@charset "UTF-8";

/*
 * GTI — Advanced Luthierie & Design
 * Palette: #0a0a08 (bg), #f0ede6 (text), #6b21d6 (purple accent), #1a1a16 (card)
 * Fonts: Libre Baskerville (display), DIN Condensed (label/body)
 */

:root {
  --bg:          #0a0a08;
  --bg-card:     #111110;
  --bg-card2:    #161613;
  --text:        #f0ede6;
  --text-muted:  #6b6960;
  --text-dim:    #3a3935;
  --accent:      #6b21d6;
  --accent-warm: #4c1799;
  --border:      #252520;
  --border-mid:  #333330;
  --header-h:    72px;
}

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

html { scroll-behavior: smooth; overflow-y: scroll; scrollbar-gutter: stable; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'DIN Condensed', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Grain overlay */
.noise-overlay {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.55;
}

/* ─── Header ─── */
header {
  height: var(--header-h);
  position: fixed;
  top: 0; width: 100%;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.logo-container { display: flex; align-items: center; }
.brand-logo { height: 36px; width: auto; filter: invert(1) brightness(0.9); }

.header-nav {
  display: flex;
  gap: 36px;
}
.header-nav a {
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.25s;
}
.header-nav a:hover { color: var(--text); }

/* ─── Hero ─── */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding-top: var(--header-h);
}

.hero-img-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  filter: brightness(0.5) contrast(1.1) saturate(0.7);
  transform: scale(1.04);
  transition: transform 12s ease-out;
}

.hero:hover .hero-img { transform: scale(1.0); }

.hero-vignette {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(10,10,8,0.98) 0%, rgba(10,10,8,0.5) 40%, transparent 70%),
    linear-gradient(to right, rgba(10,10,8,0.7) 0%, transparent 60%);
}

.hero-content {
  position: relative;
  z-index: 10;
  padding: 0 64px 80px;
  max-width: 700px;
  animation: fadeUp 1.2s cubic-bezier(0.16,1,0.3,1) both;
  animation-delay: 0.3s;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16,1,0.3,1) forwards;
  animation-delay: 0.5s;
}
.eyebrow-line {
  display: block;
  width: 40px;
  height: 1px;
  background: var(--accent);
}

.hero-title {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 300;
  font-size: clamp(4rem, 9vw, 8rem);
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 1s cubic-bezier(0.16,1,0.3,1) forwards;
  animation-delay: 0.7s;
}
.hero-title em {
  font-style: italic;
  color: var(--accent);
}
.title-amp {
  font-family: 'Cormorant Garamond', serif;
  font-style: italic;
  color: var(--text-muted);
  font-size: 0.7em;
}

.hero-sub {
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.75rem;
  line-height: 1.8;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16,1,0.3,1) forwards;
  animation-delay: 0.9s;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--accent);
  padding: 14px 32px;
  text-decoration: none;
  transition: all 0.3s;
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16,1,0.3,1) forwards;
  animation-delay: 1.1s;
}
.hero-cta:hover {
  background: var(--text);
  letter-spacing: 0.28em;
}

/* Instrument label bottom-right */
.hero-instrument-label {
  position: absolute;
  z-index: 10;
  bottom: 80px;
  right: 64px;
  text-align: right;
  opacity: 0;
  animation: fadeUp 0.8s cubic-bezier(0.16,1,0.3,1) forwards;
  animation-delay: 1.3s;
}
.label-num {
  display: block;
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.label-model {
  display: block;
  font-family: 'Bebas Neue', sans-serif;
  font-size: 2.4rem;
  letter-spacing: 0.1em;
  color: var(--accent);
  line-height: 1;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  z-index: 10;
  bottom: 48px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-dim);
  opacity: 0;
  animation: fadeIn 1s ease forwards;
  animation-delay: 2s;
}
.scroll-line {
  display: block;
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, transparent, var(--text-dim));
  animation: scrollPulse 2s ease-in-out infinite;
}

/* ─── Section common ─── */
.portal-section,
.links-section {
  padding: 100px 64px;
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 56px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.section-num {
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
}
.section-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 400;
}

/* ─── Portal Grid ─── */
.portal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
}

.portal-card {
  position: relative;
  background: var(--bg-card);
  padding: 48px 40px 40px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  min-height: 280px;
  transition: background 0.35s;
  overflow: hidden;
}
.portal-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
}
.portal-card:hover {
  background: var(--bg-card2);
}
.portal-card:hover::after { transform: scaleX(1); }

.card-index {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 5rem;
  color: var(--text-dim);
  line-height: 1;
  margin-bottom: auto;
  transition: color 0.35s;
}
.portal-card:hover .card-index { color: var(--border-mid); }

.card-body { margin-top: 40px; }

.card-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.9rem;
  font-weight: 300;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 8px;
}
.card-desc {
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card-arrow {
  position: absolute;
  bottom: 32px;
  right: 32px;
  font-size: 1.1rem;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-8px);
  transition: all 0.3s;
}
.portal-card:hover .card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ─── Link List ─── */
.link-list {
  list-style: none;
  border-top: 1px solid var(--border);
}
.link-list li {
  border-bottom: 1px solid var(--border);
}
.link-list li a {
  display: flex;
  align-items: center;
  padding: 22px 0;
  text-decoration: none;
  color: inherit;
  transition: padding 0.3s;
  gap: 20px;
}
.link-list li a:hover {
  padding-left: 12px;
}
.link-label {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text);
  flex: 0 0 auto;
  transition: color 0.25s;
}
.link-list li a:hover .link-label { color: var(--accent); }

.link-sub {
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  flex: 1;
}
.link-arrow {
  font-size: 0.85rem;
  color: var(--text-dim);
  opacity: 0;
  transform: translateX(-8px);
  transition: all 0.3s;
}
.link-list li a:hover .link-arrow {
  opacity: 1;
  transform: translateX(0);
  color: var(--accent);
}

/* ─── Footer ─── */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 64px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin: 0 auto;
}
.footer-logo-img {
  height: 24px;
  width: auto;
  filter: invert(1) brightness(0.3);
}
.footer-copy {
  font-family: 'DIN Condensed', sans-serif;
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  text-transform: uppercase;
}

/* ─── Animations ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes scrollPulse {
  0%, 100% { transform: scaleY(0.6); opacity: 0.4; transform-origin: top; }
  50%       { transform: scaleY(1);   opacity: 1;   transform-origin: top; }
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .portal-grid { grid-template-columns: 1fr 1fr; }
  header { padding: 0 32px; }
  .hero-content { padding: 0 40px 80px; }
  .hero-instrument-label { right: 40px; }
  .portal-section, .links-section { padding: 80px 40px; }
}
@media (max-width: 700px) {
  .portal-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: clamp(3rem, 13vw, 5rem); }
  .hero { height: 100dvh; }
  header { padding: 0 20px; }
  .header-nav { display: none; }
  .hero-content { padding: 0 24px 80px; }
  .hero-instrument-label { right: 24px; bottom: 48px; }
  .portal-section, .links-section { padding: 64px 24px; }
  footer { padding: 40px 24px; }
  .footer-inner { flex-direction: column; gap: 16px; align-items: flex-start; }
}