/* Academic Notes — Fasty Blog template */
/* Fichier de styles complet, self-hosté, zéro dépendance externe */

:root {
    --bg: #fdfcf9;
    --bg-sec: #f7f5f0;
    --ink: #1f2937;
    --ink-soft: #374151;
    --gray: #6b7280;
    --gray-light: #9ca3af;
    --line: #e5e0d8;
    --line-dark: #d6d0c4;
    --accent: #1e40af;
    --accent-soft: #dbeafe;
    --accent-dark: #1e3a8a;
    --hff: 'Spectral', Georgia, serif;
    --bff: 'Inter', system-ui, sans-serif;
    --qff: 'Spectral', Georgia, serif;
    --read: 680px;
    --container: 1140px;
    --side: 220px;
    --gutter: 64px;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 17px;
}

body {
    font-family: var(--bff);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg, video {
    display: block;
    max-width: 100%;
    height: auto;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color .18s ease;
}

a:hover {
    color: var(--accent-dark);
    text-decoration: underline;
    text-underline-offset: 3px;
}

a:focus-visible, button:focus-visible, input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 2px;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--hff);
    color: var(--ink);
    line-height: 1.25;
    font-weight: 700;
}

.small-caps {
    font-family: var(--bff);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--gray);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 100000;
    padding: 10px 16px;
    background: var(--ink);
    color: #fff;
    font-weight: 600;
    font-size: .85rem;
}

.skip-link:focus {
    left: 0;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.reading-column {
    max-width: var(--read);
    margin: 0 auto;
}

/* Header */
.site-header {
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 36px 0 28px;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    color: var(--ink);
    text-decoration: none;
}

.site-logo:hover {
    color: var(--ink);
    text-decoration: none;
}

.site-logo .logo-svg svg {
    height: 44px;
    width: auto;
    max-width: 280px;
}

.site-logo img {
    max-height: 52px;
    width: auto;
}

.site-name {
    font-family: var(--hff);
    font-size: 1.7rem;
    font-weight: 700;
    letter-spacing: -.02em;
}

.site-tagline {
    font-family: var(--bff);
    font-size: .75rem;
    font-weight: 500;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--gray);
    margin-top: 4px;
}

.header-search {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--line);
    border-radius: 50%;
    color: var(--gray);
    transition: border-color .18s, color .18s;
}

.header-search:hover {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

.header-search svg {
    width: 16px;
    height: 16px;
}

/* Navigation */
.main-nav {
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 50;
}

.main-nav .container {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.nav-menu {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
}

.nav-item > a {
    display: block;
    padding: 14px 16px;
    font-family: var(--bff);
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--ink-soft);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color .18s, border-color .18s;
}

.nav-item > a:hover,
.nav-item.active > a {
    color: var(--accent);
    border-bottom-color: var(--accent);
    text-decoration: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 12px 10px;
    margin-right: auto;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--ink);
    transition: transform .25s, opacity .25s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Breadcrumb */
.breadcrumb {
    padding: 22px 0 10px;
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--gray);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.breadcrumb-item a {
    color: var(--gray);
}

.breadcrumb-item a:hover {
    color: var(--accent);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    margin-right: 10px;
    color: var(--gray-light);
}

.breadcrumb-item.active {
    color: var(--ink-soft);
}

/* Layout main + aside */
.layout {
    display: grid;
    grid-template-columns: 1fr var(--side);
    gap: var(--gutter);
    align-items: start;
}

.main-col {
    min-width: 0;
}

.aside-col {
    position: sticky;
    top: 90px;
    padding-top: 8px;
    border-left: 1px solid var(--line);
    padding-left: 24px;
}

/* Section headers */
.section-head {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 26px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.section-title {
    font-family: var(--hff);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--ink);
}

.section-number {
    font-family: var(--bff);
    font-size: .7rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: .08em;
}

/* Homepage hero */
.hero {
    padding: 42px 0 36px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 36px;
}

.hero-article {
    max-width: var(--read);
    margin: 0 auto;
    text-align: center;
}

.hero-label {
    display: inline-block;
    margin-bottom: 16px;
}

.hero-label .small-caps {
    color: var(--accent);
}

.hero-article h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 700;
    line-height: 1.18;
    margin-bottom: 16px;
}

.hero-article h2 a {
    color: var(--ink);
}

.hero-article h2 a:hover {
    color: var(--accent);
}

.hero-excerpt {
    font-size: 1.05rem;
    color: var(--ink-soft);
    max-width: 560px;
    margin: 0 auto 18px;
    line-height: 1.6;
}

.hero-meta {
    font-size: .75rem;
    color: var(--gray);
    letter-spacing: .04em;
}

.hero-meta .sep {
    margin: 0 8px;
    color: var(--line-dark);
}

.hero-meta a {
    color: var(--gray);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.hero-meta a:hover {
    color: var(--accent);
}

/* Latest / cards */
.cards-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.card-article {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 18px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--line);
}

.card-article:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.card-number {
    font-family: var(--hff);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--line-dark);
    line-height: 1;
    padding-top: 2px;
}

.card-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.card-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.28;
}

.card-body h3 a {
    color: var(--ink);
}

.card-body h3 a:hover {
    color: var(--accent);
}

.card-excerpt {
    font-size: .95rem;
    color: var(--ink-soft);
    line-height: 1.6;
}

.card-meta {
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--gray);
}

.card-meta a {
    color: var(--gray);
}

.card-meta a:hover {
    color: var(--accent);
}

.card-meta .sep {
    margin: 0 8px;
    color: var(--line-dark);
}

/* Sidebar notes */
.aside-title {
    font-family: var(--hff);
    font-size: .85rem;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--line);
}

.aside-note {
    font-size: .8rem;
    color: var(--ink-soft);
    line-height: 1.55;
    margin-bottom: 18px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--line);
}

.aside-note:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.aside-note .note-label {
    display: block;
    font-size: .62rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 6px;
}

.aside-note p {
    margin-bottom: 8px;
}

.aside-note p:last-child {
    margin-bottom: 0;
}

.aside-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.aside-list a {
    display: block;
    font-family: var(--hff);
    font-size: .88rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.35;
}

.aside-list a:hover {
    color: var(--accent);
}

.aside-list .count {
    display: inline-block;
    font-family: var(--bff);
    font-size: .6rem;
    font-weight: 700;
    color: var(--gray);
    margin-left: 6px;
    letter-spacing: .05em;
}

/* Category page */
.category-header {
    padding: 30px 0 24px;
    border-bottom: 1px solid var(--line);
    margin-bottom: 30px;
}

.category-header h1 {
    font-size: 1.9rem;
    margin-bottom: 10px;
}

.category-header p {
    color: var(--ink-soft);
    max-width: var(--read);
}

/* Article page */
.article-head {
    padding: 18px 0 26px;
    text-align: center;
    max-width: var(--read);
    margin: 0 auto;
}

.article-head .article-label {
    display: inline-block;
    margin-bottom: 16px;
}

.article-head h1 {
    font-size: clamp(1.7rem, 4vw, 2.4rem);
    line-height: 1.18;
    margin-bottom: 16px;
}

.article-excerpt {
    font-size: 1.1rem;
    color: var(--ink-soft);
    line-height: 1.55;
    margin-bottom: 20px;
}

.article-meta-row {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--gray);
}

.article-meta-row a {
    color: var(--gray);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-meta-row a:hover {
    color: var(--accent);
}

.article-meta-row .sep {
    color: var(--line-dark);
}

.article-featured {
    margin: 0 auto 36px;
    max-width: 900px;
}

.article-featured img {
    width: 100%;
    border: 1px solid var(--line);
}

.article-featured figcaption {
    font-size: .78rem;
    color: var(--gray);
    text-align: center;
    margin-top: 10px;
    font-style: italic;
}

/* Article content typography */
.article-content {
    max-width: var(--read);
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.75;
}

.article-content > * + * {
    margin-top: 1.4em;
}

.article-content h2,
.article-content h3,
.article-content h4 {
    font-family: var(--hff);
    font-weight: 700;
    margin-top: 2em;
    margin-bottom: .6em;
    color: var(--ink);
}

.article-content h2 {
    font-size: 1.45rem;
    padding-bottom: .35em;
    border-bottom: 1px solid var(--line);
}

.article-content h3 {
    font-size: 1.2rem;
}

.article-content h4 {
    font-size: 1.05rem;
    font-weight: 700;
}

.article-content p {
    margin-bottom: 1.1em;
}

.article-content p:last-child {
    margin-bottom: 0;
}

.article-content a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-content a:hover {
    color: var(--accent-dark);
}

.article-content ul,
.article-content ol {
    margin-left: 1.6em;
    margin-bottom: 1.1em;
}

.article-content ul {
    list-style: disc;
}

.article-content ol {
    list-style: decimal;
}

.article-content li + li {
    margin-top: .35em;
}

.article-content blockquote {
    margin: 1.8em 0;
    padding: 18px 24px;
    border-left: 3px solid var(--accent);
    background: var(--bg-sec);
    font-family: var(--qff);
    font-style: italic;
    color: var(--ink-soft);
}

.article-content blockquote p:last-child {
    margin-bottom: 0;
}

.article-content figure {
    margin: 1.8em 0;
}

.article-content figcaption {
    font-size: .8rem;
    color: var(--gray);
    text-align: center;
    margin-top: 10px;
    font-style: italic;
}

.article-content img {
    border: 1px solid var(--line);
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: .95rem;
    margin: 1.6em 0;
}

.article-content th,
.article-content td {
    padding: 10px 12px;
    border: 1px solid var(--line);
    text-align: left;
}

.article-content th {
    background: var(--bg-sec);
    font-weight: 600;
}

.article-content code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: .88em;
    background: var(--bg-sec);
    padding: 2px 5px;
    border-radius: 3px;
    color: var(--ink-soft);
}

.article-content pre {
    background: var(--ink);
    color: #f3f4f6;
    padding: 18px;
    border-radius: 4px;
    overflow-x: auto;
    font-size: .88rem;
    line-height: 1.55;
}

.article-content pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}

/* Share */
.share-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 6px 10px;
    margin: 0 auto 30px;
}

.share-label {
    font-size: .65rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--gray);
    padding: 0 8px;
}

.share-pill a {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--ink);
    transition: background .18s, color .18s;
}

.share-pill a:hover {
    background: var(--accent-soft);
    color: var(--accent);
    text-decoration: none;
}

.share-pill svg {
    width: 14px;
    height: 14px;
}

.share-wrap {
    text-align: center;
    margin-bottom: 8px;
}

/* Author box */
.author-box {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    max-width: var(--read);
    margin: 40px auto 0;
    padding: 22px;
    border: 1px solid var(--line);
    background: var(--bg-sec);
}

.author-box-avatar,
.avatar-letter {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    flex-shrink: 0;
    object-fit: cover;
}

.avatar-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: #fff;
    font-family: var(--hff);
    font-size: 1.4rem;
    font-weight: 700;
}

.author-box-info h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.author-box-info h3 a {
    color: var(--ink);
}

.author-box-info h3 a:hover {
    color: var(--accent);
}

.author-box-info p {
    font-size: .92rem;
    color: var(--ink-soft);
    line-height: 1.55;
    margin-bottom: 8px;
}

.author-box-link {
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
}

/* Related articles */
.related-section {
    max-width: var(--read);
    margin: 44px auto 0;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--line);
    font-size: .85rem;
    font-weight: 600;
    color: var(--ink-soft);
}

.pagination a:hover {
    border-color: var(--accent);
    color: var(--accent);
    text-decoration: none;
}

.pagination .current {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.pagination .disabled {
    color: var(--gray-light);
    border-color: var(--line);
}

/* Author page */
.author-profile {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 32px 0;
    border-bottom: 1px solid var(--line);
    margin-bottom: 32px;
}

.author-profile .avatar-letter {
    width: 96px;
    height: 96px;
    font-size: 2.2rem;
}

.author-profile img {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.author-profile h1 {
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.author-profile p {
    color: var(--ink-soft);
    max-width: 600px;
}

/* Author list */
.author-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}

.author-card {
    padding: 22px;
    border: 1px solid var(--line);
    background: var(--bg);
    transition: border-color .18s, box-shadow .18s;
}

.author-card:hover {
    border-color: var(--line-dark);
    box-shadow: 0 4px 16px rgba(0, 0, 0, .04);
}

.author-card a {
    color: var(--ink);
}

.author-card a:hover {
    color: var(--accent);
}

.author-card h3 {
    font-size: 1.1rem;
    margin-bottom: 6px;
}

.author-card .role {
    font-size: .75rem;
    color: var(--gray);
    margin-bottom: 12px;
}

.author-card p {
    font-size: .88rem;
    color: var(--ink-soft);
    line-height: 1.5;
}

/* Contact page */
.contact-page {
    max-width: var(--read);
    margin: 0 auto;
    padding: 30px 0 60px;
}

.contact-page h1 {
    font-size: 1.7rem;
    margin-bottom: 14px;
}

.contact-lead {
    color: var(--ink-soft);
    margin-bottom: 28px;
}

.contact-block {
    padding: 24px;
    border: 1px solid var(--line);
    background: var(--bg-sec);
}

.contact-block h2 {
    font-size: 1rem;
    margin-bottom: 10px;
}

.contact-block p {
    font-size: .95rem;
    color: var(--ink-soft);
    margin-bottom: 12px;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--accent);
}

.contact-link:hover {
    color: var(--accent-dark);
}

/* 404 page */
.page-404 {
    text-align: center;
    padding: 80px 0 120px;
    max-width: var(--read);
    margin: 0 auto;
}

.page-404 .code {
    font-family: var(--hff);
    font-size: 5rem;
    font-weight: 700;
    color: var(--line-dark);
    line-height: 1;
    margin-bottom: 16px;
}

.page-404 h1 {
    font-size: 1.5rem;
    margin-bottom: 14px;
}

.page-404 p {
    color: var(--ink-soft);
    margin-bottom: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--accent);
    color: #fff;
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    border-radius: 3px;
    transition: background .18s;
}

.btn:hover {
    background: var(--accent-dark);
    color: #fff;
    text-decoration: none;
}

/* Footer */
.site-footer {
    background: var(--bg-sec);
    border-top: 1px solid var(--line);
    margin-top: 70px;
    padding: 44px 0 28px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer-brand .footer-logo {
    font-family: var(--hff);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--ink);
}

.footer-brand .footer-logo:hover {
    color: var(--accent);
    text-decoration: none;
}

.footer-desc {
    font-size: .88rem;
    color: var(--ink-soft);
    margin-top: 10px;
    line-height: 1.55;
    max-width: 320px;
}

.footer-col h4 {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 14px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-col a {
    font-size: .88rem;
    color: var(--ink-soft);
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    font-size: .78rem;
    color: var(--gray);
}

.footer-bottom a {
    color: var(--gray);
}

.footer-bottom a:hover {
    color: var(--accent);
}

.footer-bottom-links {
    display: flex;
    gap: 18px;
}

/* Back to top */
#back-to-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--bg);
    border: 1px solid var(--line);
    color: var(--gray);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity .25s, transform .25s, border-color .18s, color .18s;
    z-index: 40;
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#back-to-top:hover {
    border-color: var(--accent);
    color: var(--accent);
}

#back-to-top svg {
    width: 18px;
    height: 18px;
}

/* Search overlay */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(253, 252, 249, .96);
    z-index: 100;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 140px;
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s, visibility .2s;
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-close {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 2rem;
    color: var(--gray);
    line-height: 1;
}

.search-close:hover {
    color: var(--ink);
}

.search-box {
    width: 100%;
    max-width: 620px;
    padding: 0 24px;
}

.search-box input {
    width: 100%;
    padding: 16px 4px;
    border: none;
    border-bottom: 2px solid var(--line-dark);
    background: transparent;
    font-family: var(--hff);
    font-size: 1.6rem;
    color: var(--ink);
    outline: none;
}

.search-box input:focus {
    border-bottom-color: var(--accent);
}

.search-box input::placeholder {
    color: var(--gray-light);
}

/* Responsive */
@media (max-width: 980px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .aside-col {
        position: static;
        border-left: none;
        padding-left: 0;
        border-top: 1px solid var(--line);
        padding-top: 30px;
        margin-top: 10px;
    }

    .aside-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 16px;
    }

    .site-header {
        padding: 24px 0 20px;
    }

    .header-inner {
        flex-wrap: wrap;
    }

    .main-nav .container {
        justify-content: flex-start;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--line);
        flex-direction: column;
        align-items: stretch;
        padding: 8px 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-item > a {
        padding: 12px 24px;
        border-bottom: none;
        margin-bottom: 0;
    }

    .card-article {
        grid-template-columns: 36px 1fr;
        gap: 14px;
    }

    .card-number {
        font-size: 1.15rem;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .search-box input {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .author-profile {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .aside-list {
        grid-template-columns: 1fr;
    }
}