/* ── Reset & Custom Properties ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Dark palette (default) */
  --bg:         #060D09;
  --bg-raised:  #0C1812;
  --bg-seg:     #0C1812;
  --bg-seg-hov: #1A3828;
  --border:     #122A1A;
  --text:       #8FBFAA;
  --accent:     #2A8058;
  --muted:      #2A5040;
  --success:    #5a9e70;
  --error:      #c47c6a;

  /* Radii */
  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --radius-pill: 999px;

  /* Typography */
  --font-display: 'Syne', system-ui, sans-serif;
  --font-sans:    'DM Sans', system-ui, sans-serif;

  /* Layout */
  --gap:   clamp(1rem, 4vw, 2.5rem);
  --nav-h: 4.5rem;
}

/* ── Light mode overrides ───────────────────────────────────────── */
body[data-ptarmigan-theme="light"] {
  --bg:         #C8DFF0;
  --bg-raised:  #B0CDE6;
  --bg-seg:     #B0CDE6;
  --bg-seg-hov: #9ABCDC;
  --border:     #7AAACF;
  --text:       #0D3556;
  --accent:     #1A5FA0;
  --muted:      #5A8DB8;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.3s, color 0.3s;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ── Navigation ─────────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem var(--gap);
  background: rgba(6, 13, 9, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, background 0.3s;
}

body[data-ptarmigan-theme="light"] nav {
  background: rgba(200, 223, 240, 0.88);
}

nav.scrolled { border-bottom-color: var(--border); }

.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: var(--text);
  opacity: 0.9;
  transition: color 0.2s;
}

.nav-pills {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.nav-pill {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.nav-pill .material-symbols-outlined {
  font-size: 18px;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  user-select: none;
}

.nav-pill:hover {
  background: var(--bg-raised);
  color: var(--text);
  border-color: var(--accent);
}

.nav-pill.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.nav-pill.active .material-symbols-outlined {
  font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

@media (max-width: 480px) {
  nav { padding: 0.75rem var(--gap); }
  :root { --nav-h: 4rem; }
}

/* ── Page wrapper ───────────────────────────────────────────────── */
main { flex: 1; padding-top: var(--nav-h); }

.page-header {
  padding: 3rem var(--gap) 2rem;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-header .meta {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.5rem;
}

/* ── Homepage / Wheel ───────────────────────────────────────────── */
.home-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--nav-h));
  gap: 1.5rem;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.wheel-container {
  width: min(88vw, 460px);
  aspect-ratio: 1;
  opacity: 0;
  animation: fadeUp 0.7s ease 0.2s forwards;
}

.wheel-container svg { width: 100%; height: 100%; overflow: visible; }

.segment-group {
  cursor: pointer;
  outline: none;
}

.wheel-segment {
  fill: var(--bg-seg);
  stroke: var(--bg);
  stroke-width: 4;
  transition: fill 0.25s ease;
}

.segment-group:hover .wheel-segment,
.segment-group:focus-visible .wheel-segment { fill: var(--bg-seg-hov); }

.wheel-label {
  fill: var(--muted);
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
  transition: fill 0.25s ease;
}

.segment-group:hover .wheel-label,
.segment-group:focus-visible .wheel-label { fill: var(--accent); }

.wheel-center-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  fill: var(--text);
  text-anchor: middle;
  dominant-baseline: middle;
  letter-spacing: 0.05em;
  pointer-events: none;
}

.wheel-center-sub {
  font-family: var(--font-sans);
  font-size: 7.5px;
  fill: var(--muted);
  text-anchor: middle;
  dominant-baseline: middle;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  pointer-events: none;
}

/* ── Photography Gallery ────────────────────────────────────────── */
.gallery-grid {
  columns: 2;
  column-gap: 3px;
  padding: 3px;
}

@media (min-width: 580px)  { .gallery-grid { columns: 3; } }
@media (min-width: 960px)  { .gallery-grid { columns: 4; } }
@media (min-width: 1280px) { .gallery-grid { columns: 5; } }

.gallery-item {
  break-inside: avoid;
  margin-bottom: 3px;
  overflow: hidden;
  cursor: zoom-in;
  background: var(--bg-raised);
  border-radius: var(--radius-lg);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.gallery-item img.loaded {
  opacity: 1;
  transform: scale(1);
}

.gallery-item:hover img { transform: scale(1.03); }

/* ── Lightbox ───────────────────────────────────────────────────── */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(6, 13, 9, 0.97);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

body[data-ptarmigan-theme="light"] .lightbox {
  background: rgba(200, 223, 240, 0.97);
}

.lightbox.open { opacity: 1; pointer-events: all; }

.lightbox img {
  max-width: 92vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  opacity: 0;
  transform: scale(0.97);
  transition: opacity 0.25s 0.1s, transform 0.25s 0.1s;
}

.lightbox.open img { opacity: 1; transform: scale(1); }

.lightbox-close {
  position: absolute;
  top: 1.25rem; right: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
  padding: 0;
  font-size: 0; /* hide any text fallback */
}

.lightbox-close .material-symbols-outlined {
  font-size: 20px;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

.lightbox-close:hover { opacity: 1; }

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.8rem;
  height: 2.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s;
  padding: 0;
  font-size: 1.3rem;
  line-height: 1;
}

.lightbox-prev { left: 1.25rem; }
.lightbox-next { right: 1.25rem; }

.lightbox-prev:hover,
.lightbox-next:hover { opacity: 1; }

.lightbox-prev:disabled,
.lightbox-next:disabled { opacity: 0.18; cursor: default; }

@media (max-width: 580px) {
  .lightbox-prev { left: 0.5rem; }
  .lightbox-next { right: 0.5rem; }
  .lightbox img  { max-width: 80vw; }
}

/* ── Writing CV ─────────────────────────────────────────────────── */
.writing-wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: 1.5rem var(--gap) 5rem;
}

.works-list { margin-top: 1rem; }

.work-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1.4rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 0.6rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, background 0.2s;
}

.work-item:hover {
  border-color: var(--accent);
  background: var(--bg-raised);
}

.work-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  transition: color 0.2s;
}

.work-item:hover .work-title { color: var(--accent); }

.work-pub {
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin-top: 0.2rem;
}

.work-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.work-date {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  white-space: nowrap;
}

.work-arrow {
  color: var(--accent);
  font-size: 1rem;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.2s, transform 0.2s;
}

.work-item:hover .work-arrow { opacity: 1; transform: translateX(0); }

/* ── Contact ────────────────────────────────────────────────────── */
.contact-wrap {
  max-width: 560px;
  margin: 0 auto;
  padding: 2.5rem var(--gap) 5rem;
}

.contact-wrap .lead {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.form-group { margin-bottom: 1.6rem; }

.form-group label {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 400;
  padding: 0.85rem 1.25rem;
  outline: none;
  transition: border-color 0.2s;
  appearance: none;
}

.form-group textarea {
  border-radius: var(--radius-lg);
  min-height: 150px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); }

.btn-submit {
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  color: var(--accent);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.9rem 2.75rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn-submit:hover:not(:disabled) { background: var(--accent); color: var(--bg); }
.btn-submit:disabled { opacity: 0.5; cursor: not-allowed; }

.form-status {
  margin-top: 1.1rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  min-height: 1.2em;
}

.form-status.success { color: var(--success); }
.form-status.error   { color: var(--error); }

/* ── Footer ─────────────────────────────────────────────────────── */
footer {
  padding: 1.5rem var(--gap);
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}