/* =========================================================
   Riddim Notes - main.css
   자메이카 리듬을 걷는 한국인의 노트
   ========================================================= */

:root {
    --rn-paper: #f6f2e7;
    --rn-paper-2: #efeadc;
    --rn-ink: #1a1a1a;
    --rn-ink-soft: #3a3a3a;
    --rn-muted: #6b6b6b;
    --rn-gold: #d4a933;
    --rn-green: #2d5f3f;
    --rn-red: #b8342e;
    --rn-line: rgba(26, 26, 26, 0.12);
    --rn-line-soft: rgba(26, 26, 26, 0.06);

    --rn-serif: "Noto Serif KR", "Playfair Display", Georgia, serif;
    --rn-sans: "IBM Plex Sans KR", "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
    --rn-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
    --rn-display: "Playfair Display", "Noto Serif KR", Georgia, serif;

    --rn-max: 1180px;
    --rn-radius: 4px 4px 0 0;
    --rn-anim: 0.4s cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

body.rn-body {
    background: var(--rn-paper);
    color: var(--rn-ink);
    font-family: var(--rn-serif);
    font-size: 16px;
    line-height: 1.75;
    letter-spacing: 0.005em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.rn-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.rn-skip { position: absolute; top: -100px; left: 0; padding: 8px 12px; background: var(--rn-ink); color: var(--rn-paper); }
.rn-skip:focus { top: 0; }

/* =========================================================
   Header - 슬림 60px
   ========================================================= */
.rn-header {
    height: 60px;
    background: var(--rn-paper);
    border-bottom: 1px solid var(--rn-line);
    position: sticky;
    top: 0;
    z-index: 100;
}
.rn-header-inner {
    max-width: var(--rn-max);
    margin: 0 auto;
    padding: 0 32px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}
.rn-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}
.rn-logo-brand {
    font-family: var(--rn-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--rn-ink);
    letter-spacing: 0.01em;
}
.rn-logo-sub {
    font-family: var(--rn-sans);
    font-size: 10px;
    color: var(--rn-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}
.rn-nav { display: flex; align-items: center; gap: 24px; }
.rn-nav-list {
    display: flex;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.rn-nav-item { margin: 0; }
.rn-nav-link {
    font-family: var(--rn-sans);
    font-size: 13px;
    color: var(--rn-ink-soft);
    letter-spacing: 0.02em;
    position: relative;
    padding-bottom: 3px;
    transition: color var(--rn-anim);
}
.rn-nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 100%;
    bottom: 0;
    height: 1px;
    background: var(--rn-red);
    transition: right var(--rn-anim);
}
.rn-nav-link:hover { color: var(--rn-ink); }
.rn-nav-link:hover::after { right: 0; }
.rn-search-toggle {
    background: none;
    border: 1px solid var(--rn-line);
    padding: 5px 12px;
    font-family: var(--rn-sans);
    font-size: 12px;
    color: var(--rn-ink-soft);
    cursor: pointer;
    border-radius: var(--rn-radius);
    transition: border-color var(--rn-anim);
}
.rn-search-toggle:hover { border-color: var(--rn-ink); }
.rn-search-panel {
    padding: 20px 32px;
    background: var(--rn-paper-2);
    border-bottom: 1px solid var(--rn-line);
}
.rn-searchform {
    max-width: var(--rn-max);
    margin: 0 auto;
    display: flex;
    gap: 12px;
}
.rn-search-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--rn-line);
    background: var(--rn-paper);
    font-family: var(--rn-serif);
    font-size: 15px;
    color: var(--rn-ink);
    border-radius: var(--rn-radius);
}
.rn-search-submit {
    padding: 10px 20px;
    background: var(--rn-ink);
    color: var(--rn-paper);
    border: none;
    font-family: var(--rn-sans);
    font-size: 13px;
    cursor: pointer;
    letter-spacing: 0.05em;
    border-radius: var(--rn-radius);
}

/* =========================================================
   Main container
   ========================================================= */
.rn-main {
    min-height: calc(100vh - 60px);
}
.rn-section-inner {
    max-width: var(--rn-max);
    margin: 0 auto;
    padding: 0 32px;
}

/* =========================================================
   Hero - 좌우 60/40
   ========================================================= */
.rn-hero {
    padding: 88px 0 72px;
    border-bottom: 1px solid var(--rn-line);
    animation: rn-fade-in 0.5s ease-out;
}
.rn-hero-inner {
    max-width: var(--rn-max);
    margin: 0 auto;
    padding: 0 32px;
    display: grid;
    grid-template-columns: 60fr 40fr;
    gap: 64px;
    align-items: center;
}
.rn-hero-text { max-width: 560px; }
.rn-hero-kicker {
    font-family: var(--rn-sans);
    font-size: 12px;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--rn-green);
    margin: 0 0 24px;
}
.rn-hero-title {
    font-family: var(--rn-display);
    font-size: 68px;
    line-height: 1.05;
    font-weight: 700;
    margin: 0 0 28px;
    letter-spacing: -0.01em;
}
.rn-hero-title span { display: inline-block; }
.rn-hero-lead {
    font-size: 17px;
    line-height: 1.8;
    color: var(--rn-ink-soft);
    margin: 0 0 32px;
}
.rn-hero-quote {
    margin: 0 0 20px;
    padding: 0 0 0 20px;
    border-left: 2px solid var(--rn-gold);
    font-family: var(--rn-serif);
    font-style: italic;
    font-size: 16px;
    color: var(--rn-ink-soft);
}
.rn-hero-quote p { margin: 0; }
.rn-hero-cta {
    font-family: var(--rn-sans);
    font-size: 13px;
    color: var(--rn-red);
    letter-spacing: 0.08em;
    border-bottom: 1px solid var(--rn-red);
    padding-bottom: 2px;
    transition: opacity var(--rn-anim);
}
.rn-hero-cta:hover { opacity: 0.7; }

.rn-hero-card {
    animation: rn-fade-in-up 0.6s 0.15s both;
}
.rn-cite-card {
    background: var(--rn-paper-2);
    border-top: 3px solid var(--rn-green);
    padding: 32px 28px;
    border-radius: var(--rn-radius);
    font-family: var(--rn-serif);
}
.rn-cite-year {
    font-family: var(--rn-display);
    font-size: 44px;
    line-height: 1;
    color: var(--rn-ink);
    margin: 0 0 16px;
    font-weight: 700;
}
.rn-cite-author {
    font-family: var(--rn-sans);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--rn-muted);
    text-transform: uppercase;
    margin: 0 0 8px;
}
.rn-cite-title {
    font-size: 15px;
    font-style: italic;
    color: var(--rn-ink-soft);
    margin: 0 0 20px;
    line-height: 1.5;
}
.rn-cite-tag {
    font-family: var(--rn-mono);
    font-size: 11px;
    color: var(--rn-gold);
    margin: 0;
    letter-spacing: 0.05em;
}

/* =========================================================
   Sections
   ========================================================= */
.rn-latest, .rn-cats, .rn-pull, .rn-archive-link {
    padding: 72px 0;
    border-bottom: 1px solid var(--rn-line-soft);
    animation: rn-fade-in-up 0.5s ease-out both;
}
.rn-section-title {
    font-family: var(--rn-display);
    font-size: 32px;
    color: var(--rn-ink);
    margin: 0 0 40px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* Grid */
.rn-grid { display: grid; gap: 32px; }
.rn-grid-3 { grid-template-columns: repeat(3, 1fr); }
.rn-grid-cats { grid-template-columns: repeat(5, 1fr); gap: 20px; }

/* Card */
.rn-card {
    background: var(--rn-paper);
    border: 1px solid var(--rn-line);
    border-radius: var(--rn-radius);
    overflow: hidden;
    transition: transform var(--rn-anim), border-color var(--rn-anim);
}
.rn-card:hover {
    transform: translateY(-2px);
    border-color: var(--rn-ink-soft);
}
.rn-card-link { display: block; color: inherit; }
.rn-card-thumb {
    aspect-ratio: 16 / 9;
    background: var(--rn-paper-2);
    overflow: hidden;
}
.rn-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.rn-card-body { padding: 20px 22px 24px; }
.rn-card-cat {
    display: inline-block;
    font-family: var(--rn-sans);
    font-size: 11px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--rn-green);
    margin-bottom: 10px;
}
.rn-card-title {
    font-family: var(--rn-serif);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.45;
    color: var(--rn-ink);
    margin: 0 0 12px;
}
.rn-card-meta {
    font-family: var(--rn-mono);
    font-size: 11px;
    color: var(--rn-muted);
    margin: 0;
    letter-spacing: 0.05em;
}

/* Category cards */
.rn-cat-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 24px 20px;
    background: var(--rn-paper-2);
    border-radius: var(--rn-radius);
    border-top: 2px solid transparent;
    transition: border-color var(--rn-anim), background var(--rn-anim);
    min-height: 130px;
}
.rn-cat-card:hover {
    border-top-color: var(--rn-red);
    background: #ece5d0;
}
.rn-cat-label {
    font-family: var(--rn-sans);
    font-size: 11px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--rn-muted);
}
.rn-cat-sample {
    font-family: var(--rn-serif);
    font-size: 15px;
    color: var(--rn-ink);
    line-height: 1.45;
    font-weight: 500;
}

/* Pull quote */
.rn-pull { padding: 88px 0; }
.rn-pull-quote {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-family: var(--rn-display);
    font-size: 30px;
    line-height: 1.5;
    font-style: italic;
    color: var(--rn-ink);
}
.rn-pull-quote p { margin: 0; }
.rn-pull-quote::before {
    content: "";
    display: block;
    width: 40px;
    height: 2px;
    background: var(--rn-gold);
    margin: 0 auto 32px;
}

/* Archive link */
.rn-archive-link { text-align: center; padding: 60px 0 80px; }
.rn-archive-a {
    font-family: var(--rn-sans);
    font-size: 14px;
    letter-spacing: 0.1em;
    color: var(--rn-ink);
    border-bottom: 1px solid var(--rn-ink);
    padding-bottom: 3px;
    transition: color var(--rn-anim), border-color var(--rn-anim);
}
.rn-archive-a:hover { color: var(--rn-red); border-color: var(--rn-red); }

/* =========================================================
   Single letter
   ========================================================= */
.rn-letter-wrap {
    max-width: 720px;
    margin: 0 auto;
    padding: 48px 32px 96px;
    animation: rn-fade-in-up 0.5s ease-out both;
}
.rn-breadcrumb {
    font-family: var(--rn-sans);
    font-size: 12px;
    color: var(--rn-muted);
    margin-bottom: 32px;
    letter-spacing: 0.05em;
}
.rn-breadcrumb a { color: var(--rn-muted); border-bottom: 1px solid transparent; transition: border-color var(--rn-anim); }
.rn-breadcrumb a:hover { border-bottom-color: var(--rn-muted); }
.rn-breadcrumb span { color: var(--rn-ink-soft); }

.rn-letter-head { margin-bottom: 40px; text-align: center; }
.rn-letter-cat {
    display: inline-block;
    font-family: var(--rn-sans);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--rn-green);
    margin-bottom: 20px;
}
.rn-letter-title {
    font-family: var(--rn-display);
    font-size: 40px;
    line-height: 1.25;
    font-weight: 700;
    color: var(--rn-ink);
    margin: 0 0 16px;
    letter-spacing: -0.005em;
}
.rn-letter-meta {
    font-family: var(--rn-mono);
    font-size: 12px;
    color: var(--rn-muted);
    margin: 0;
    letter-spacing: 0.05em;
}
.rn-letter-hero {
    margin: 0 -32px 48px;
    padding: 0;
}
.rn-letter-hero img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--rn-radius);
}
.rn-letter-body {
    font-size: 17px;
    line-height: 1.85;
    color: var(--rn-ink);
}
.rn-letter-body p { margin: 0 0 24px; }
.rn-letter-body h2 {
    font-family: var(--rn-display);
    font-size: 24px;
    color: var(--rn-ink);
    margin: 48px 0 20px;
    font-weight: 600;
    letter-spacing: -0.005em;
}
.rn-letter-body a {
    color: var(--rn-red);
    border-bottom: 1px solid rgba(184, 52, 46, 0.35);
    transition: border-color var(--rn-anim);
}
.rn-letter-body a:hover { border-bottom-color: var(--rn-red); }

/* FAQ */
.rn-letter-faq {
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid var(--rn-line);
}
.rn-faq-title {
    font-family: var(--rn-display);
    font-size: 22px;
    color: var(--rn-ink);
    margin: 0 0 28px;
    font-weight: 600;
}
.rn-faq-list dt {
    font-family: var(--rn-serif);
    font-weight: 700;
    font-size: 16px;
    color: var(--rn-ink);
    margin: 24px 0 10px;
}
.rn-faq-list dt::before {
    content: "Q. ";
    color: var(--rn-red);
    font-family: var(--rn-mono);
}
.rn-faq-list dd {
    margin: 0 0 8px 20px;
    font-size: 15px;
    color: var(--rn-ink-soft);
    line-height: 1.75;
}

/* Related */
.rn-related {
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid var(--rn-line);
}
.rn-related-title {
    font-family: var(--rn-display);
    font-size: 22px;
    color: var(--rn-ink);
    margin: 0 0 28px;
    font-weight: 600;
}
.rn-card-related .rn-card-thumb { aspect-ratio: 16 / 10; }

/* =========================================================
   Page / Archive
   ========================================================= */
.rn-page-wrap {
    max-width: 720px;
    margin: 0 auto;
    padding: 48px 32px 96px;
}
.rn-page-title {
    font-family: var(--rn-display);
    font-size: 36px;
    color: var(--rn-ink);
    margin: 0 0 32px;
    font-weight: 600;
}
.rn-page-body {
    font-size: 16px;
    line-height: 1.85;
    color: var(--rn-ink);
}
.rn-page-body h2 {
    font-family: var(--rn-display);
    font-size: 22px;
    margin: 40px 0 16px;
}

.rn-archive-page, .rn-search-page { padding: 48px 0 96px; }
.rn-archive-head { margin-bottom: 40px; }
.rn-archive-title {
    font-family: var(--rn-display);
    font-size: 32px;
    color: var(--rn-ink);
    margin: 0 0 12px;
    font-weight: 600;
}
.rn-archive-desc { color: var(--rn-muted); font-size: 15px; }
.rn-pagination {
    margin-top: 48px;
    text-align: center;
    font-family: var(--rn-sans);
    font-size: 14px;
}
.rn-pagination .page-numbers {
    padding: 6px 12px;
    margin: 0 3px;
    color: var(--rn-ink-soft);
    border: 1px solid transparent;
}
.rn-pagination .current {
    border-color: var(--rn-line);
    color: var(--rn-ink);
}

/* 404 */
.rn-404 { padding: 120px 0; text-align: center; }
.rn-404-title { font-family: var(--rn-display); font-size: 32px; color: var(--rn-ink); margin: 0 0 16px; }
.rn-404-desc { color: var(--rn-muted); margin: 0 0 32px; }
.rn-404-home { font-family: var(--rn-sans); font-size: 14px; color: var(--rn-red); border-bottom: 1px solid var(--rn-red); padding-bottom: 2px; }

.rn-empty {
    font-family: var(--rn-serif);
    font-style: italic;
    color: var(--rn-muted);
    padding: 48px;
    text-align: center;
    grid-column: 1 / -1;
}

/* =========================================================
   Footer - 3열
   ========================================================= */
.rn-footer {
    background: var(--rn-paper-2);
    border-top: 1px solid var(--rn-line);
    padding: 56px 0 32px;
    margin-top: 40px;
}
.rn-footer-inner {
    max-width: var(--rn-max);
    margin: 0 auto;
    padding: 0 32px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
}
.rn-footer-col h3 {
    font-family: var(--rn-sans);
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--rn-muted);
    margin: 0 0 20px;
    font-weight: 500;
}
.rn-footer-about p {
    font-size: 14px;
    color: var(--rn-ink-soft);
    margin: 0 0 16px;
    line-height: 1.7;
}
.rn-footer-disclaimer em {
    font-size: 12px;
    color: var(--rn-muted);
}
.rn-footer-list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.rn-footer-list li { margin-bottom: 10px; }
.rn-footer-list a {
    font-family: var(--rn-serif);
    font-size: 14px;
    color: var(--rn-ink-soft);
    border-bottom: 1px solid transparent;
    transition: border-color var(--rn-anim);
}
.rn-footer-list a:hover { border-bottom-color: var(--rn-ink-soft); }
.rn-footer-bottom {
    max-width: var(--rn-max);
    margin: 40px auto 0;
    padding: 24px 32px 0;
    border-top: 1px solid var(--rn-line);
    text-align: center;
}
.rn-copy {
    font-family: var(--rn-mono);
    font-size: 11px;
    color: var(--rn-muted);
    letter-spacing: 0.05em;
}

/* =========================================================
   Animations
   ========================================================= */
@keyframes rn-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes rn-fade-in-up {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 900px) {
    .rn-hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .rn-hero-title { font-size: 48px; }
    .rn-grid-3 { grid-template-columns: 1fr; }
    .rn-grid-cats { grid-template-columns: repeat(2, 1fr); }
    .rn-footer-inner { grid-template-columns: 1fr; gap: 32px; }
    .rn-letter-hero { margin: 0 0 32px; }
    .rn-letter-title { font-size: 30px; }
    .rn-pull-quote { font-size: 22px; }
}

@media (max-width: 600px) {
    .rn-header-inner { padding: 0 20px; }
    .rn-section-inner, .rn-hero-inner { padding: 0 20px; }
    .rn-letter-wrap, .rn-page-wrap { padding: 32px 20px 64px; }
    .rn-hero { padding: 56px 0 48px; }
    .rn-hero-title { font-size: 40px; }
    .rn-latest, .rn-cats, .rn-pull, .rn-archive-link { padding: 48px 0; }
    .rn-logo-sub { display: none; }
    .rn-nav-list { display: none; }
    .rn-footer-inner { padding: 0 20px; gap: 32px; }
}