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

:root {
  --bg: #080808;
  --surface: #111;
  --border: #1e1e1e;
  --text: #d8d8d8;
  --muted: #aaa;
  --accent: #fff;
  --font-serif: Georgia, 'Times New Roman', serif;
  --font-mono: 'SF Mono', 'Fira Mono', 'Courier New', monospace;
}

html { background: var(--bg); color: var(--text); font-family: var(--font-serif); }
body { min-height: 100vh; }
.hidden { display: none !important; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

/* ── Header ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 2rem 4rem;
  border-bottom: 1px solid var(--border);
}

.header-left {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.site-name {
  font-size: 1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--font-mono);
}

.byline {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

/* ── Channel navigation ── */
.channel-nav {
  display: flex;
  gap: 0.25rem;
}

.ch-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.ch-btn:hover {
  border-color: #444;
  color: var(--text);
}

.ch-btn.active {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Channel description ── */
.channel-desc {
  padding: 0.9rem 4rem;
  border-bottom: 1px solid var(--border);
  min-height: 2.8rem;
}

.channel-desc p {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--muted);
  letter-spacing: 0.04em;
  line-height: 1.6;
}

/* ── Featured ── */
#featured {
  padding: 4rem 4rem 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

#featured-image-wrap {
  width: 100%;
  margin-bottom: 1.5rem;
}

#featured-img {
  width: 100%;
  height: auto;
  display: block;
}

#featured-footer {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
}

#featured-meta {
  display: flex;
  align-items: baseline;
  gap: 2rem;
}

/* ── Day navigation ── */
#day-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.day-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  width: 2rem;
  height: 2rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.day-btn:hover:not(:disabled) {
  border-color: #444;
  color: var(--text);
}

.day-btn:disabled {
  opacity: 0.25;
  cursor: default;
}

#day-counter {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  color: var(--muted);
  letter-spacing: 0.1em;
  min-width: 4rem;
  text-align: center;
}

#featured-title {
  font-size: 1rem;
  font-weight: normal;
  letter-spacing: 0.05em;
  color: var(--accent);
}

#featured-date {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--muted);
  letter-spacing: 0.08em;
}

/* ── Notebook hint label (next to date) ── */
.notebook-hint {
  display: inline-flex;
  align-items: baseline;
  position: relative;
}

.notebook-hint-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: default;
  border-bottom: 1px solid #333;
  padding-bottom: 1px;
  transition: color 0.2s ease, border-color 0.2s ease;
  user-select: none;
}

.notebook-hint:hover .notebook-hint-label,
.notebook-hint:focus-within .notebook-hint-label {
  color: var(--accent);
  border-color: var(--accent);
}

/* ── Notebook expand panel ── */
.notebook-panel {
  overflow: hidden;
  max-height: 2000px;
  transition: max-height 0.5s ease, opacity 0.3s ease, padding 0.3s ease;
  opacity: 1;
  padding: 1.1rem 0 0.25rem;
  border-top: 1px solid var(--border);
  margin-top: 0.6rem;
}

.notebook-panel.collapsed {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
  border-top-color: transparent;
  margin-top: 0;
}

.notebook-panel p {
  font-family: var(--font-serif);
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--muted);
  max-width: 72ch;
}

/* ── Notebook archive tab ── */
#notebook-view {
  max-width: 760px;
  margin: 0 auto;
  padding: 5rem 4rem 6rem;
}

.nb-entry {
  padding-bottom: 3.5rem;
  margin-bottom: 3.5rem;
  border-bottom: 1px solid var(--border);
}

.nb-entry:last-child {
  border-bottom: none;
}

.nb-date {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.nb-channel-block {
  margin-bottom: 2rem;
}

.nb-channel-block:last-child {
  margin-bottom: 0;
}

.nb-channel-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.6rem;
  opacity: 0.6;
}

.nb-text {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--text);
  max-width: 66ch;
}

/* ── Archive ── */
#archive {
  padding: 3rem 4rem 4rem;
  max-width: 1400px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
}

#archive h2 {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2rem;
  font-weight: normal;
}

#archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2px;
}

.archive-item {
  cursor: pointer;
  overflow: hidden;
  background: var(--surface);
}

.archive-item img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.archive-item:hover img { opacity: 1; }

.archive-item.active img {
  opacity: 1;
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.archive-title {
  padding: 0.6rem 0.8rem 0.2rem;
  font-size: 0.75rem;
  color: var(--text);
  letter-spacing: 0.02em;
}

.archive-date {
  padding: 0 0.8rem 0.7rem;
  font-size: 0.62rem;
  font-family: var(--font-mono);
  color: var(--muted);
  letter-spacing: 0.06em;
}

/* ── Footer ── */
footer {
  padding: 2.5rem 4rem;
  border-top: 1px solid var(--border);
  font-size: 0.68rem;
  font-family: var(--font-mono);
  color: var(--muted);
  line-height: 1.8;
  letter-spacing: 0.04em;
}

/* ── Empty state ── */
.empty {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  padding: 5rem 0;
  text-align: center;
}

/* ── Lightbox ── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox.hidden { display: none; }

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.93);
}

.lightbox-content {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
}

.lightbox-meta {
  display: flex;
  gap: 1.5rem;
  align-items: baseline;
}

.lightbox-title {
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.lightbox-date {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  color: var(--muted);
}

.lightbox-close {
  position: absolute;
  top: -2.5rem;
  right: 0;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1rem;
  cursor: pointer;
  padding: 0.5rem;
}

.lightbox-close:hover { color: var(--accent); }

/* ── Rejection explainer ── */
#rejection-explainer {
  max-width: 680px;
  margin: 0;
  padding: 1.5rem 4rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

#rejection-explainer p {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.7;
  letter-spacing: 0.02em;
  margin-bottom: 0.6rem;
}

#rejection-explainer p:last-child {
  margin-bottom: 0;
}

#rejection-explainer strong {
  color: var(--text);
  font-weight: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.65rem;
}

/* ── Rejections panel ── */
#rejections-view {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 0 3rem;
}

#rejection-panel {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 2rem 4rem 0;
}

#rejection-image-wrap img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0.85;
}

#rejection-meta {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

#rejection-verdict h2 {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: normal;
  margin-bottom: 0.6rem;
}

#rejection-reason {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text);
  max-width: 72ch;
}

.rejection-label {
  font-size: 0.62rem;
  font-family: var(--font-mono);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

#rejection-prompt {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--muted);
  line-height: 1.6;
  max-width: 80ch;
}

#rejection-info-row {
  display: flex;
  gap: 2rem;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  color: var(--muted);
  letter-spacing: 0.06em;
}

#rejection-pagination {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.rej-nav-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.rej-nav-btn:hover:not(:disabled) {
  border-color: #444;
  color: var(--text);
}

.rej-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

#rej-counter {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  color: var(--muted);
  letter-spacing: 0.1em;
}

/* ── About panel ── */
#about-view {
  max-width: 760px;
  margin: 0 auto;
  padding: 5rem 4rem 6rem;
  font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
}

#about-view .about-label {
  font-size: 0.62rem;
  font-family: var(--font-mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: normal;
  margin-bottom: 2.5rem;
  display: block;
}

.about-body p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
  margin-bottom: 1.6rem;
  letter-spacing: 0.01em;
  font-weight: normal;
}

.about-body em {
  font-style: italic;
  color: var(--accent);
}

.about-pipeline {
  margin-top: 3rem;
  border-top: 1px solid var(--border);
  padding-top: 2.5rem;
}

.about-pipeline-label {
  font-size: 0.62rem;
  font-family: var(--font-mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: normal;
  margin-bottom: 1.5rem;
  display: block;
}

.pipeline-step {
  display: -webkit-flex;
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1rem;
  -webkit-align-items: baseline;
  align-items: baseline;
}

.pipeline-step-name {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  min-width: 7rem;
  -webkit-flex-shrink: 0;
  flex-shrink: 0;
}

.pipeline-step-desc {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  header { padding: 1.25rem 1.5rem; flex-direction: column; align-items: flex-start; gap: 1rem; }
  .channel-desc { padding: 0.75rem 1.5rem; }
  #featured { padding: 2rem 1.5rem; }
  #featured-footer { flex-direction: column; gap: 1rem; align-items: flex-start; }
  #featured-meta { flex-direction: column; gap: 0.4rem; }
  #archive { padding: 2rem 1.5rem; }
  #archive-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  footer { padding: 2rem 1.5rem; }
  #notebook-view { padding: 3rem 1.5rem 4rem; }
  .notebook-hint-label { padding: 0.5rem 0; }
  .notebook-panel p { max-width: 100%; }
}