: var(--c-text-3); margin-bottom: var(--sp-6); }
.ad-404__title { font-size: var(--fs-2xl); font-weight: var(--fw-bold); margin-bottom: var(--sp-3); }
.ad-404__text { color: var(--c-text-2); margin-bottom: var(--sp-8); font-size: var(--fs-md); }
.ad-no-content { text-align: center; padding: var(--sp-12); grid-column: 1 / -1; }
.ad-no-content__title { font-size: var(--fs-lg); color: var(--c-text-2); margin-bottom: var(--sp-2); }
.ad-no-content__text { color: var(--c-text-3); margin-bottom: var(--sp-6); }

/* ─── 20. Footer ─── */
.ad-footer { background: var(--c-text); color: rgba(255,255,255,0.6); }
.ad-footer__main { padding: var(--sp-12) 0; }
.ad-footer__grid { display: grid; grid-template-columns: 1.6fr 1.4fr 0.8fr; gap: var(--sp-10); }
.ad-footer__col--brand { display: flex; flex-direction: column; gap: var(--sp-3); }
.ad-footer__logo img { max-height: 32px; width: auto; filter: brightness(0) invert(1); }
.ad-footer__name { display: block; font-size: var(--fs-lg); font-weight: var(--fw-bold); color: #fff; }
.ad-footer__name:hover { color: var(--ad-primary); }
.ad-footer__tagline { font-size: var(--fs-sm); font-style: italic; color: rgba(255,255,255,0.35); }
.ad-footer__desc { font-size: var(--fs-sm); line-height: var(--lh-normal); color: rgba(255,255,255,0.4); }
.ad-footer__heading {
    font-size: var(--fs-xs); font-weight: var(--fw-bold);
    text-transform: uppercase; letter-spacing: 0.06em;
    color: #fff; margin-bottom: var(--sp-4);
}
.ad-footer__links { list-style: none; }
.ad-footer__links li { margin-bottom: var(--sp-2); }
.ad-footer__links a { color: rgba(255,255,255,0.5); font-size: var(--fs-sm); transition: color var(--dur); }
.ad-footer__links a:hover { color: #fff; }
/* Two-column layout for Explore (handles 7+ categories gracefully) */
.ad-footer__links--2col { columns: 2; column-gap: var(--sp-6); }
.ad-footer__links--2col li { break-inside: avoid; }
.ad-footer__bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: var(--sp-5) 0; }
.ad-footer__bottom-inner { text-align: center; }
.ad-footer__copyright { font-size: var(--fs-xs); color: rgba(255,255,255,0.3); }

/* ─── 21. Cookie Consent ─── */
.ad-cookie { position: fixed; bottom: 0; left: 0; right: 0; z-index: 9999; background: var(--c-text); color: rgba(255,255,255,0.7); box-shadow: 0 -4px 20px rgba(0,0,0,0.15); display: none; }
.ad-cookie__inner { max-width: var(--max-w); margin: 0 auto; padding: var(--sp-5) var(--sp-6); display: flex; align-items: center; gap: var(--sp-5); flex-wrap: wrap; }
.ad-cookie__text { flex: 1; font-size: var(--fs-sm); line-height: var(--lh-snug); min-width: 280px; }
.ad-cookie__actions { display: flex; gap: 8px; flex-shrink: 0; }
.ad-cookie__btn { padding: 8px 22px; border: none; border-radius: var(--r-full); font-family: var(--ad-font); font-size: var(--fs-sm); font-weight: var(--fw-semi); cursor: pointer; transition: all var(--dur); }
.ad-cookie__btn--accept { background: var(--ad-primary); color: #fff; }
.ad-cookie__btn--accept:hover { background: var(--ad-accent); }
.ad-cookie__btn--decline { background: transparent; color: rgba(255,255,255,0.5); border: 1px solid rgba(255,255,255,0.15); }
.ad-cookie__btn--decline:hover { border-color: rgba(255,255,255,0.3); color: #fff; }

/* ─── 22. Comments ─── */
.ad-comments-area { margin-top: var(--sp-12); padding-top: var(--sp-8); border-top: 1px solid var(--c-border); }
.ad-comments-area__title { font-size: var(--fs-lg); font-weight: var(--fw-bold); margin-bottom: var(--sp-6); }
.ad-comments-list { list-style: none; margin-bottom: var(--sp-8); }
.ad-comments-list .comment { padding: var(--sp-5) 0; border-bottom: 1px solid var(--c-border); }
.ad-comment-form textarea { width: 100%; border: 1px solid var(--c-border-strong); border-radius: var(--r-sm); padding: 14px; font-family: var(--ad-font); font-size: var(--fs-sm); resize: vertical; outline: none; transition: border-color var(--dur); }
.ad-comment-form textarea:focus { border-color: var(--ad-primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.ad-comment-form .form-submit input { display: inline-flex; padding: 12px 28px; background: var(--ad-primary); color: #fff; border: none; border-radius: var(--r-full); font-family: var(--ad-font); font-weight: var(--fw-semi); cursor: pointer; margin-top: var(--sp-3); transition: background var(--dur); }
.ad-comment-form .form-submit input:hover { background: var(--c-text); }

/* ═══════════════════════════════════════════
 * 23. IMMERSIVE READING MODE v2
 *
 * Full-screen overlay · Progress bar · Serif toggle
 * Light / Book / Dark themes · Font size control
 * Claude-quality immersive experience
 * ═══════════════════════════════════════════ */
.ad-reading-overlay {
    position: fixed; inset: 0; z-index: 10000;
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: opacity 0.4s var(--ease), visibility 0.4s;
    display: flex; flex-direction: column;
}
.ad-reading-overlay.is-active {
    opacity: 1; visibility: visible; pointer-events: auto;
}

/* Progress bar */
.ad-rm-progress {
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: rgba(128,128,128,0.1); z-index: 20;
}
.ad-rm-progress__bar {
    height: 100%; width: 0;
    background: var(--ad-primary);
    transition: width 0.1s linear;
    border-radius: 0 2px 2px 0;
}

/* Toolbar */
.ad-reading-toolbar {
    position: relative; z-index: 15;
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--sp-3) var(--sp-6); min-height: 52px;
    border-bottom: 1px solid transparent; flex-shrink: 0;
}
.ad-reading-toolbar__left { display: flex; align-items: center; gap: var(--sp-3); flex-shrink: 0; }
.ad-reading-toolbar__right { flex-shrink: 0; }
.ad-reading-toolbar__center { display: flex; align-items: center; gap: var(--sp-2); }
.ad-reading-toolbar__label { font-size: var(--fs-sm); font-weight: var(--fw-semi); opacity: 0.5; }
.ad-rm-time { font-size: var(--fs-xs); opacity: 0.35; font-weight: var(--fw-medium); }

/* Toolbar buttons */
.ad-rm-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 34px; height: 34px; border-radius: var(--r-full);
    border: 1px solid rgba(128,128,128,0.15); background: transparent;
    cursor: pointer; transition: all var(--dur);
}
.ad-rm-btn:hover { background: rgba(128,128,128,0.08); }
.ad-rm-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.ad-rm-btn:disabled:hover { background: transparent; }
.ad-rm-exit { width: auto; padding: 0 14px; gap: 6px; font-family: var(--ad-font); font-size: var(--fs-sm); font-weight: var(--fw-semi); }
.ad-rm-font-label { font-size: var(--fs-xs); font-weight: var(--fw-bold); min-width: 24px; text-align: center; opacity: 0.45; font-variant-numeric: tabular-nums; }
.ad-rm-sep { width: 1px; height: 20px; background: rgba(128,128,128,0.15); margin: 0 var(--sp-1); }

/* Serif / sans toggle button */
.ad-rm-btn--type { font-family: Georgia, 'Times New Roman', serif; font-size: var(--fs-xs); font-weight: var(--fw-bold); letter-spacing: -0.03em; }
.ad-rm-btn--type.is-active { border-color: var(--ad-primary); background: rgba(37,99,235,0.08); color: var(--ad-primary); }

/* Theme buttons */
.ad-rm-theme-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 34px; height: 34px; border-radius: var(--r-full);
    border: 2px solid transparent; background: transparent;
    cursor: pointer; transition: all var(--dur);
}
.ad-rm-theme-btn:hover { border-color: rgba(128,128,128,0.25); }
.ad-rm-theme-btn.is-active { border-color: var(--ad-primary); background: rgba(37,99,235,0.08); }

/* Scroll wrapper */
.ad-reading-scroll {
    flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch;
}

/* Reading content container */
.ad-reading-content {
    padding: var(--sp-12) var(--sp-6) var(--sp-20);
    max-width: 720px; width: 100%; margin: 0 auto;
}
.ad-rm-title { font-size: 2rem; font-weight: var(--fw-extra); line-height: var(--lh-tight); margin-bottom: var(--sp-4); }
.ad-rm-meta { font-size: var(--fs-sm); opacity: 0.4; margin-bottom: var(--sp-10); display: flex; gap: var(--sp-5); align-items: center; flex-wrap: wrap; }
.ad-rm-body { line-height: var(--lh-relaxed); }
.ad-rm-body h2 { font-size: 1.5em; font-weight: var(--fw-bold); margin: 2em 0 0.6em; }
.ad-rm-body h3 { font-size: 1.25em; font-weight: var(--fw-semi); margin: 1.6em 0 0.5em; }
.ad-rm-body p { margin-bottom: 1.2em; }
.ad-rm-body ul, .ad-rm-body ol { margin: 0 0 1.2em 1.5em; }
.ad-rm-body li { margin-bottom: 0.4em; }
.ad-rm-body blockquote { border-left: 3px solid currentColor; padding: 1em 1.5em; margin: 1.5em 0; opacity: 0.8; font-style: italic; border-radius: 0 var(--r-sm) var(--r-sm) 0; }
.ad-rm-body img { border-radius: var(--r-sm); margin: 1.5em 0; max-width: 100%; }
.ad-rm-body a { text-decoration: underline; text-underline-offset: 3px; }

/* Serif mode (applied to overlay) */
.ad-rm--serif .ad-reading-content { font-family: Georgia, 'Noto Serif', 'Times New Roman', serif; }
.ad-rm--serif .ad-rm-title { font-family: Georgia, 'Noto Serif', 'Times New Roman', serif; }

/* Reading mode — LIGHT */
.ad-reading-overlay[data-theme="light"] { background: #FFFFFF; color: #1a1a1a; }
.ad-reading-overlay[data-theme="light"] .ad-reading-toolbar { background: #FFFFFF; border-bottom-color: #f0f0f0; }
.ad-reading-overlay[data-theme="light"] .ad-rm-btn { color: #555; }
.ad-reading-overlay[data-theme="light"] .ad-rm-theme-btn { color: #555; }
.ad-reading-overlay[data-theme="light"] .ad-rm-body a { color: var(--ad-primary); }
.ad-reading-overlay[data-theme="light"] .ad-rm-progress__bar { background: var(--ad-primary); }

/* Reading mode — SEPIA (Book) */
.ad-reading-overlay[data-theme="sepia"] { background: #F4ECD8; color: #3B2F1E; }
.ad-reading-overlay[data-theme="sepia"] .ad-reading-toolbar { background: #F4ECD8; border-bottom-color: #E5D9C3; }
.ad-reading-overlay[data-theme="sepia"] .ad-rm-btn { color: #5C4A32; border-color: rgba(92,74,50,0.15); }
.ad-reading-overlay[data-theme="sepia"] .ad-rm-theme-btn { color: #5C4A32; }
.ad-reading-overlay[data-theme="sepia"] .ad-rm-theme-btn.is-active { border-color: #8B6914; background: rgba(139,105,20,0.08); }
.ad-reading-overlay[data-theme="sepia"] .ad-rm-btn--type.is-active { border-color: #8B6914; background: rgba(139,105,20,0.08); color: #8B6914; }
.ad-reading-overlay[data-theme="sepia"] .ad-rm-body a { color: #8B5A2B; }
.ad-reading-overlay[data-theme="sepia"] .ad-rm-body blockquote { background: rgba(0,0,0,0.04); }
.ad-reading-overlay[data-theme="sepia"] .ad-rm-progress__bar { background: #A67B3C; }
.ad-reading-overlay[data-theme="sepia"] .ad-rm-time { color: #8B7355; }

/* Reading mode — DARK */
.ad-reading-overlay[data-theme="dark"] { background: #111111; color: #CCCCCC; }
.ad-reading-overlay[data-theme="dark"] .ad-reading-toolbar { background: #111111; border-bottom-color: #222; }
.ad-reading-overlay[data-theme="dark"] .ad-rm-btn { color: #999; border-color: #333; }
.ad-reading-overlay[data-theme="dark"] .ad-rm-theme-btn { color: #999; }
.ad-reading-overlay[data-theme="dark"] .ad-rm-theme-btn.is-active { border-color: #6B9AFF; background: rgba(107,154,255,0.1); }
.ad-reading-overlay[data-theme="dark"] .ad-rm-btn--type.is-active { border-color: #6B9AFF; background: rgba(107,154,255,0.1); color: #6B9AFF; }
.ad-reading-overlay[data-theme="dark"] .ad-rm-body a { color: #6B9AFF; }
.ad-reading-overlay[data-theme="dark"] .ad-rm-body blockquote { background: rgba(255,255,255,0.04); }
.ad-reading-overlay[data-theme="dark"] .ad-rm-progress__bar { background: #6B9AFF; }
.ad-reading-overlay[data-theme="dark"] .ad-rm-time { color: #666; }

/* ─── 24. Dark Mode (site-level, separate from reading mode) ─── */
body.ad-dark-mode {
    --c-bg: #0C1222; --c-surface: #151E30; --c-surface-raised: #1A2540;
    --c-surface-subtle: #111B2E; --c-border: #1E293B; --c-border-strong: #2D3B50;
    --c-text: #E8EDF5; --c-text-2: #94A3B8; --c-text-3: #64748B; --c-text-inv: #FFFFFF;
    color-scheme: dark;
}
body.ad-dark-mode .ad-header { background: rgba(12,18,34,0.92); border-bottom-color: var(--c-border); }
body.ad-dark-mode .ad-drawer { background: var(--c-surface); }
body.ad-dark-mode .ad-nl__inner { background: linear-gradient(135deg, #111B2E, #0F1F1C); border-color: var(--c-border); }
body.ad-dark-mode .ad-nl-sidebar { background: linear-gradient(135deg, #111B2E, #0F1F1C); border-color: var(--c-border); }
body.ad-dark-mode .ad-nl__input, body.ad-dark-mode .ad-nl-sidebar__input { background: var(--c-surface-raised); border-color: var(--c-border-strong); color: var(--c-text); }
body.ad-dark-mode .ad-footer { background: #070C18; }
body.ad-dark-mode .ad-footer__newsletter { background: #070C18; }
body.ad-dark-mode .ad-sidebar-search__input { color: var(--c-text); }
body.ad-dark-mode .wpcf7-form-control:not(.wpcf7-submit) { background: var(--c-surface-raised); border-color: var(--c-border-strong); color: var(--c-text); }
body.ad-dark-mode .wpcf7 .wpcf7-validation-errors,
body.ad-dark-mode .wpcf7 .wpcf7-acceptance-missing { background: rgba(220,38,38,0.1); }
body.ad-dark-mode .wpcf7 .wpcf7-mail-sent-ok { background: rgba(5,150,105,0.1); }

/* ─── 25. Responsive — Tablet (≤1024px) ─── */
@media (max-width: 1024px) {
    .ad-hero__grid { gap: var(--sp-4); }
    .ad-nl__inner { flex-direction: column; align-items: stretch; padding: var(--sp-8); gap: var(--sp-6); }
    .ad-nl__form { width: 100%; }
    .ad-nl__fields { flex-direction: row; flex-wrap: wrap; }
    .ad-nl__input-wrap { flex: 1; min-width: 140px; }
    .ad-footer__grid { grid-template-columns: 1fr 1fr; gap: var(--sp-8); }
    .ad-footer__col--brand { grid-column: 1 / -1; }
}

/* ─── 26. Responsive — Tablet Portrait (≤768px) ─── */
@media (max-width: 768px) {
    :root { --header-h: 56px; --sidebar-w: 100%; }
    .ad-header__nav { display: none; }
    .ad-header__toggle {
        display: inline-flex; align-items: center; justify-content: center;
        width: 40px; height: 40px; border: none; background: none;
        color: var(--c-text); cursor: pointer; border-radius: var(--r-sm); transition: background var(--dur);
    }
    .ad-header__toggle:hover { background: var(--c-surface-subtle); }
    .ad-header__toggle .ad-icon--close { display: none; }
    .ad-header__toggle[aria-expanded="true"] .ad-icon--menu { display: none; }
    .ad-header__toggle[aria-expanded="true"] .ad-icon--close { display: block; }
    .ad-header__ctas { display: none; }
    .ad-social--header { display: none; }
    .ad-hero { padding: var(--sp-6) 0; }
    .ad-hero__grid { grid-template-columns: 1fr; gap: var(--sp-4); }
    .ad-layout { grid-template-columns: 1fr; gap: var(--sp-8); padding-top: var(--sp-8); }
    .ad-sidebar { position: static; }
    .ad-grid--3col { grid-template-columns: repeat(2, 1fr); }
    .ad-nl-footer { flex-direction: column; align-items: stretch; gap: var(--sp-4); padding: var(--sp-6) 0; }
    .ad-nl-footer__fields { flex-direction: column; }
    .ad-nl-footer__input { width: 100%; }
    .ad-footer__grid { grid-template-columns: 1fr; gap: var(--sp-6); }
    .ad-single__title { font-size: var(--fs-xl); }
    .ad-content-section { padding: var(--sp-10) 0; }
    /* Reading mode toolbar responsive */
    .ad-reading-toolbar { padding: var(--sp-2) var(--sp-4); gap: var(--sp-2); }
    .ad-reading-toolbar__label { display: none; }
    .ad-rm-time { display: none; }
    .ad-reading-content { padding: var(--sp-8) var(--sp-4) var(--sp-16); }
    .ad-rm-title { font-size: 1.5rem; }
    .ad-rm-exit span { display: none; }
    .ad-rm-exit { width: 34px; padding: 0; }
}

/* ─── 27. Responsive — Mobile (≤480px) ─── */
@media (max-width: 480px) {
    html { font-size: 16px; }
    .ad-container { padding: 0 var(--sp-4); }
    .ad-grid--2col { grid-template-columns: 1fr; }
    .ad-grid--3col { grid-template-columns: 1fr; }
    .ad-hero__body { padding: var(--sp-4); }
    .ad-nl__inner { padding: var(--sp-6); }
    .ad-nl__fields { flex-direction: column; }
    .ad-share__btn span { display: none; }
    .ad-share__btn { padding: 8px 12px; }
    .ad-cookie__inner { flex-direction: column; align-items: stretch; }
    .ad-cookie__actions { justify-content: stretch; }
    .ad-cookie__btn { flex: 1; text-align: center; }
    .ad-single__title { font-size: var(--fs-lg); }
    .ad-footer__links--2col { columns: 1; }
    /* Reading mode: hide separators and some controls on very small screens */
    .ad-rm-sep { display: none; }
    .ad-rm-btn--type { display: none; }
    .ad-reading-toolbar__center { flex-wrap: wrap; justify-content: center; }
}

/* ─── 28. WordPress Pagination ─── */
.ad-wp-pagination { margin-top: var(--sp-10); text-align: center; }
.ad-wp-pagination .nav-links { display: flex; justify-content: center; gap: 4px; flex-wrap: wrap; }
.ad-wp-pagination .page-numbers {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 40px; height: 40px; padding: 0 12px;
    border-radius: var(--r-sm); font-size: var(--fs-sm); font-weight: var(--fw-medium);
    color: var(--c-text-2); background: var(--c-surface); border: 1px solid var(--c-border-strong);
    transition: all var(--dur) var(--ease);
}
.ad-wp-pagination .page-numbers:hover { background: var(--c-surface-subtle); color: var(--ad-primary); border-color: var(--ad-primary); }
.ad-wp-pagination .page-numbers.current { background: var(--ad-primary); color: #fff; border-color: var(--ad-primary); }

/* ─── 29. Widgets ─── */
.ad-widget { margin-bottom: var(--sp-6); }
.ad-widget__title { font-size: var(--fs-xs); font-weight: var(--fw-bold); text-transform: uppercase; letter-spacing: 0.06em; color: var(--c-text-3); margin-bottom: var(--sp-3); }
.ad-widget ul { list-style: none; }
.ad-widget li { margin-bottom: var(--sp-1); }
.ad-widget li a { display: block; padding: 6px 10px; color: var(--c-text-2); font-size: var(--fs-sm); border-radius: var(--r-sm); transition: background var(--dur), color var(--dur); }
.ad-widget li a:hover { background: var(--c-surface-subtle); color: var(--ad-primary); }
.ad-sidebar-widgets { border-top: 1px solid var(--c-border); padding-top: var(--sp-6); }

/* ─── 30. Print ─── */
@media print {
    .ad-header, .ad-footer, .ad-sidebar, .ad-cookie, .ad-share, .ad-related,
    .ad-pagination, .ad-comments, .ad-nl, .ad-overlay, .ad-drawer, .ad-reading-overlay,
    .ad-rm-trigger, .ad-rm-progress, .ad-cat-filter { display: none !important; }
    body { font-size: 12pt; color: #000; background: #fff; }
    a { color: #000; text-decoration: underline; }
}