/*
Theme Name: Nisa Tektaş
Theme URI: https://nisatektas.com
Author: Nisa Tektaş
Description: Koyu editorial tasarım — kitap içerik türü ve sayfa-sayfa okuyucu ile birlikte.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 7.0
Requires PHP: 8.0
License: GNU General Public License v2 or later
Text Domain: nisatektas
*/

/* ============ TASARIM SİSTEMİ ============ */
:root {
    --bg: #120f0d;
    --bg-soft: #1b1714;
    --panel: rgba(38, 30, 24, 0.88);
    --panel-strong: #221d19;
    --border: rgba(255, 255, 255, 0.08);
    --text: #f7f3ef;
    --muted: #d2c4b4;
    --warm: #d8b08b;
    --gold: #d4a56a;
    --rose: #a85346;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
    --max-width: 1240px;
    --serif: 'Cormorant Garamond', Georgia, serif;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    background:
        radial-gradient(circle at top left, rgba(168, 94, 63, 0.18), transparent 30%),
        radial-gradient(circle at bottom right, rgba(212, 165, 106, 0.1), transparent 30%),
        var(--bg);
    color: var(--text);
    font-family: var(--sans);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.05; letter-spacing: -0.01em; }
p { color: var(--muted); }
.entry-content p { margin: 0 0 1.1rem; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: 4.5rem 0; }
.section.alt { background: rgba(255, 255, 255, 0.02); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* ============ TİPOGRAFİ YARDIMCILARI ============ */
.eyebrow {
    display: inline-block;
    font-size: .72rem;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--warm);
    margin: 0 0 1rem;
}
.section-heading { margin-bottom: 2.2rem; }
.section-heading.split { display: flex; align-items: end; justify-content: space-between; gap: 1rem; }
.section-heading h2 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); margin: 0; }
.section-heading p { margin: .5rem 0 0; color: var(--muted); max-width: 60ch; }
.text-accent { color: var(--warm); }
.text-link { color: var(--warm); text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; }
.text-link:hover { color: var(--gold); }
.card-link { display: inline-block; margin-top: 1.1rem; color: var(--warm); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; font-size: .72rem; }
.card-link:hover { color: var(--gold); }

/* ============ BUTONLAR ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    border-radius: 999px;
    padding: .85rem 1.6rem;
    font-weight: 600;
    letter-spacing: .03em;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .2s ease;
    font-size: .95rem;
}
.btn-primary { background: linear-gradient(135deg, var(--gold), var(--warm)); color: #1a120e; box-shadow: var(--shadow); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-outline { background: transparent; border-color: rgba(216, 176, 139, .5); color: var(--warm); }
.btn-outline:hover { background: rgba(216, 176, 139, .1); transform: translateY(-2px); }
.btn-sm { padding: .5rem 1rem; font-size: .85rem; }
.btn:focus-visible { outline: 2px solid var(--warm); outline-offset: 2px; }

/* ============ HEADER ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(18, 15, 13, .82);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-top: .8rem; padding-bottom: .8rem; }
.brand-name { font-family: var(--serif); font-size: 1.5rem; font-weight: 700; color: var(--text); }
.brand-tagline { display: block; font-size: .7rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 1.4rem; align-items: center; flex-wrap: wrap; }
.main-nav a { color: var(--muted); font-size: .92rem; }
.main-nav a:hover, .main-nav a.current-menu-item { color: var(--warm); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); color: var(--text); border-radius: 10px; padding: .4rem .7rem; cursor: pointer; }

/* ============ HERO (ana sayfa) ============ */
.hero { padding: clamp(3rem, 8vw, 5.5rem) 0; }
.hero .container { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 3rem; }
.hero h1 { font-size: clamp(3rem, 7vw, 6rem); margin: 0 0 1.2rem; }
.hero p.lead { font-size: 1.2rem; color: var(--muted); max-width: 50ch; margin: 0 0 2rem; }
.hero-actions { display: flex; gap: .9rem; flex-wrap: wrap; }
.hero-visual img { border-radius: 24px; box-shadow: var(--shadow); }

/* ============ KİTAP GRID ============ */
.book-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.5rem; }
.book-card {
    position: relative; aspect-ratio: 2 / 3;
    border-radius: 16px; overflow: hidden;
    background: rgba(255, 255, 255, .04);
    border: 1px solid var(--border);
    transition: transform .25s ease, border-color .25s ease;
}
.book-card:hover { transform: translateY(-4px); border-color: rgba(216, 176, 139, .45); }
.book-cover { position: absolute; inset: 0; display: block; }
.book-cover img { width: 100%; height: 100%; object-fit: cover; object-position: center; display: block; transition: transform .5s ease; }
.book-card:hover .book-cover img { transform: scale(1.06); }
.book-overlay {
    position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end;
    padding: 1rem; background: linear-gradient(180deg, rgba(18, 15, 13, 0) 30%, rgba(18, 15, 13, .94) 100%);
    opacity: 0; transition: opacity .3s ease;
}
.book-card:hover .book-overlay, .book-card:focus-within .book-overlay { opacity: 1; }
.book-overlay .mini-label { margin-bottom: .2rem; }
.book-overlay-title { font-family: var(--serif); font-size: 1.45rem; font-weight: 600; color: var(--text); line-height: 1.1; margin-bottom: .5rem; }
.book-overlay .book-meta { margin-top: 0; padding-top: .4rem; justify-content: flex-start; gap: .8rem; }
.book-overlay .btn { align-self: flex-start; margin-top: .6rem; }
@media (hover: none) {
    .book-overlay { opacity: 1; }
}
.mini-label { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--warm); margin: 0 0 .4rem; }
.book-meta { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: auto; padding-top: 1rem; color: var(--muted); font-size: .85rem; }
.book-meta span { display: inline-flex; align-items: center; gap: .3rem; }

/* ============ HAKKIMDA (teaser) ============ */
.about-teaser-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: center; }
.about-teaser-image img { width: 100%; min-height: 520px; object-fit: cover; border-radius: 28px; box-shadow: var(--shadow); }
.about-teaser-copy h2 { font-size: clamp(2.4rem, 4.5vw, 3.6rem); margin: 0 0 1rem; }
.about-teaser-copy p { max-width: 52ch; margin: 0 0 1.5rem; }

/* ============ TEK KİTAP (detay) ============ */
.book-hero { display: grid; grid-template-columns: minmax(260px, 360px) 1fr; gap: clamp(2rem, 5vw, 3.5rem); align-items: start; padding: 2rem 0; }
.book-hero-cover { position: relative; }
.book-hero-cover img { width: 100%; max-width: 340px; aspect-ratio: 2/3; object-fit: contain; border-radius: 12px; box-shadow: 0 30px 60px rgba(0, 0, 0, .55); margin: 0 auto; }
.book-hero-info h1 { font-size: clamp(2.6rem, 5vw, 4rem); margin: 0 0 1rem; }
.book-hero-meta { display: flex; flex-wrap: wrap; gap: 1.2rem; color: var(--muted); margin-bottom: 1.5rem; font-size: .95rem; }
.book-hero-meta .stars { color: var(--gold); letter-spacing: .08em; }
.book-desc { max-width: 62ch; font-size: 1.05rem; line-height: 1.8; color: var(--muted); margin-bottom: 1.8rem; }
.book-desc p { margin: 0 0 1rem; }

/* ============ OKUYUCU (sayfa-sayfa) ============ */
.reader-section { padding: 1rem 0 0; }
.reader-toolbar { display: flex; align-items: center; justify-content: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.2rem; }
.reader-nav-btn {
    display: inline-flex; align-items: center; gap: .4rem;
    background: rgba(255, 255, 255, .03); border: 1px solid var(--border); border-radius: 999px;
    padding: .5rem 1rem; color: var(--text); font-size: .88rem; font-weight: 600; cursor: pointer; transition: all .2s ease;
}
.reader-nav-btn:hover { border-color: rgba(216, 176, 139, .5); color: var(--warm); }
.reader-nav-btn.disabled { opacity: .35; pointer-events: none; }
.reader-page-indicator { display: inline-flex; align-items: center; gap: .5rem; color: var(--muted); font-size: .9rem; }
.reader-page-select { background: rgba(255,255,255,.04); border: 1px solid var(--border); color: var(--text); border-radius: 10px; padding: .35rem .6rem; }

.reader-frame { max-width: 860px; margin: 0 auto; perspective: 2200px; }
.page-sheet {
    background: linear-gradient(180deg, #f8f0e6, #efe4d2);
    color: #201911; border-radius: 20px; border: 1px solid rgba(15,10,7,.12);
    box-shadow: 0 16px 35px rgba(20,14,10,.18);
    min-height: 560px; padding: 1.6rem 2rem 2rem;
    transform-style: preserve-3d; backface-visibility: hidden; will-change: transform;
}
.page-meta { display: flex; justify-content: space-between; gap: 1rem; font-size: .74rem; letter-spacing: .11em; text-transform: uppercase; color: rgba(32,25,17,.7); padding-bottom: .75rem; border-bottom: 1px solid rgba(32,25,17,.18); margin-bottom: 1.4rem; }
.page-content { font-family: Georgia, 'Times New Roman', serif; font-size: clamp(1.1rem, 1.5vw, 1.4rem); line-height: 1.95; color: rgba(26,20,15,.92); text-align: justify; }
.page-content p { color: rgba(26,20,15,.92); margin: 0 0 1.2rem; }
.page-content h1, .page-content h2, .page-content h3 { color: #120d0b; margin: 1.2rem 0 .7rem; }

/* Sayfa çevirme animasyonu */
.reader-frame { perspective: 2200px; }
.page-sheet.flip-forward { transform-origin: left center; animation: pageFlipForward .56s cubic-bezier(.4,0,.2,1) forwards; }
.page-sheet.flip-backward { transform-origin: right center; animation: pageFlipBackward .56s cubic-bezier(.4,0,.2,1) forwards; }
.page-sheet.flip-in-forward { transform-origin: left center; animation: pageFlipInForward .5s cubic-bezier(.4,0,.2,1); }
.page-sheet.flip-in-backward { transform-origin: right center; animation: pageFlipInBackward .5s cubic-bezier(.4,0,.2,1); }
@keyframes pageFlipForward { 0%{transform:rotateY(0)} 40%{transform:rotateY(-60deg)} 100%{transform:rotateY(-180deg)} }
@keyframes pageFlipBackward { 0%{transform:rotateY(0)} 40%{transform:rotateY(60deg)} 100%{transform:rotateY(180deg)} }
@keyframes pageFlipInForward { 0%{transform:rotateY(-180deg);opacity:.6} 100%{transform:rotateY(0);opacity:1} }
@keyframes pageFlipInBackward { 0%{transform:rotateY(180deg);opacity:.6} 100%{transform:rotateY(0);opacity:1} }
@media (prefers-reduced-motion: reduce) { .page-sheet { animation: none !important; } }

/* ============ YORUMLAR ============ */
.reviews-section { max-width: 760px; margin: 3rem auto 0; }
.review-feed { display: grid; gap: 1rem; }
.review-feed-item { background: linear-gradient(180deg, rgba(39,31,25,.75), rgba(18,15,13,.6)); border: 1px solid var(--border); border-radius: 20px; padding: 1.2rem 1.3rem 1rem; }
.review-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .8rem; }
.review-author { display: flex; align-items: center; gap: .75rem; }
.review-avatar { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; border: 2px solid rgba(216,176,139,.35); }
.review-author strong { display: block; font-size: .93rem; }
.review-author span { color: var(--muted); font-size: .78rem; }
.review-stars { color: var(--gold); letter-spacing: .06em; white-space: nowrap; }
.review-body { color: var(--muted); line-height: 1.7; margin: 0; }
.review-actions { display: flex; align-items: center; gap: 1.1rem; margin-top: .8rem; padding-top: .7rem; border-top: 1px solid rgba(255,255,255,.06); color: var(--muted); font-size: .9rem; }
.review-actions .like { cursor: pointer; }
.review-actions .like:hover { color: var(--rose); }

/* ============ FOOTER ============ */
.site-footer { background: rgba(12,10,9,.9); border-top: 1px solid var(--border); margin-top: 4rem; padding: 2.5rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr 1fr; gap: 1.5rem; padding-bottom: 2rem; }
.footer-grid h3 { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--warm); margin: 0 0 .8rem; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; color: var(--muted); font-size: .9rem; }
.footer-grid ul a:hover { color: var(--warm); }
.footer-bottom { border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--muted); font-size: .85rem; padding-top: 1rem; }

/* ============ İÇERİK (WP editör) ============ */
.entry-content { max-width: 72ch; margin: 0 auto; font-size: 1.08rem; line-height: 1.85; color: var(--muted); }
.entry-content h2, .entry-content h3 { color: var(--text); margin: 1.6rem 0 .8rem; }
.entry-content img { border-radius: 14px; margin: 1.2rem 0; }
.entry-content a { color: var(--warm); text-decoration: underline; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .book-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .hero .container { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .footer-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 820px) {
    .book-hero { grid-template-columns: 1fr; text-align: center; }
    .book-hero-info { display: flex; flex-direction: column; align-items: center; }
    .book-hero-meta { justify-content: center; }
    .book-desc { max-width: 100%; text-align: left; }
}
@media (max-width: 560px) {
    .book-grid { grid-template-columns: 1fr 1fr; gap: .75rem; }
    .main-nav { position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-soft); border-bottom: 1px solid var(--border); padding: 1rem; display: none; }
    .main-nav.open { display: block; }
    .main-nav ul { flex-direction: column; gap: .8rem; align-items: flex-start; }
    .nav-toggle { display: inline-flex; }
    .footer-grid { grid-template-columns: 1fr; }
    .page-sheet { padding: 1.2rem 1.2rem 1.6rem; }
    .section { padding: 3rem 0; }
}

/* ============ HERO (nisatektas.com uyumu) ============ */
.hero .hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: center; gap: 3rem; }
.hero-copy h1 { font-size: clamp(3.4rem, 7vw, 6.4rem); max-width: 540px; line-height: .96; letter-spacing: -.02em; margin: 0 0 1.2rem; }
.hero-copy p { max-width: 560px; color: var(--muted); font-size: 1.06rem; line-height: 1.8; margin: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }

.hero-image-wrap { position: relative; border-radius: 32px; overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.hero-image-wrap::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,.12), rgba(0,0,0,.38)); z-index: 1; }
.hero-image-wrap img { width: 100%; min-height: 640px; object-fit: cover; display: block; }

/* ============ ÖNE ÇIKAN KİTAP ============ */
.section.alt { background: rgba(255,255,255,.02); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.feature-book { display: grid; grid-template-columns: .8fr 1.2fr; gap: 2rem; background: linear-gradient(135deg, rgba(83,59,49,.8), rgba(18,15,13,.8)); border: 1px solid var(--border); border-radius: 28px; padding: 1.5rem; box-shadow: var(--shadow); }
.feature-cover img { width: 100%; min-height: 420px; object-fit: contain; object-position: center; background: rgba(20,15,10,.03); border-radius: 18px; }
.feature-copy h2 { font-size: clamp(2.5rem, 4vw, 4rem); margin: 0 0 .5rem; }
.meta-line, .stat-row { color: var(--muted); font-size: .9rem; }
.feature-copy .meta-line { margin: 0 0 1rem; }
.feature-copy > p { color: var(--muted); line-height: 1.8; }
.stat-row { display: flex; flex-wrap: wrap; gap: 1rem; margin: 1rem 0 1.5rem; }
.eyebrow.light { color: rgba(255,255,255,.7); }

/* ============ BÖLÜM BAŞLIĞI ============ */
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 2.2rem; }
.section-heading h2 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); margin: 0; }
.section-heading .eyebrow { margin-bottom: .6rem; }

/* ============ RESPONSIVE HERO ============ */
@media (max-width: 1024px) {
    .hero .hero-grid { grid-template-columns: 1fr; }
    .hero-image-wrap img { min-height: 420px; }
}
@media (max-width: 820px) {
    .feature-book { grid-template-columns: 1fr; }
    .feature-cover img { min-height: 320px; }
    .hero-copy h1 { font-size: clamp(3rem, 10vw, 4.5rem); }
}
@media (max-width: 560px) {
    .hero-image-wrap { display: none; }
}

/* ============================================================
   MODERN UX EKLERİ
   ============================================================ */

/* Skip link (erişilebilirlik) */
.skip-link {
    position: absolute; left: 1rem; top: -100px; z-index: 200;
    background: var(--gold); color: #1a120e;
    padding: .6rem 1.1rem; border-radius: 8px; font-weight: 600; font-size: .9rem;
    transition: top .2s ease;
}
.skip-link:focus { top: 1rem; }

/* Genel odak stili */
:focus-visible { outline: 2px solid var(--warm); outline-offset: 3px; border-radius: 4px; }

/* Özel kaydırma çubuğu */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(216,176,139,.35); border-radius: 20px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: rgba(216,176,139,.55); }

/* Yukarı çık butonu */
.back-to-top {
    position: fixed; right: 1.4rem; bottom: 1.4rem; z-index: 90;
    width: 48px; height: 48px; border-radius: 50%;
    border: 1px solid var(--border); background: var(--panel-strong); color: var(--warm);
    font-size: 1.25rem; line-height: 1; cursor: pointer;
    opacity: 0; pointer-events: none; transform: translateY(14px);
    transition: opacity .3s ease, transform .3s ease, background .2s ease, color .2s ease;
    box-shadow: var(--shadow);
}
.back-to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover { background: var(--gold); color: #1a120e; }

/* Görünüm animasyonu (reveal) */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in-view { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============ ÖNE ÇIKAN KİTAPLAR (grid) ============ */
.featured-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1.5rem; }
.featured-card {
    display: flex; flex-direction: column;
    background: linear-gradient(180deg, rgba(39,31,25,.9), rgba(18,15,13,.83));
    border: 1px solid var(--border); border-radius: 24px; overflow: hidden; box-shadow: var(--shadow);
    transition: transform .3s ease, border-color .3s ease;
}
.featured-card:hover { transform: translateY(-5px); border-color: rgba(216,176,139,.4); }
.featured-cover img {
    width: 100%; height: 380px; object-fit: contain; object-position: center;
    background: rgba(20,15,10,.03); padding: 1rem; display: block;
    transition: transform .45s ease;
}
.featured-card:hover .featured-cover img { transform: scale(1.04); }
.featured-body { padding: 1.3rem 1.3rem 1.4rem; display: flex; flex-direction: column; flex: 1; }
.featured-body h3 { font-size: clamp(1.7rem, 2.5vw, 2.2rem); margin: 0 0 .4rem; }
.featured-body h3 a:hover { color: var(--warm); }
.featured-body .meta-line { color: var(--muted); font-size: .9rem; margin: 0 0 .7rem; }
.featured-desc { margin: 0 0 1rem; color: var(--muted); line-height: 1.7; }
.featured-body .book-meta { margin-top: auto; padding-top: 1rem; }
.featured-body .btn { align-self: flex-start; margin-top: 1.1rem; }

/* ============ OKUYUCU (modern) ============ */
.reading-progress {
    position: fixed; top: 0; left: 0; width: 100%; height: 3px; z-index: 120;
    background: transparent; pointer-events: none;
}
.reading-progress span {
    display: block; height: 100%; width: 0;
    background: linear-gradient(90deg, var(--gold), var(--warm));
    transition: width .08s linear;
}
.reader-tools { display: flex; align-items: center; gap: .8rem; margin-left: auto; }
.reader-key-hint { color: var(--muted); font-size: .75rem; opacity: .75; letter-spacing: .02em; }
.reader-font-controls { display: inline-flex; gap: .35rem; }
.reader-font-controls button {
    width: 36px; height: 36px; border-radius: 10px;
    border: 1px solid var(--border); background: rgba(255,255,255,.04);
    color: var(--text); font-weight: 700; font-size: .95rem; cursor: pointer;
    transition: all .2s ease;
}
.reader-font-controls button:hover { border-color: rgba(216,176,139,.5); color: var(--warm); background: rgba(216,176,139,.12); }
.page-content { font-size: 1rem; transition: font-size .2s ease; }

/* ============ RESPONSIVE (modern ekler) ============ */
@media (max-width: 1024px) and (min-width: 769px) {
    .featured-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 768px) {
    .featured-grid { grid-template-columns: 1fr; }
    .featured-cover img { height: 320px; }
    .reader-key-hint { display: none; }
    .reader-tools { margin-left: 0; }
}