/* ==========================================================================
   Eunji Bak — Portfolio
   Editorial minimal. Korean-first. Pretendard.
   ========================================================================== */

@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500&display=swap');

@font-face {
  font-family: 'SpoqaHanSansNeo';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2108@1.1/SpoqaHanSansNeo-Thin.woff') format('woff');
  font-weight: 100;
  font-display: swap;
}
@font-face {
  font-family: 'SpoqaHanSansNeo';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2108@1.1/SpoqaHanSansNeo-Light.woff') format('woff');
  font-weight: 300;
  font-display: swap;
}
@font-face {
  font-family: 'SpoqaHanSansNeo';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2108@1.1/SpoqaHanSansNeo-Regular.woff') format('woff');
  font-weight: normal;
  font-display: swap;
}
@font-face {
  font-family: 'SpoqaHanSansNeo';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2108@1.1/SpoqaHanSansNeo-Medium.woff') format('woff');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: 'SpoqaHanSansNeo';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2108@1.1/SpoqaHanSansNeo-Bold.woff') format('woff');
  font-weight: 700;
  font-display: swap;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* --- Tokens --- */
:root {
  /* Colors */
  --bg: #faf9f6;
  --bg-elevated: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --ink-muted: #8a8a8a;
  --line: #e8e6e0;
  --line-soft: #f0eee8;
  --accent: #c25b3f;        /* warm clay — agentcat 정체성 */
  --accent-soft: #f5e8e3;
  --tag-bg: #f0eee8;

  /* Type */
  --font-sans: 'SpoqaHanSansNeo', 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-serif: 'SpoqaHanSansNeo', 'Pretendard Variable', Pretendard, sans-serif;

  /* Layout */
  --max-w: 720px;
  --max-w-wide: 1080px;
  --gutter: clamp(20px, 5vw, 40px);
}

/* --- Base --- */
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  font-feature-settings: 'tnum' 1, 'ss01' 1;
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--ink);
}

p { margin: 0; }
p + p { margin-top: 1em; }

strong { font-weight: 700; color: var(--ink); }
em { font-style: normal; }

/* --- Container --- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container-wide {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ==========================================================================
   Navigation
   ========================================================================== */
.nav {
  padding: 24px 0;
  border-bottom: 1px solid var(--line-soft);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(250, 249, 246, 0.85);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  font-style: normal;
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--ink-soft);
}
.nav-links a {
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--accent); }

/* Mobile nav labels — compact text on narrow screens */
.nav-label-mobile { display: none; }
@media (max-width: 600px) {
  .nav-label-full { display: none; }
  .nav-label-mobile { display: inline; }
}

/* ==========================================================================
   Home — Hero
   ========================================================================== */
.hero {
  padding: clamp(80px, 14vw, 160px) 0 clamp(60px, 10vw, 120px);
}
.hero-eyebrow {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-muted);
  margin-bottom: 24px;
  font-weight: 400;
}
.hero-title {
  font-family: var(--font-sans);
  font-size: clamp(36px, 6vw, 60px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: 28px;
  color: var(--ink);
}
.hero-title em {
  font-style: normal;
  color: var(--accent);
}
.hero-lede {
  font-size: clamp(17px, 1.8vw, 19px);
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 580px;
}

/* --- Home meta strip --- */
.meta-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 32px;
  padding: 40px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(60px, 10vw, 100px);
}
.meta-item-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
  margin-bottom: 8px;
}
.meta-item-value {
  font-size: 15px;
  color: var(--ink);
  line-height: 1.5;
}

/* --- Cases section --- */
.cases-section {
  padding-bottom: clamp(80px, 12vw, 140px);
}
.cases-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 48px;
}
.cases-title {
  font-family: var(--font-serif);
  font-style: normal;
  font-size: 14px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ink-muted);
}
.cases-count {
  font-size: 13px;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}

.case-card {
  display: block;
  padding: 48px 0;
  border-top: 1px solid var(--line);
  transition: opacity 0.2s ease;
  position: relative;
}
.case-card:last-of-type { border-bottom: 1px solid var(--line); }
.case-card:hover { opacity: 0.7; }
.case-card-grid {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 32px;
  align-items: baseline;
}
.case-num {
  font-family: var(--font-serif);
  font-style: normal;
  font-size: 15px;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}
.case-body { min-width: 0; }
.case-title {
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  line-height: 1.3;
}
.case-desc {
  font-size: 16px;
  color: var(--ink-soft);
  margin-bottom: 16px;
  line-height: 1.6;
}
.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.case-tag {
  font-size: 12px;
  padding: 4px 10px;
  background: var(--tag-bg);
  border-radius: 100px;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}
.case-arrow {
  font-size: 18px;
  color: var(--ink-muted);
  align-self: center;
  transition: transform 0.2s ease, color 0.2s ease;
}
.case-card:hover .case-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

@media (max-width: 600px) {
  .case-card-grid {
    grid-template-columns: 1fr auto;
    gap: 16px;
  }
  .case-num {
    grid-column: 1 / -1;
    margin-bottom: 4px;
  }
}

/* Draft / placeholder cards (Selected Work) */
.case-card.is-draft { cursor: default; }
.case-card.is-draft:hover { opacity: 1; }

/* Locked cards (release-scheduled posts before unlock time) */
.case-card.is-locked { cursor: default; opacity: 0.55; }
.case-card.is-locked:hover { opacity: 0.55; }
.case-card.is-locked:hover .case-arrow { transform: none; color: var(--ink-muted); }
.case-arrow.case-countdown {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.case-status {
  font-size: 11px;
  color: var(--ink-muted);
  text-align: right;
  line-height: 1.5;
  align-self: center;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Marketing & Acquisition — secondary visual weight */
.work-secondary .case-title { font-size: clamp(18px, 2vw, 22px); }
.work-secondary .case-num { font-size: 13px; }
.work-secondary .case-desc { font-size: 14px; }

/* Section intro paragraph (used as teaser block on home Agent Lab) */
.section-intro {
  border-top: 1px solid var(--line);
  padding: 40px 0 8px;
  max-width: 640px;
}
.section-intro p {
  font-size: clamp(17px, 1.8vw, 19px);
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 12px;
}
.section-intro p:last-child { margin-bottom: 0; }

/* Section "view all" link */
.section-more {
  padding-top: 32px;
  text-align: right;
}
.section-more a {
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.section-more a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ==========================================================================
   Case page
   ========================================================================== */
.case-header {
  padding: clamp(60px, 10vw, 100px) 0 clamp(40px, 6vw, 60px);
}
.case-eyebrow {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 20px;
  font-weight: 400;
}
.case-page-title {
  font-family: var(--font-sans);
  font-size: clamp(32px, 5.5vw, 52px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: 32px;
}

/* --- TL;DR card --- */
.tldr {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  padding: clamp(28px, 4vw, 40px);
  margin: clamp(40px, 6vw, 60px) 0;
  border-radius: 2px;
}
.tldr-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 400;
  margin-bottom: 16px;
}
.tldr p { font-size: 16px; line-height: 1.7; }
.tldr-result-title {
  font-size: 14px;
  font-weight: 700;
  margin-top: 24px;
  margin-bottom: 12px;
  color: var(--ink);
}
.tldr-list {
  list-style: none;
  padding: 0;
}
.tldr-list li {
  padding: 6px 0 6px 20px;
  position: relative;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.6;
}
.tldr-list li::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: var(--ink-muted);
  font-weight: 700;
}

/* --- Section --- */
.section {
  padding: clamp(40px, 6vw, 64px) 0;
  border-top: 1px solid var(--line-soft);
}
.section-num {
  font-family: var(--font-serif);
  font-style: normal;
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.section-title {
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 700;
  margin-bottom: clamp(28px, 4vw, 40px);
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.subsection {
  margin-top: clamp(36px, 5vw, 48px);
}
.subsection-title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.sub-subsection-title {
  font-size: 16px;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 12px;
  color: var(--ink);
}

/* --- Prose --- */
.prose p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
  margin-bottom: 1em;
}
.prose p:last-child { margin-bottom: 0; }

/* --- Blockquote --- */
.prose blockquote {
  border-left: 2px solid var(--accent);
  padding: 8px 0 8px 24px;
  margin: 28px 0;
  font-family: var(--font-serif);
  font-style: normal;
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink-soft);
}
.prose blockquote em {
  font-style: normal;
}

/* --- Tables --- */
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
  line-height: 1.6;
}
.prose th, .prose td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.prose th {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  font-weight: 700;
  border-bottom: 1px solid var(--ink);
}
.prose tr:last-child td { border-bottom: none; }
.prose td strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
}

/* On small screens, tables can overflow */
.table-wrap {
  overflow-x: auto;
  margin: 28px -8px;
  padding: 0 8px;
}

/* --- Code blocks --- */
.prose pre {
  background: #f4f2ec;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 20px 24px;
  margin: 24px 0;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.7;
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  color: var(--ink);
}
.prose code {
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--line-soft);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--ink);
}
.prose pre code {
  background: none;
  padding: 0;
}

/* --- Lists --- */
.prose ul, .prose ol {
  padding-left: 1.4em;
  margin: 16px 0;
}
.prose li {
  margin-bottom: 8px;
  line-height: 1.7;
}
.prose ul li::marker { color: var(--ink-muted); }

/* --- Image placeholder --- */
.image-placeholder {
  margin: 32px 0;
  border: 1px dashed var(--ink-muted);
  background: var(--line-soft);
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 4px;
  color: var(--ink-muted);
  text-align: center;
  padding: 24px;
}
.image-placeholder-icon {
  font-size: 24px;
  opacity: 0.5;
}
.image-placeholder-label {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.02em;
}
.image-placeholder-caption {
  font-size: 12px;
  color: var(--ink-muted);
  font-style: normal;
}

/* For mobile-style narrow image (telegram screenshots) */
.image-placeholder.narrow {
  aspect-ratio: 9 / 16;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Pull quote / callout --- */
.callout {
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 24px 28px;
  margin: 28px 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}
.callout strong { color: var(--accent); }

/* --- Section divider --- */
.divider {
  border: none;
  border-top: 1px solid var(--line);
  margin: clamp(40px, 6vw, 60px) 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--line);
  margin-top: clamp(80px, 12vw, 120px);
  font-size: 13px;
  color: var(--ink-muted);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer a {
  color: var(--ink-soft);
  transition: color 0.15s ease;
}
.footer a:hover { color: var(--accent); }
.footer-links {
  display: flex;
  gap: 20px;
}

/* ==========================================================================
   Back to top / case nav
   ========================================================================== */
.case-nav {
  display: flex;
  justify-content: space-between;
  padding: 32px 0;
  margin-top: 60px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
.case-nav a {
  color: var(--ink-soft);
  transition: color 0.15s ease;
}
.case-nav a:hover { color: var(--accent); }

/* --- Reveal animation on load --- */
@media (prefers-reduced-motion: no-preference) {
  .fade-in {
    opacity: 0;
    transform: translateY(8px);
    animation: fadeIn 0.6s ease-out forwards;
  }
  .fade-in:nth-child(2) { animation-delay: 0.08s; }
  .fade-in:nth-child(3) { animation-delay: 0.16s; }
  .fade-in:nth-child(4) { animation-delay: 0.24s; }
}
@keyframes fadeIn {
  to { opacity: 1; transform: translateY(0); }
}