/* Jonah Seidman — projects */

:root {
  --bg: #0c0b0a;
  --bg-soft: #100e0c;
  --panel: #16130f;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #ece7df;
  --muted: #9a9189;
  --faint: #6b635a;
  --accent: #e0a14a;
  --accent-soft: rgba(224, 161, 74, 0.14);
  --maxw: 1500px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--accent-soft); }

/* ---------- volume control ---------- */

.vol {
  position: fixed;
  top: clamp(0.8rem, 2vw, 1.4rem);
  right: clamp(0.8rem, 2vw, 1.4rem);
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 0.7rem 0.4rem 0.55rem;
  background: rgba(18, 16, 13, 0.6);
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}
.vol.hidden {
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
}
.vol-btn {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: none;
  background: none;
  color: var(--accent);
  cursor: pointer;
  border-radius: 50%;
  transition: color 0.2s, transform 0.15s;
}
.vol-btn:hover { transform: scale(1.08); }
.vol-range {
  -webkit-appearance: none;
  appearance: none;
  width: 88px;
  height: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  outline: none;
  cursor: pointer;
  accent-color: var(--accent);
}
.vol-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  box-shadow: 0 0 0 4px rgba(224, 161, 74, 0.18);
}
.vol-range::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: none;
  border-radius: 50%;
  background: var(--accent);
}

/* ---------- hero ---------- */

.hero {
  min-height: 72vh;
  display: flex;
  align-items: center;
  padding: 5rem clamp(1.2rem, 5vw, 3rem) 3.5rem;
}
.hero-inner { max-width: var(--maxw); margin: 0 auto; width: 100%; }
.hero-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  margin: 0 0 1.4rem;
}
.hero-title {
  font-size: clamp(3rem, 11vw, 7.5rem);
  line-height: 0.96;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--text);
  margin: 0 0 1.8rem;
}
.hero-intro {
  max-width: 60ch;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  line-height: 1.65;
  color: var(--muted);
  margin: 0 0 2.2rem;
}
.hero-cue {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.92rem;
  color: var(--muted);
  transition: color 0.2s;
}
.hero-cue:hover { color: var(--text); }
.hero-cue-arrow {
  display: inline-block;
  color: var(--accent);
  animation: bob 1.8s ease-in-out infinite;
}
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(4px); } }

/* ---------- timeline ---------- */

.timeline {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1rem clamp(1.2rem, 5vw, 3rem) 4rem;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 5.5rem;
  left: clamp(1.2rem, 5vw, 3rem);
  width: 2px;
  background: linear-gradient(180deg, transparent, var(--border-strong) 7%, var(--border-strong) 90%, transparent);
}

.era {
  position: relative;
  padding: 2.4rem 0 0.6rem clamp(1.5rem, 4.5vw, 3.2rem);
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.era.in { opacity: 1; transform: none; }

.era-head { position: relative; margin-bottom: 1.4rem; }
.era-dot {
  position: absolute;
  left: calc(-1 * clamp(1.5rem, 4.5vw, 3.2rem) - 5px);
  top: 0.7rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--bg), 0 0 0 6px var(--border-strong), 0 0 18px rgba(224, 161, 74, 0.55);
}
.era-num {
  display: inline-flex;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--accent);
}
.era-age {
  margin-left: 0.8rem;
  padding-left: 0.8rem;
  border-left: 1px solid var(--border-strong);
  color: var(--text);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  letter-spacing: 0.02em;
}
.era-name {
  font-size: clamp(1.6rem, 3.8vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0.15rem 0 0;
  line-height: 1.05;
}
.era-note {
  color: var(--muted);
  font-size: 1rem;
  margin: 0.5rem 0 0;
}
.era-note u {
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

/* ---------- projects ---------- */

.era-body { display: flex; flex-direction: column; gap: 1.5rem; }
.project {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s var(--ease) 0.05s, transform 0.55s var(--ease) 0.05s;
}
.project.in { opacity: 1; transform: none; }
.project-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--muted);
  margin: 0 0 0.7rem;
}

/* click-to-expand project context */
.proj-info {
  margin: 0 0 0.8rem;
  border-bottom: 1px solid var(--border);
}
.proj-info-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 0 0.6rem;
  color: var(--muted);
  transition: color 0.2s;
}
.proj-info-summary::-webkit-details-marker { display: none; }
.proj-info-summary:hover,
.proj-info[open] .proj-info-summary { color: var(--text); }
.proj-info-label {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.chev {
  color: var(--accent);
  font-size: 0.85rem;
  transition: transform 0.25s var(--ease);
}
.proj-info[open] .chev { transform: rotate(180deg); }
.proj-info-body {
  padding: 0 0 0.9rem;
  max-width: 68ch;
  animation: infoIn 0.3s var(--ease);
}
.proj-info-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}
@keyframes infoIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* age-grouped columns — each column led by a prominent age label */
.age-cols {
  display: flex;
  flex-wrap: wrap;
  gap: 2.2rem;
  align-items: start;
}
.age-col { flex: 1 1 300px; min-width: 0; }
/* divider between the separated age columns */
.age-col + .age-col {
  padding-left: 2.2rem;
  border-left: 1px solid var(--border-strong);
}
.age-col-head {
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--accent);
  margin: 0 0 0.9rem;
}
.age-col-grid { grid-template-columns: 1fr; }

/* row-major grid: reads left-to-right by number, packs wider with more columns */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 360px), 1fr));
  gap: 0.5rem;
  align-items: start;
}
.media-grid--single,
.media-grid--video {
  grid-template-columns: minmax(0, 820px);
}

.media {
  margin: 0;
  border-radius: 10px;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--border);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.media-image { cursor: zoom-in; }
.media-image:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px -22px rgba(0, 0, 0, 0.9);
}
.media img,
.media video {
  display: block;
  width: 100%;
  height: auto;
}
.media-cap {
  padding: 0.45rem 0.7rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 4rem clamp(1.2rem, 5vw, 3rem);
}
.footer-inner { max-width: var(--maxw); margin: 0 auto; }
.footer-lead {
  font-size: clamp(1.5rem, 3.6vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
}
.footer-links { font-size: 0.98rem; }
.footer-links a {
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.footer-links a:hover { border-bottom-color: var(--accent); }
.footer-meta { color: var(--faint); font-size: 0.82rem; margin: 1.6rem 0 0; }

/* ---------- lightbox ---------- */

.lb {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 5, 4, 0.93);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: clamp(1rem, 5vw, 4rem);
  animation: fade 0.2s ease;
}
.lb[hidden] { display: none; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.lb-img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
  box-shadow: 0 30px 90px -30px rgba(0, 0, 0, 0.9);
}
.lb-close,
.lb-nav {
  position: absolute;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-strong);
  color: var(--text);
  cursor: pointer;
  border-radius: 50%;
  display: grid;
  place-items: center;
  transition: background 0.2s, transform 0.2s;
}
.lb-close:hover,
.lb-nav:hover { background: rgba(255, 255, 255, 0.18); }
.lb-close {
  top: clamp(1rem, 3vw, 2rem);
  right: clamp(1rem, 3vw, 2rem);
  width: 46px;
  height: 46px;
  font-size: 1.6rem;
  line-height: 1;
}
.lb-nav { top: 50%; transform: translateY(-50%); width: 52px; height: 52px; font-size: 1.3rem; }
.lb-nav:hover { transform: translateY(-50%) scale(1.06); }
.lb-prev { left: clamp(0.6rem, 3vw, 2rem); }
.lb-next { right: clamp(0.6rem, 3vw, 2rem); }

@media (max-width: 560px) {
  .lb-nav { width: 42px; height: 42px; }
}

/* ---------- motion preference ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .era, .project { opacity: 1; transform: none; transition: none; }
  .hero-cue-arrow { animation: none; }
}