:root {
  --bg: #0c0c0d;
  --bg-alt: #141416;
  --card: #1a1a1c;
  --border: #2a2a2d;
  --text: #ececec;
  --text-dim: #9a9a9e;
  --accent: #e8b13a; /* warm spotlight amber */
  --accent-dim: #6b5423;
  --max-width: 1160px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 12, 13, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  font-size: 15px;
  letter-spacing: 0.12em;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.brand small {
  font-size: 10px;
  color: var(--text-dim);
  letter-spacing: 0.2em;
  font-weight: 400;
}

nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: 32px;
  margin: 0;
  padding: 0;
}
nav.main-nav a {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  transition: color 0.2s;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}
nav.main-nav a:hover,
nav.main-nav a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

@media (max-width: 640px) {
  nav.main-nav ul { gap: 18px; }
  nav.main-nav a { font-size: 11px; }
}

/* Hero */
.hero {
  position: relative;
  height: 78vh;
  min-height: 460px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}
.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.6s ease;
}
.hero-slide.active { opacity: 1; }
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12,12,13,0.15) 0%, rgba(12,12,13,0.55) 60%, rgba(12,12,13,0.95) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 24px 56px;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}
.hero-eyebrow {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.3em;
  margin-bottom: 14px;
}
.hero-title {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin: 0 0 18px;
  line-height: 1.4;
}
.hero-lead {
  color: var(--text-dim);
  font-size: 15px;
  max-width: 520px;
}

/* Sections */
section { padding: 96px 0; border-bottom: 1px solid var(--border); }
section:last-of-type { border-bottom: none; }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 44px;
  flex-wrap: wrap;
  gap: 12px;
}
.section-eyebrow {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.25em;
  margin-bottom: 10px;
}
.section-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin: 0;
}
.section-link {
  font-size: 13px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}
.section-link:hover { color: var(--accent); border-color: var(--accent); }

.lead-text {
  color: var(--text-dim);
  font-size: 15px;
  max-width: 640px;
}

/* Philosophy grid */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
@media (max-width: 800px) {
  .philosophy-grid { grid-template-columns: 1fr; }
}
.philosophy-item {
  border-top: 1px solid var(--accent-dim);
  padding-top: 18px;
}
.philosophy-item .num {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.15em;
  display: block;
  margin-bottom: 10px;
}
.philosophy-item h3 {
  font-size: 17px;
  margin: 0 0 10px;
}
.philosophy-item p {
  color: var(--text-dim);
  font-size: 14px;
  margin: 0;
}

/* Works grid */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}
@media (max-width: 900px) {
  .works-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .works-grid { grid-template-columns: 1fr; }
}

.work-card {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--card);
  display: block;
}
.work-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease, filter 0.5s ease;
  filter: grayscale(15%) brightness(0.9);
}
.work-card:hover img {
  transform: scale(1.05);
  filter: grayscale(0%) brightness(1);
}
.work-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12,12,13,0) 40%, rgba(12,12,13,0.92) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 16px;
}
.work-card .tag {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 6px;
  text-transform: uppercase;
}
.work-card .title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}
.work-card .year {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* Filters */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}
.filter-btn {
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-dim);
  cursor: pointer;
  background: transparent;
}
.filter-btn:hover { border-color: var(--accent); color: var(--text); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: #1a1400; }

.result-count {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 24px;
}

/* Process section (home) */
.process-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
@media (max-width: 900px) {
  .process-flow { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .process-flow { grid-template-columns: repeat(2, 1fr); }
}
.process-step {
  border: 1px solid var(--border);
  padding: 20px;
  background: var(--bg-alt);
}
.process-step .step-num {
  color: var(--accent);
  font-size: 20px;
  font-weight: 700;
  display: block;
  margin-bottom: 12px;
}
.process-step h4 { margin: 0 0 8px; font-size: 14px; }
.process-step p { margin: 0; color: var(--text-dim); font-size: 13px; }

/* Company / about */
.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.info-table tr { border-bottom: 1px solid var(--border); }
.info-table th {
  text-align: left;
  color: var(--text-dim);
  font-weight: 400;
  padding: 16px 24px 16px 0;
  width: 160px;
  vertical-align: top;
}
.info-table td { padding: 16px 0; }

/* Footer */
footer.site-footer {
  padding: 48px 0;
  color: var(--text-dim);
  font-size: 12px;
}
footer.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
footer .foot-links { display: flex; gap: 20px; }
footer .foot-links a:hover { color: var(--accent); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.1em;
}
.btn:hover { background: var(--accent); color: #1a1400; }

/* Work detail page */
.work-hero {
  height: 60vh;
  min-height: 360px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: flex-end;
}
.work-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12,12,13,0.1), rgba(12,12,13,0.95));
}
.work-hero-content {
  position: relative;
  z-index: 2;
  padding: 0 24px 40px;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}
.breadcrumb {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 40px;
}
.breadcrumb a:hover { color: var(--accent); }

.meta-row {
  display: flex;
  gap: 24px;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}
.meta-row .tag { color: var(--accent); }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}
@media (max-width: 900px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .gallery-grid { grid-template-columns: 1fr; } }
.gallery-grid img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  cursor: zoom-in;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 40px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 100%; max-height: 100%; }
.lightbox-close {
  position: absolute;
  top: 24px; right: 32px;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
}

.edit-note {
  background: var(--bg-alt);
  border: 1px dashed var(--accent-dim);
  color: var(--text-dim);
  font-size: 12px;
  padding: 12px 16px;
  margin-bottom: 32px;
}
.edit-note strong { color: var(--accent); }

.placeholder-text { color: var(--text-dim); font-style: italic; }