/* ===========================================
   Portfolio — Lee Hojong
   Default palette: Studio (cool paper · graphite · indigo)
   =========================================== */

:root {
  --bg: #eef0f2;
  --surface: #f7f8f9;
  --ink: #15171a;
  --ink-2: #25282d;
  --muted: #6a6e75;
  --muted-2: #9499a1;
  --hairline: rgba(21, 23, 26, 0.10);
  --hairline-strong: rgba(21, 23, 26, 0.22);
  --hairline-soft: rgba(21, 23, 26, 0.05);
  --accent: #2b3a8c;
  --accent-soft: rgba(43, 58, 140, 0.06);
  --accent-glow: rgba(43, 58, 140, 0.14);
  --title-accent: var(--accent);

  --font-sans: "Pretendard Variable", "Pretendard", -apple-system, BlinkMacSystemFont,
    "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --font-serif: "Noto Serif KR", "Nanum Myeongjo", "AppleMyungjo", "Batang", serif;
  --font-mono: "IBM Plex Mono", "D2Coding", "SF Mono", Menlo, monospace;

  --max: 1240px;
  --gutter: clamp(20px, 4vw, 56px);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --bg: #0f1114;
  --surface: #171a1f;
  --ink: #e6eaf0;
  --ink-2: #cfd5dd;
  --muted: #808791;
  --muted-2: #565b63;
  --hairline: rgba(230, 234, 240, 0.08);
  --hairline-strong: rgba(230, 234, 240, 0.18);
  --hairline-soft: rgba(230, 234, 240, 0.04);
  --accent: #8a9be8;
  --accent-soft: rgba(138, 155, 232, 0.10);
  --accent-glow: rgba(138, 155, 232, 0.20);
}

/* Slate palette — colder, deeper, more architectural */
[data-palette="slate"] {
  --bg: #e6e8eb;
  --surface: #f1f3f5;
  --ink: #101317;
  --ink-2: #1f242b;
  --muted: #5f6670;
  --muted-2: #8a929c;
  --hairline: rgba(16, 19, 23, 0.10);
  --hairline-strong: rgba(16, 19, 23, 0.22);
  --hairline-soft: rgba(16, 19, 23, 0.05);
  --accent: #1f3a5f;
  --accent-soft: rgba(31, 58, 95, 0.07);
  --accent-glow: rgba(31, 58, 95, 0.16);
}
[data-theme="dark"][data-palette="slate"] {
  --bg: #0c0e11;
  --surface: #14171c;
  --ink: #e2e6ec;
  --ink-2: #c8ced6;
  --muted: #7c838c;
  --muted-2: #545962;
  --hairline: rgba(226, 230, 236, 0.08);
  --hairline-strong: rgba(226, 230, 236, 0.18);
  --hairline-soft: rgba(226, 230, 236, 0.04);
  --accent: #7a98c8;
  --accent-soft: rgba(122, 152, 200, 0.10);
  --accent-glow: rgba(122, 152, 200, 0.20);
}

/* Mono palette — no accent, ink-only */
[data-palette="mono"] {
  --bg: #ededeb;
  --surface: #f5f5f3;
  --ink: #0e1012;
  --ink-2: #1d2024;
  --muted: #6a6d72;
  --muted-2: #9598a0;
  --hairline: rgba(14, 16, 18, 0.10);
  --hairline-strong: rgba(14, 16, 18, 0.22);
  --hairline-soft: rgba(14, 16, 18, 0.05);
  --accent: #0e1012;
  --accent-soft: rgba(14, 16, 18, 0.05);
  --accent-glow: rgba(14, 16, 18, 0.10);
}
[data-theme="dark"][data-palette="mono"] {
  --bg: #0c0d0f;
  --surface: #16181b;
  --ink: #ebedf0;
  --ink-2: #d3d6dc;
  --muted: #82858b;
  --muted-2: #565962;
  --hairline: rgba(235, 237, 240, 0.08);
  --hairline-strong: rgba(235, 237, 240, 0.18);
  --hairline-soft: rgba(235, 237, 240, 0.04);
  --accent: #ebedf0;
  --accent-soft: rgba(235, 237, 240, 0.06);
  --accent-glow: rgba(235, 237, 240, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
  letter-spacing: -0.005em;
  overflow-x: hidden;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);

  /* 한글 개행 — 어절 단위로 끊고, 절대 음절 중간에서 끊지 않게 */
  word-break: keep-all;
  overflow-wrap: break-word;
  -webkit-hyphens: none;
  hyphens: none;
}

/* 한글 텍스트 — pretty 줄바꿈 + 어절 단위 */
.kr,
h1, h2, h3, h4, h5, h6,
p, li, dt, dd, blockquote {
  word-break: keep-all;
  overflow-wrap: break-word;
}
h1, h2, h3, .hero-headline, .section-title, .sheet-title,
.detail-title, .footer-mark {
  text-wrap: pretty;
}

/* View transitions — used by SPA router */
.view {
  opacity: 1;
  transition: opacity 0.28s var(--ease);
}
.view.fade-out { opacity: 0; }
[hidden] { display: none !important; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; padding: 0; }

::selection { background: var(--accent); color: var(--surface); }
[data-palette="mono"] ::selection { background: var(--ink); color: var(--bg); }

/* ---------- Cursor follower ---------- */
.cursor-glow {
  position: fixed;
  pointer-events: none;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  transform: translate(-50%, -50%);
  z-index: 1;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  mix-blend-mode: multiply;
}
[data-theme="dark"] .cursor-glow { mix-blend-mode: screen; }
body:hover .cursor-glow { opacity: 0.7; }

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: var(--accent);
  z-index: 200;
  width: 0;
  transition: width 0.05s linear;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px var(--gutter);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}
.site-header.scrolled { border-bottom-color: var(--hairline); }

.brand {
  display: flex; align-items: baseline; gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 500;
  font-size: 13px;
  line-height: 1;
}
.brand-name { font-weight: 500; color: var(--ink); }
.brand-meta { color: var(--muted); }

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
}
.nav a {
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--muted);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
  position: relative;
}
.nav a:hover { color: var(--ink); background: var(--hairline-soft); }
.nav a.active { color: var(--ink); }
.nav a.active::before {
  content: "";
  position: absolute;
  left: 12px;
  bottom: 4px;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.icon-btn {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--hairline);
  border-radius: 8px;
  color: var(--muted);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.icon-btn:hover { color: var(--ink); border-color: var(--hairline-strong); background: var(--surface); }
.icon-btn svg { width: 14px; height: 14px; }

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

/* ---------- Section header ---------- */
.section {
  padding: clamp(80px, 10vw, 140px) 0;
  border-top: 1px solid var(--hairline);
  position: relative;
}
.section:first-of-type { border-top: 0; }

.section-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-bottom: 64px;
}
@media (min-width: 800px) {
  .section-head { grid-template-columns: 200px 1fr; gap: 60px; }
}

.section-id {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.section-id .num {
  color: var(--accent);
  font-weight: 500;
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
  color: var(--ink);
  text-wrap: balance;
}
.section-title em {
  font-style: italic;
  color: var(--accent);
  font-weight: 400;
}
.section-desc {
  color: var(--muted);
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
}

/* ---------- Hero ---------- */
.hero {
  padding: 180px var(--gutter) 100px;
  max-width: var(--max);
  margin: 0 auto;
  position: relative;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 56px;
}
.status-dot {
  display: inline-flex; align-items: center; gap: 8px;
}
.status-dot::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 var(--accent-glow); }
  70%  { box-shadow: 0 0 0 10px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.hero-meta-divider { width: 1px; height: 12px; background: var(--hairline); }
.hero-meta a { color: var(--muted); transition: color 0.2s; }
.hero-meta a:hover { color: var(--ink); }

.hero-headline {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(44px, 8.4vw, 124px);
  line-height: 0.96;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin: 0 0 56px;
  text-wrap: balance;
  word-break: keep-all;
  overflow-wrap: break-word;
}
.hero-headline .line-1,
.hero-headline .line-2,
.hero-headline .line-3 {
  display: block;
  white-space: nowrap; /* hero는 한 줄씩 — 절대 어절 안에서 안 끊김 */
}
@media (max-width: 720px) {
  .hero-headline .line-1,
  .hero-headline .line-2,
  .hero-headline .line-3 { white-space: normal; }
}
.hero-headline .line-2 {
  font-style: italic;
  color: var(--ink);
}
.hero-headline .swap-word {
  position: relative;
  display: inline-block;
  color: var(--accent);
  font-style: italic;
  vertical-align: baseline;
}
.hero-headline .swap-word::after {
  content: "";
  display: inline-block;
  width: 0.08em;
  height: 0.86em;
  background: var(--accent);
  margin-left: 0.05em;
  vertical-align: -0.08em;
  animation: caret 1.05s steps(1) infinite;
}
@keyframes caret { 50% { opacity: 0; } }

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px 48px;
}
@media (min-width: 900px) {
  .hero-grid { grid-template-columns: minmax(0, 1.15fr) minmax(460px, 0.85fr); }
}
@media (max-width: 720px) {
  .hero {
    padding-top: 112px;
    padding-bottom: 72px;
  }
  .hero-meta {
    margin-bottom: 36px;
  }
}

.hero-lede p {
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink-2);
  margin: 0 0 18px;
  max-width: 56ch;
}
.hero-lede p + p { color: var(--muted); }

.hero-tags {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 28px;
}
.tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 5px 10px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface);
}

.hero-side {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-self: flex-end;
}
.profile-now-card {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
  padding: 22px;
}
.profile-row {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-right: 26px;
  border-right: 1px dashed var(--hairline-soft);
}
.profile-thumb {
  width: 100%;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--hairline);
  border-radius: 12px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 18%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 34%),
    var(--bg);
}
.profile-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 20%;
  filter: saturate(0.92) contrast(1.02);
}
.profile-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  color: var(--accent);
  margin-bottom: 8px;
}
.profile-contact {
  display: grid;
  gap: 5px;
}
.profile-contact a {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--muted);
  word-break: normal;
  overflow-wrap: anywhere;
  transition: color 0.2s;
}
.profile-contact a:hover {
  color: var(--ink);
}
.now-card {
  border: 1px solid var(--hairline);
  background: var(--surface);
  border-radius: 14px;
  padding: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  position: relative;
  overflow: hidden;
}
.now-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}
.now-card-title {
  display: flex; align-items: center; gap: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
  font-size: 10.5px;
}
.now-panel {
  align-self: start;
  padding-top: 2px;
}
.now-panel .now-card-title {
  margin-bottom: 18px;
}
.now-panel .now-row {
  grid-template-columns: 56px 1fr;
}
.now-panel .now-row .v {
  line-height: 1.55;
}
@media (max-width: 720px) {
  .profile-now-card {
    grid-template-columns: 1fr;
  }
  .profile-row {
    display: grid;
    grid-template-columns: 96px 1fr;
    align-items: center;
    padding-right: 0;
    padding-bottom: 16px;
    border-right: 0;
    border-bottom: 1px dashed var(--hairline-soft);
  }
  .now-panel {
    grid-column: 1;
  }
}
.now-pulse {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.now-row {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 12px;
  padding: 8px 0;
  border-top: 1px dashed var(--hairline-soft);
}
.now-row:first-of-type { border-top: 0; padding-top: 0; }
.now-row .k { color: var(--muted); }
.now-row .v { color: var(--ink); }

.scroll-cue {
  display: inline-flex; align-items: center; gap: 10px;
  margin-top: 64px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.scroll-cue .line {
  width: 36px; height: 1px;
  background: var(--ink);
  position: relative;
  overflow: hidden;
}
.scroll-cue .line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateX(-100%);
  animation: scrollLine 2.4s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: translateX(-100%); }
  60% { transform: translateX(100%); }
  100% { transform: translateX(100%); }
}

/* ---------- About cards ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--hairline);
  border-left: 1px solid var(--hairline);
}
@media (min-width: 760px) {
  .about-grid { grid-template-columns: repeat(3, 1fr); }
}
.about-card {
  border-right: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 36px 32px 40px;
  background: var(--surface);
  position: relative;
  transition: background 0.3s var(--ease);
}
.about-card:hover { background: var(--bg); }
.about-card .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 28px;
}
.about-card .eyebrow::before {
  content: ""; width: 14px; height: 1px; background: var(--accent);
}
.about-card h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 22px;
  line-height: 1.4;
  letter-spacing: -0.015em;
  margin: 0 0 16px;
  color: var(--ink);
  text-wrap: balance;
}
.about-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- Work controls ---------- */
.work-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin: -12px 0 34px;
}
.view-switch {
  display: inline-flex;
  align-items: center;
  padding: 4px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--surface);
  gap: 2px;
}
.vsw {
  width: 32px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  color: var(--muted);
  transition: color 0.2s, background 0.2s;
}
.vsw:hover { color: var(--ink); }
.vsw.active { background: var(--ink); color: var(--bg); }
.vsw svg { width: 14px; height: 14px; }

/* ---------- Project grid: list mode ---------- */
.project-grid[data-mode="list"] {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--hairline);
}
.project-grid[data-mode="list"] .project-card {
  display: grid;
  grid-template-columns: 56px 220px 1fr 200px 24px;
  align-items: center;
  gap: 28px;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  border-radius: 0;
  background: transparent;
  padding: 22px 8px;
  transition: padding 0.3s var(--ease), background 0.3s var(--ease);
  position: relative;
  overflow: visible;
}
.project-grid[data-mode="list"] .project-card:hover {
  padding-left: 20px; padding-right: 20px;
  background: var(--surface);
}
.project-grid[data-mode="list"] .project-visual,
.project-grid[data-mode="list"] .project-stack,
.project-grid[data-mode="list"] .project-cta {
  display: none;
}
.project-grid[data-mode="list"] .project-body {
  display: contents;
}
.project-grid[data-mode="list"] .list-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}
.project-grid[data-mode="list"] .project-meta {
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}
.project-grid[data-mode="list"] .project-name {
  font-size: 24px;
  margin: 0;
}
.project-grid[data-mode="list"] .project-oneliner {
  font-size: 14px;
  color: var(--muted);
  margin: 0;
  max-width: 56ch;
}
.project-grid[data-mode="list"] .list-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.project-grid[data-mode="list"] .list-status .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.project-grid[data-mode="list"] .list-status.status-end .dot { background: var(--muted-2); }
.project-grid[data-mode="list"] .list-status.status-internal .dot { background: #888; }
.project-grid[data-mode="list"] .list-arrow {
  font-family: var(--font-mono);
  color: var(--muted);
  transition: transform 0.3s var(--ease), color 0.3s var(--ease);
}
.project-grid[data-mode="list"] .project-card:hover .list-arrow {
  color: var(--accent);
  transform: translateX(4px);
}
@media (max-width: 800px) {
  .project-grid[data-mode="list"] .project-card {
    grid-template-columns: 40px 1fr;
    gap: 16px;
  }
  .project-grid[data-mode="list"] .project-meta,
  .project-grid[data-mode="list"] .list-status,
  .project-grid[data-mode="list"] .list-arrow { display: none; }
}

.count-badge {
  font-family: var(--font-mono);
  font-size: 10.5px;
  margin-left: 4px;
  opacity: 0.5;
}

/* ---------- Project grid ---------- */
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 800px) {
  .project-grid { grid-template-columns: 1fr 1fr; }
}

.project-card {
  position: relative;
  border: 1px solid var(--hairline);
  background: var(--surface);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.3s var(--ease), transform 0.4s var(--ease-out);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  padding: 14px;
}
.project-card:hover {
  border-color: var(--hairline-strong);
}
.project-card.is-hover { transform: translateY(-2px); }

.project-visual {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  overflow: hidden;
}
.project-visual .pattern {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
}
.project-visual .pattern svg { width: 100%; height: 100%; display: block; }

.project-visual .media-img,
.project-visual .media-video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}
.project-card:hover .project-visual .media-img,
.project-card:hover .project-visual .media-video {
  opacity: 1;
}

.project-tag {
  position: absolute;
  top: 14px; left: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  padding: 5px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: blur(6px);
  border: 1px solid var(--hairline);
  color: var(--muted);
}
.project-tag .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.project-tag.status-end .dot { background: var(--muted-2); }
.project-tag.status-internal .dot { background: #888; }

.project-body {
  padding: 22px 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}
.list-num,
.list-status,
.list-arrow {
  display: none;
}
.project-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
}
.project-name {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 28px;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0;
  color: var(--ink);
}
.project-name .accent-italic {
  font-style: italic;
  color: var(--accent);
}
.project-oneliner {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--muted);
  margin: 0;
  max-width: 48ch;
}
.project-stack {
  display: flex; flex-wrap: wrap; gap: 5px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--hairline);
}
.project-stack span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.project-stack span:not(:last-child)::after {
  content: "·";
  margin-left: 5px;
  color: var(--muted-2);
}

.project-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  margin-top: 4px;
}
.project-cta .arrow {
  transition: transform 0.3s var(--ease);
  display: inline-block;
}
.project-card:hover .project-cta .arrow { transform: translateX(4px); color: var(--accent); }

/* ---------- Additional list (compact) ---------- */
.additional-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--hairline);
}
.additional-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 32px;
  align-items: baseline;
  padding: 26px 4px;
  border-bottom: 1px solid var(--hairline);
  cursor: pointer;
  transition: padding 0.3s var(--ease), background 0.3s var(--ease);
  position: relative;
}
.additional-row:hover { padding-left: 16px; padding-right: 16px; }
.additional-row::before {
  content: "";
  position: absolute;
  left: 0; bottom: -1px;
  height: 1px;
  width: 0%;
  background: var(--accent);
  transition: width 0.4s var(--ease-out);
}
.additional-row:hover::before { width: 100%; }
.additional-row .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
}
.additional-row .name {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: -0.015em;
  margin: 0 0 4px;
  color: var(--ink);
  font-weight: 400;
}
.additional-row .ol {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0;
  line-height: 1.6;
  max-width: 64ch;
}
.additional-row .role-pill {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
  white-space: nowrap;
}
@media (max-width: 720px) {
  .additional-row { grid-template-columns: 50px 1fr; }
  .additional-row .role-pill { display: none; }
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  padding-left: 24px;
  max-width: 760px;
}
@media (min-width: 1000px) {
  .timeline {
    margin-left: 260px;
  }
}
.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--hairline);
}
.timeline-item {
  position: relative;
  padding: 8px 0 36px;
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 32px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 14px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--hairline-strong);
  transition: all 0.3s var(--ease);
}
.timeline-item.is-current::before {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.timeline-period {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding-top: 2px;
}
.timeline-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0 0 8px;
  color: var(--ink);
  text-wrap: balance;
}
.timeline-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0;
  max-width: 56ch;
}
@media (max-width: 720px) {
  .timeline-item { grid-template-columns: 1fr; gap: 6px; }
}

/* ---------- Detail view (full page) ---------- */
.detail-view {
  padding-top: 64px; /* under fixed header */
  min-height: 100vh;
}

.detail-topbar {
  position: sticky;
  top: 64px;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--hairline);
}
.detail-topbar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
}
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px 8px 12px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
  width: fit-content;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.back-btn:hover { color: var(--ink); border-color: var(--hairline-strong); background: var(--bg); }
.back-btn .back-arrow { font-size: 13px; }
.detail-topbar-center {
  display: inline-flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.detail-counter { color: var(--accent); }
.detail-topbar-name {
  font-family: var(--font-serif);
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--ink);
  font-style: normal;
}
.detail-topbar-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-end;
}
.topbar-arrow {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--hairline);
  border-radius: 50%;
  color: var(--muted);
  background: var(--surface);
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s;
}
.topbar-arrow:hover {
  color: var(--ink);
  border-color: var(--hairline-strong);
  background: var(--bg);
}
.topbar-arrow:disabled { opacity: 0.3; cursor: default; }
.topbar-arrow svg { width: 14px; height: 14px; }
.detail-progress {
  height: 1px;
  background: var(--hairline-soft);
  position: relative;
  overflow: hidden;
}
.detail-progress::after {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: var(--progress, 0%);
  background: var(--accent);
  transition: width 0.4s var(--ease);
}

@media (max-width: 720px) {
  .detail-topbar-inner { grid-template-columns: auto 1fr auto; gap: 8px; }
  .detail-topbar-center .detail-topbar-name { display: none; }
}

/* layout: mini index + body */
.detail-layout {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px var(--gutter) 80px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}
@media (min-width: 1000px) {
  .detail-layout {
    grid-template-columns: 220px 1fr;
    gap: 72px;
  }
}

.detail-mini {
  display: none;
}
@media (min-width: 1000px) {
  .detail-mini {
    display: block;
    position: sticky;
    top: 152px; /* header + topbar */
    align-self: start;
    max-height: calc(100vh - 180px);
    overflow-y: auto;
    padding-right: 8px;
  }
}
.mini-section {
  margin-bottom: 28px;
}
.mini-section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 10px;
  padding-left: 12px;
}
.mini-link {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px;
  align-items: baseline;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s, background 0.2s;
  position: relative;
}
.mini-link:hover { color: var(--ink); background: var(--hairline-soft); }
.mini-link .mini-num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted-2);
  letter-spacing: 0.04em;
}
.mini-link .mini-name {
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: -0.005em;
  color: inherit;
}
.mini-link.active {
  color: var(--ink);
  background: var(--surface);
}
.mini-link.active .mini-num { color: var(--accent); }
.mini-link.active::before {
  content: "";
  position: absolute;
  left: -8px; top: 12px; bottom: 12px;
  width: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* body */
.detail-body {
  min-width: 0;
}
.detail-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.10em;
  color: var(--muted);
  text-transform: uppercase;
  display: flex; gap: 14px; align-items: center;
  margin-bottom: 22px;
  flex-wrap: wrap;
}
.detail-eyebrow .e-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--surface);
}
.detail-eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.detail-eyebrow .e-pill.status-end .dot { background: var(--muted-2); }
.detail-eyebrow .e-pill.status-internal .dot { background: #888; }

.detail-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(44px, 8vw, 96px);
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0 0 28px;
  color: var(--ink);
}
.detail-title em { font-style: italic; color: var(--accent); }

.detail-oneliner {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.45;
  color: var(--ink-2);
  margin: 0 0 56px;
  max-width: 28ch;
  text-wrap: balance;
}

.detail-summary {
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-2);
  margin: 0 0 56px;
  max-width: 62ch;
}

/* hero visual */
.detail-visual {
  aspect-ratio: 16 / 9;
  border: 1px solid var(--hairline);
  border-radius: 16px;
  overflow: hidden;
  background: var(--surface);
  position: relative;
  margin-bottom: 64px;
}
.detail-visual.with-media {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--hairline);
  aspect-ratio: auto;
}
.detail-visual.with-media > * {
  background: var(--surface);
  aspect-ratio: 16 / 9;
}
.detail-visual .pattern {
  position: absolute; inset: 0;
}
.detail-visual .pattern svg { width: 100%; height: 100%; display: block; }

/* native-aspect detail visuals — used when the source media must be shown
   in its real aspect ratio (e.g. a wide product screenshot or portrait phone). */
.detail-visual.detail-visual-native {
  aspect-ratio: auto;
  border: 0;
  border-radius: 0;
  overflow: visible;
  background: transparent;
}

.opserver-shot img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--hairline);
  border-radius: 16px;
  background: var(--surface);
}

.sowouldyou-phones {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
}
.sowouldyou-phones video,
.sowouldyou-phones img {
  height: 460px;
  width: auto;
  display: block;
  border: 1px solid var(--hairline);
  border-radius: 22px;
  background: var(--surface);
  object-fit: cover;
}
@media (max-width: 720px) {
  .sowouldyou-phones video,
  .sowouldyou-phones img { height: auto; max-width: 30%; }
}

/* meta strip */
.detail-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 80px;
}
@media (min-width: 600px) {
  .detail-meta-grid { grid-template-columns: repeat(4, 1fr); }
}
.detail-meta-item {
  background: var(--surface);
  padding: 18px 22px;
}
.detail-meta-item .k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.detail-meta-item .v {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.5;
}

/* blocks */
.detail-block {
  margin-bottom: 72px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  scroll-margin-top: 160px;
}
@media (min-width: 700px) {
  .detail-block { grid-template-columns: 160px 1fr; gap: 40px; }
}
.detail-block-id {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.10em;
  color: var(--muted);
  text-transform: uppercase;
  display: flex; align-items: baseline; gap: 12px;
}
.detail-block-id .num { color: var(--accent); font-weight: 500; }

.detail-block-content {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}
.detail-block-content p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-2);
  max-width: 64ch;
}
.detail-block-content ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.detail-block-content ul li {
  position: relative;
  padding-left: 24px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-2);
  max-width: 64ch;
}
.detail-block-content ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.7em;
  width: 14px; height: 1px;
  background: var(--accent);
}

.detail-quote {
  border-left: 2px solid var(--accent);
  padding: 8px 0 8px 24px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--ink);
  margin: 0;
  max-width: 32ch;
}

.detail-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.detail-stack .stack-pill {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface);
}

.reference-links {
  display: grid;
  gap: 10px;
}
.reference-link {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  transition: transform 0.25s var(--ease), border-color 0.2s, background 0.2s;
}
.reference-link:hover {
  transform: translateY(-2px);
  border-color: var(--hairline-strong);
  background: var(--bg);
}
.reference-label {
  font-size: 15px;
  font-weight: 600;
}
.reference-url {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  word-break: break-all;
}
.reference-note {
  color: var(--muted);
}
.credential-card {
  display: grid;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--hairline);
  border-radius: 16px;
  background: color-mix(in srgb, var(--surface) 88%, var(--accent) 12%);
}
@media (min-width: 720px) {
  .credential-card {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}
.credential-label {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}
.credential-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}
.credential-values {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
}
.credential-values span {
  padding: 7px 10px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--bg);
  color: var(--ink);
}
.architecture-chart {
  overflow-x: auto;
  padding: 18px;
  border: 1px solid var(--hairline);
  border-radius: 16px;
  background: #fbfaf6;
}
.architecture-chart svg {
  min-width: 760px;
  max-width: none;
  height: auto;
}
@media (min-width: 1000px) {
  .architecture-chart svg {
    min-width: 0;
    width: 100%;
  }
}

/* foot nav (large prev/next) */
.detail-footnav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter) 80px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 700px) {
  .detail-footnav { grid-template-columns: 1fr 1fr; }
}
.foot-nav-btn {
  border: 1px solid var(--hairline);
  border-radius: 16px;
  padding: 26px 28px;
  text-align: left;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.2s, background 0.2s, transform 0.3s var(--ease);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.foot-nav-btn:hover {
  border-color: var(--hairline-strong);
  background: var(--bg);
  transform: translateY(-2px);
}
.foot-nav-btn:disabled { opacity: 0.35; cursor: default; transform: none; }
.foot-nav-btn .label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.10em;
  color: var(--muted);
  text-transform: uppercase;
}
.foot-nav-btn .target-name {
  font-family: var(--font-serif);
  font-size: 28px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.foot-nav-btn .target-ol {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0;
  max-width: 48ch;
}
.foot-nav-btn.next { text-align: right; align-items: flex-end; }
.foot-nav-btn.next .target-ol { text-align: right; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 60px var(--gutter) 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  font-size: 13px;
  color: var(--muted);
  max-width: var(--max);
  margin: 0 auto;
}
@media (min-width: 760px) {
  .site-footer { grid-template-columns: 1.5fr 1fr 1fr; }
}
.footer-mark {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 400;
  color: var(--ink);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
  line-height: 1.3;
  word-break: keep-all;
}
.footer-mark em { font-style: italic; color: var(--accent); }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
  font-weight: 500;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-col a { color: var(--ink-2); transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }

.footer-mono {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  margin-top: 6px;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------- Keyboard hint ---------- */
.kbd-hint {
  position: fixed;
  bottom: 22px;
  right: 22px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted);
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 8px 14px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  border: 1px solid var(--hairline);
  border-radius: 999px;
  backdrop-filter: blur(6px);
  z-index: 60;
  opacity: 0.8;
  transition: opacity 0.3s;
}
.kbd-hint:hover { opacity: 1; }
.kbd-hint kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 6px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  color: var(--ink);
  background: var(--bg);
}
@media (max-width: 720px) { .kbd-hint { display: none; } }

/* ---------- Patterns palette ---------- */
.pattern-bg {
  background:
    radial-gradient(circle at 20% 30%, var(--accent-soft) 0%, transparent 40%),
    var(--surface);
}

@media (max-width: 720px) {
  .nav { display: none; }
  .hero-headline { font-size: 13vw; }
  .section-head { margin-bottom: 40px; }
}