/* 주간실험실 허브 — 실험 노트 콘셉트: 모눈종이 바탕, 잉크색 글자, 신호 주황 포인트 */

:root {
  --paper: #f6f3ec;
  --paper-deep: #ece7db;
  --grid: rgba(30, 41, 59, 0.06);
  --ink: #18202e;
  --ink-soft: #4a5466;
  --ink-faint: #8a92a0;
  --line: rgba(24, 32, 46, 0.14);
  --signal: #e8572a;
  --signal-soft: rgba(232, 87, 42, 0.12);
  --live: #1f9d6b;
  --card: #fffdf8;
  --shadow: 0 1px 0 rgba(24, 32, 46, 0.06), 0 12px 32px -16px rgba(24, 32, 46, 0.28);

  --font-sans: 'IBM Plex Sans KR', system-ui, -apple-system, 'Apple SD Gothic Neo', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', monospace;

  --text-hero: clamp(2.4rem, 1.2rem + 5.4vw, 5.2rem);
  --space-section: clamp(4.5rem, 3rem + 6vw, 9rem);
  --radius: 14px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* 어두운 테마: OS 설정을 따르되, 콘솔의 theme 명령으로 고른 값(data-theme)이 우선한다. */
:root[data-theme='dark'] {
  --paper: #12161e;
  --paper-deep: #181d27;
  --grid: rgba(226, 232, 240, 0.045);
  --ink: #eef1f5;
  --ink-soft: #a9b1be;
  --ink-faint: #6c7584;
  --line: rgba(226, 232, 240, 0.12);
  --signal: #ff7a4d;
  --signal-soft: rgba(255, 122, 77, 0.14);
  --live: #3ccf93;
  --card: #1a1f2a;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.4), 0 16px 40px -20px rgba(0, 0, 0, 0.8);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    color-scheme: dark;
    --paper: #12161e;
    --paper-deep: #181d27;
    --grid: rgba(226, 232, 240, 0.045);
    --ink: #eef1f5;
    --ink-soft: #a9b1be;
    --ink-faint: #6c7584;
    --line: rgba(226, 232, 240, 0.12);
    --signal: #ff7a4d;
    --signal-soft: rgba(255, 122, 77, 0.14);
    --live: #3ccf93;
    --card: #1a1f2a;
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.4), 0 16px 40px -20px rgba(0, 0, 0, 0.8);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.75;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.wrap {
  width: min(1120px, 100% - 32px);
  margin-inline: auto;
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── 상단 ─────────────────────────────── */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  border-bottom: 1px solid var(--line);
}

.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
}

.nav {
  display: flex;
  gap: 4px;
}

.nav a {
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 0.92rem;
  text-decoration: none;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.nav a:hover,
.nav a:focus-visible {
  background: var(--paper-deep);
  color: var(--ink);
}

/* ── 히어로 ───────────────────────────── */

.hero {
  padding-block: clamp(4rem, 2rem + 8vw, 8.5rem) var(--space-section);
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  color: var(--ink-soft);
}

.hero-label::before {
  content: '';
  width: 28px;
  height: 1px;
  background: currentColor;
}

.hero h1 {
  margin: 0;
  max-width: 14ch;
  font-size: var(--text-hero);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

/* 형광펜 밑줄. 줄이 바뀌어도 줄마다 이어지도록 배경 그라디언트 + clone 으로 그린다. */
.hero h1 em {
  font-style: normal;
  color: var(--signal);
  background: linear-gradient(transparent 72%, var(--signal-soft) 72%, var(--signal-soft) 92%, transparent 92%);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.hero-lede {
  max-width: 38rem;
  margin: 32px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 0.98rem + 0.35vw, 1.25rem);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px dashed var(--line);
  color: var(--ink-faint);
}

.hero-meta strong {
  color: var(--ink);
  font-weight: 600;
}

/* ── 섹션 공통 ────────────────────────── */

.section {
  padding-bottom: var(--space-section);
}

.section-head {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  align-items: baseline;
  margin-bottom: 40px;
}

.section-head .mono {
  color: var(--signal);
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: -0.025em;
}

/* ── 실험 카드 ────────────────────────── */

/* 서비스가 늘어나면 칸이 자동으로 늘어난다. featured 카드는 넓은 화면에서 두 칸을 차지한다. */
.experiments {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 20px;
}

@media (min-width: 821px) {
  .exp.featured {
    grid-column: span 2;
  }
}

.exp {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

a.exp:hover,
a.exp:focus-visible {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--signal) 45%, var(--line));
  outline: none;
}

.exp-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--ink-faint);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-transform: none;
}

.status::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ink-faint);
}

.status.live {
  color: var(--live);
  border-color: color-mix(in srgb, var(--live) 35%, transparent);
}

.status.live::before {
  background: var(--live);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--live) 20%, transparent);
  animation: pulse 2.4s var(--ease) infinite;
}

@keyframes pulse {
  50% {
    box-shadow: 0 0 0 7px transparent;
  }
}

.exp h3 {
  margin: 48px 0 6px;
  font-size: clamp(1.8rem, 1.4rem + 1.4vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.exp .domain {
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.exp p {
  margin: 20px 0 0;
  color: var(--ink-soft);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.tags li {
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--paper-deep);
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.exp-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 32px;
  font-weight: 600;
}

.exp-cta span {
  transition: transform 0.35s var(--ease);
}

a.exp:hover .exp-cta span {
  transform: translateX(6px);
}

.exp.pending {
  background: transparent;
  box-shadow: none;
  border-style: dashed;
}

.exp.pending h3 {
  color: var(--ink-faint);
}

/* ── 원칙 ─────────────────────────────── */

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
}

.principle {
  padding: 28px 28px 8px 0;
}

.principle + .principle {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.principle .mono {
  color: var(--ink-faint);
}

.principle h3 {
  margin: 14px 0 8px;
  font-size: 1.2rem;
  letter-spacing: -0.015em;
}

.principle p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

/* ── 연락 ─────────────────────────────── */

.contact {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: clamp(28px, 4vw, 48px);
  border-radius: calc(var(--radius) + 6px);
  background: var(--ink);
  color: var(--paper);
}

.contact h2 {
  margin: 0 0 6px;
  font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2rem);
  letter-spacing: -0.02em;
}

.contact p {
  margin: 0;
  opacity: 0.7;
}

.mail {
  padding: 14px 22px;
  border-radius: 999px;
  background: var(--signal);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.25s var(--ease), filter 0.25s var(--ease);
}

.mail:hover,
.mail:focus-visible {
  transform: translateY(-2px);
  filter: brightness(1.08);
}

/* ── 하단 ─────────────────────────────── */

.footer {
  padding-block: 32px 48px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 0.9rem;
}

.footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

.footer a {
  text-decoration: none;
}

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

/* ── 문서 페이지(개인정보처리방침) ─────── */

.doc {
  max-width: 46rem;
  padding-block: clamp(3rem, 2rem + 4vw, 6rem) var(--space-section);
}

.doc h1 {
  margin: 0 0 8px;
  font-size: clamp(2rem, 1.5rem + 2vw, 3rem);
  letter-spacing: -0.03em;
}

.doc h2 {
  margin: 48px 0 8px;
  font-size: 1.25rem;
}

.doc p,
.doc li {
  color: var(--ink-soft);
}

/* ── 모눈 조명 + 좌표 ─────────────────── */

.grid-light {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  /* 커서가 있는 칸 둘레만 모눈선을 진하게 다시 그린다. */
  background-image:
    linear-gradient(var(--signal-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--signal-soft) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-mask-image: radial-gradient(180px circle at var(--mx, -999px) var(--my, -999px), #000 0%, transparent 70%);
  mask-image: radial-gradient(180px circle at var(--mx, -999px) var(--my, -999px), #000 0%, transparent 70%);
}

.grid-light::after {
  content: '';
  position: absolute;
  left: calc(var(--mx, -999px) - 14px);
  top: calc(var(--my, -999px) - 14px);
  width: 28px;
  height: 28px;
  background: var(--signal-soft);
  transition: left 0.12s var(--ease), top 0.12s var(--ease);
}

.coords {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 5;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.pointer-active .grid-light,
.pointer-active .coords {
  opacity: 1;
}

/* ── 명령 버튼·키 표시 ────────────────── */

kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--card);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.5;
  text-transform: none;
  letter-spacing: 0;
}

.kbd-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 6px;
  padding: 5px 8px 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink-soft);
  font: inherit;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.kbd-btn:hover,
.kbd-btn:focus-visible {
  border-color: var(--signal);
  color: var(--ink);
}

.kbd-btn .mono {
  font-size: 0.72rem;
}

.hero-meta .hint {
  margin-left: auto;
}

/* ── CertNote 수치 ────────────────────── */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 28px 0 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--line);
}

.stats div {
  padding: 14px 16px;
  background: var(--card);
}

.stats dt {
  color: var(--ink-faint);
  font-size: 0.78rem;
}

.stats dd {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

/* ── 실험 일지 타임라인 ───────────────── */

.timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 180px;
  width: 1px;
  background: linear-gradient(var(--line), var(--line) 85%, transparent);
}

.entry {
  position: relative;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 0 40px;
  padding-bottom: 36px;
}

.entry::before {
  content: '';
  position: absolute;
  left: 175px;
  top: 7px;
  width: 11px;
  height: 11px;
  border: 2px solid var(--ink-faint);
  border-radius: 50%;
  background: var(--paper);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.entry:hover::before {
  border-color: var(--signal);
  transform: scale(1.25);
}

.entry.highlight::before {
  border-color: var(--signal);
  background: var(--signal);
}

.entry time {
  padding-top: 2px;
  color: var(--ink-faint);
}

.entry-tag {
  color: var(--signal);
  font-size: 0.7rem;
}

.entry h3 {
  margin: 4px 0 6px;
  font-size: 1.15rem;
  letter-spacing: -0.015em;
}

.entry p {
  max-width: 42rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.entry[hidden],
.log-more[hidden] {
  display: none;
}

.log-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.log-filters:empty {
  display: none;
}

.filter-chip {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink-soft);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.filter-chip:hover,
.filter-chip:focus-visible {
  border-color: var(--signal);
  color: var(--ink);
}

.filter-chip[aria-pressed='true'] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.log-more {
  margin-left: 220px;
  padding: 8px 16px;
  border: 1px dashed var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}

.log-more:hover,
.log-more:focus-visible {
  border-color: var(--signal);
  color: var(--ink);
}

/* ── 광고 칸 ──────────────────────────── */

.ad-slot {
  display: block;
  margin-bottom: var(--space-section);
}

/* "광고" 표시는 실제로 채워졌을 때만 보인다. */
.ad-label {
  display: block;
  margin-bottom: 6px;
  color: var(--ink-faint);
  font-size: 0.68rem;
  visibility: hidden;
}

.ad-slot:has(ins[data-ad-status='filled']) .ad-label {
  visibility: visible;
}

/* 광고가 없으면(재고 없음) 빈 칸을 남기지 않고 접는다. */
.ad-slot:has(ins[data-ad-status='unfilled']) {
  display: none;
}

/* ── 명령 팔레트 ──────────────────────── */

.palette {
  width: min(640px, 100% - 32px);
  max-height: min(560px, 100dvh - 64px);
  margin: 12vh auto auto;
  padding: 0;
  border: 1px solid #2a3140;
  border-radius: 14px;
  background: #0f131b;
  color: #d7dde7;
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}

.palette[open] {
  display: flex;
  flex-direction: column;
  animation: pop 0.28s var(--ease);
}

.palette::backdrop {
  background: rgba(10, 13, 20, 0.45);
  backdrop-filter: blur(3px);
}

@keyframes pop {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
}

.palette-head {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid #222936;
  color: #7d8796;
}

.palette-head kbd {
  border-color: #2a3140;
  background: #171c26;
  color: #9aa4b2;
}

.palette-out {
  flex: 1;
  min-height: 160px;
  padding: 14px 16px 4px;
  overflow-y: auto;
  font-size: 0.85rem;
  text-transform: none;
  letter-spacing: 0;
  white-space: pre-wrap;
}

.line.cmd { color: #ffb08f; }
.line.dim { color: #6f7988; }
.line.err { color: #ff8a8a; }

.palette-form {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  text-transform: none;
  letter-spacing: 0;
}

.prompt {
  color: #ff7a4d;
  font-size: 1rem;
}

.palette-form input {
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  color: #eef1f5;
  font: 500 0.95rem var(--font-mono);
  caret-color: #ff7a4d;
}

.palette-form input::placeholder {
  color: #566070;
}

.palette-hints {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 16px 14px;
}

.hint-chip {
  padding: 3px 10px;
  border: 1px solid #2a3140;
  border-radius: 999px;
  background: #171c26;
  color: #aab3c0;
  font-size: 0.72rem;
  text-transform: none;
  letter-spacing: 0;
  cursor: pointer;
}

.hint-chip:hover,
.hint-chip:focus-visible {
  border-color: #ff7a4d;
  color: #fff;
  outline: none;
}

/* ── 등장 모션 ────────────────────────── */

.reveal {
  animation: rise 0.9s var(--ease) both;
}

.reveal:nth-child(2) { animation-delay: 0.08s; }
.reveal:nth-child(3) { animation-delay: 0.16s; }
.reveal:nth-child(4) { animation-delay: 0.24s; }

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* ── 반응형 ───────────────────────────── */

@media (max-width: 820px) {
  .principles {
    grid-template-columns: 1fr;
  }

  .log-more {
    margin-left: 32px;
  }

  .principle,
  .principle + .principle {
    padding: 24px 0 16px;
    border-left: 0;
  }

  .principle + .principle {
    border-top: 1px solid var(--line);
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .timeline::before {
    left: 5px;
  }

  .entry {
    grid-template-columns: 1fr;
    padding-left: 32px;
  }

  .entry::before {
    left: 0;
  }

  .hero-meta .hint {
    display: none;
  }
}

@media (max-width: 480px) {
  .nav a,
  .kbd-btn kbd {
    display: none;
  }

  .exp {
    padding: 22px;
  }
}