/* ── SHIFT DRINK SOCIETY — BRAND CSS ─────────────────────────────────────── */

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

:root {
  --black:    #0a0a0a;
  --dark:     #111111;
  --steel:    #1a1a1a;
  --surface:  #222222;
  --metal:    #8a8a8a;
  --silver:   #b0b0b0;
  --white:    #e8e8e8;
  --bright:   #f5f5f5;
  --accent:   #c0c0c0;
  --amber:    #c8922a;
  --amber-dim: #8a6018;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Space Grotesk', sans-serif;
  --font-mono:    'DM Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background-color: var(--black);
  color: var(--silver);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Noise texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
}

/* ── NAV ─────────────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  background: linear-gradient(to bottom, rgba(10,10,10,0.95) 0%, transparent 100%);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--silver);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--metal);
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active { color: var(--white); }

/* ── ENTRY CORRIDOR / HERO ────────────────────────────────────────────────── */
.corridor {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  padding: 0 24px;
  text-align: center;
}

.corridor::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--metal));
}

.corridor-mark {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.4em;
  color: var(--metal);
  margin-bottom: 40px;
}

.corridor-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--white);
  line-height: 1.05;
  margin-bottom: 24px;
}

.corridor-sub {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--metal);
  max-width: 480px;
  margin: 0 auto 48px;
}

.corridor-divider {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--metal), transparent);
  margin: 0 auto 48px;
}

.corridor-cta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--black);
  background: var(--silver);
  padding: 14px 40px;
  text-decoration: none;
  transition: background 0.3s ease, color 0.3s ease;
}

.corridor-cta:hover {
  background: var(--white);
  color: var(--black);
}

/* ── SECTION BASE ────────────────────────────────────────────────────────── */
.section {
  padding: 100px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 20px;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 16px;
  color: var(--metal);
  max-width: 560px;
  line-height: 1.7;
}

/* ── CORE SIX SECTION ────────────────────────────────────────────────────── */
.core-six {
  padding: 80px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.core-six-header {
  text-align: center;
  margin-bottom: 72px;
}

.cocktail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.cocktail-card {
  background: var(--steel);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.cocktail-card-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
  filter: grayscale(40%) brightness(0.85);
  transition: filter 0.5s ease, transform 0.5s ease;
}

.cocktail-card:hover .cocktail-card-img {
  filter: grayscale(0%) brightness(0.95);
  transform: scale(1.03);
}

.cocktail-card-body {
  padding: 28px 32px;
  background: var(--steel);
}

.cocktail-card-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}

.cocktail-card-category {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 14px;
}

.cocktail-card-desc {
  font-size: 14px;
  color: var(--metal);
  line-height: 1.65;
}

.cocktail-card-number {
  position: absolute;
  top: 20px;
  right: 24px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(192, 192, 192, 0.3);
  letter-spacing: 0.1em;
}

/* ── CONCEPT SECTION ─────────────────────────────────────────────────────── */
.concept-section {
  padding: 80px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.concept-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  margin-bottom: 80px;
  align-items: start;
}

.concept-intro-text h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 24px;
  line-height: 1.1;
}

.concept-intro-text p {
  font-size: 15px;
  color: var(--metal);
  line-height: 1.8;
  margin-bottom: 16px;
}

.concept-visual {
  position: relative;
}

.concept-visual-img {
  width: 100%;
  border-radius: 2px;
  filter: brightness(0.85) grayscale(20%);
}

.concept-visual-caption {
  position: absolute;
  bottom: -24px;
  left: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--metal);
  letter-spacing: 0.15em;
}

/* System blocks */
.system-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.system-card {
  background: var(--steel);
  padding: 40px 36px;
}

.system-card-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 24px;
  opacity: 0.7;
}

.system-card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.system-card-body {
  font-size: 14px;
  color: var(--metal);
  line-height: 1.7;
}

/* Emotional arc */
.arc-header {
  text-align: center;
  margin-bottom: 60px;
}

.arc-track {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0 60px;
}

.arc-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  text-align: center;
}

.arc-step-number {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--amber);
  margin-bottom: 12px;
}

.arc-step-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.arc-step-desc {
  font-size: 13px;
  color: var(--metal);
  max-width: 160px;
  line-height: 1.6;
}

.arc-line {
  position: absolute;
  top: 28px;
  left: 80px;
  right: 80px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--metal), transparent);
}

/* ── FOOTER ───────────────────────────────────────────────────────────────── */
.footer {
  padding: 60px 40px;
  border-top: 1px solid var(--steel);
  text-align: center;
}

.footer-mark {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--metal);
  margin-bottom: 16px;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(138, 138, 138, 0.4);
  letter-spacing: 0.1em;
}

/* ── UTILITIES ────────────────────────────────────────────────────────────── */
.divider {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, transparent, var(--metal));
  margin: 0 auto;
}

/* ── RESPONSIVE ──────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav { padding: 16px 24px; }
  .nav-links { gap: 20px; }
  .section { padding: 60px 24px; }
  .core-six { padding: 60px 24px; }
  .concept-section { padding: 60px 24px; }
  .cocktail-grid { grid-template-columns: repeat(2, 1fr); }
  .concept-intro { grid-template-columns: 1fr; gap: 40px; }
  .system-grid { grid-template-columns: 1fr; }
  .arc-track { flex-direction: column; gap: 32px; align-items: center; }
  .arc-line { display: none; }
}

@media (max-width: 600px) {
  .nav-links { display: none; }
  .cocktail-grid { grid-template-columns: 1fr; }
}