/* ============================================================
   VELA BRAND IDENTITY — Design System
   Palette: Monochrome Luxe + Gold
   Typography: PP Neue Montreal + Spectral
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Spectral:ital,wght@0,300;0,400;0,500;1,300;1,400&display=swap');

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  /* Colors */
  --c-bg:         #FAFAFA;
  --c-bg-off:     #F2F2F0;
  --c-bg-dark:    #1A1A1A;
  --c-mid:        #E0E0E0;
  --c-muted:      #8A8A8A;
  --c-ink:        #1A1A1A;
  --c-ink-soft:   #3A3A3A;
  --c-gold:       #B8860B;
  --c-gold-light: #D4A843;
  --c-gold-pale:  #F5EDD6;
  --c-white:      #FFFFFF;

  /* Typography */
  --f-display: 'PP Neue Montreal', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --f-body:    'Spectral', Georgia, 'Times New Roman', serif;
  --f-mono:    'Courier New', Courier, monospace;

  /* Type Scale */
  --t-xs:   0.625rem;   /* 10px */
  --t-sm:   0.75rem;    /* 12px */
  --t-base: 1rem;       /* 16px */
  --t-md:   1.125rem;   /* 18px */
  --t-lg:   1.375rem;   /* 22px */
  --t-xl:   1.75rem;    /* 28px */
  --t-2xl:  2.5rem;     /* 40px */
  --t-3xl:  3.5rem;     /* 56px */
  --t-4xl:  5rem;       /* 80px */
  --t-5xl:  7rem;       /* 112px */

  /* Spacing */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  /* Borders */
  --border-hair:   0.5px solid var(--c-mid);
  --border-thin:   1px solid var(--c-mid);
  --border-ink:    1px solid var(--c-ink);
  --border-gold:   1px solid var(--c-gold);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in:  cubic-bezier(0.7, 0, 0.84, 0);
  --dur-fast: 200ms;
  --dur-med:  400ms;
  --dur-slow: 700ms;
}

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

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

body {
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--f-body);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Typography Utilities ──────────────────────────────────── */
.f-display  { font-family: var(--f-display); }
.f-body     { font-family: var(--f-body); }
.f-mono     { font-family: var(--f-mono); }

.fw-light   { font-weight: 300; }
.fw-regular { font-weight: 400; }
.fw-medium  { font-weight: 500; }

.ls-tight   { letter-spacing: -0.03em; }
.ls-normal  { letter-spacing: 0; }
.ls-wide    { letter-spacing: 0.08em; }
.ls-wider   { letter-spacing: 0.15em; }
.ls-widest  { letter-spacing: 0.25em; }

.uppercase  { text-transform: uppercase; }
.italic     { font-style: italic; }

/* ── Layout ────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--sp-8);
}

.section {
  padding: var(--sp-24) 0;
  border-top: var(--border-hair);
}

/* ── Navigation ────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: var(--border-hair);
  padding: var(--sp-4) var(--sp-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
}

.nav__logo-icon {
  width: 28px;
  height: 28px;
}

.nav__wordmark {
  font-family: var(--f-display);
  font-size: var(--t-base);
  font-weight: 300;
  letter-spacing: 0.25em;
  color: var(--c-ink);
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  gap: var(--sp-8);
  list-style: none;
}

.nav__links a {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-muted);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.nav__links a:hover { color: var(--c-ink); }
.nav__links a.active { color: var(--c-gold); }

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero__left {
  padding: var(--sp-32) var(--sp-8) var(--sp-32) var(--sp-8);
}

.hero__eyebrow {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-6);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.hero__eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 0.5px;
  background: var(--c-gold);
}

.hero__title {
  font-family: var(--f-display);
  font-size: clamp(3rem, 6vw, var(--t-5xl));
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.0;
  color: var(--c-ink);
  margin-bottom: var(--sp-8);
}

.hero__title em {
  font-family: var(--f-body);
  font-style: italic;
  font-weight: 300;
  color: var(--c-gold);
}

.hero__desc {
  font-family: var(--f-body);
  font-size: var(--t-md);
  font-weight: 300;
  line-height: 1.7;
  color: var(--c-ink-soft);
  max-width: 400px;
  margin-bottom: var(--sp-12);
}

.hero__right {
  height: 100vh;
  background: var(--c-bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero__right-inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero__logo-large {
  width: 120px;
  height: 120px;
  opacity: 0.9;
}

.hero__right-label {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-top: var(--sp-6);
}

/* Decorative grid overlay */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(184,134,11,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184,134,11,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--f-display);
  font-size: var(--t-xs);
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  padding: var(--sp-4) var(--sp-8);
  border: none;
  cursor: pointer;
  transition: all var(--dur-med) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--c-ink);
  color: var(--c-white);
}

.btn--primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--c-gold);
  transform: translateX(-101%);
  transition: transform var(--dur-med) var(--ease-out);
}

.btn--primary:hover::after { transform: translateX(0); }
.btn--primary span { position: relative; z-index: 1; }

.btn--outline {
  background: transparent;
  color: var(--c-ink);
  border: var(--border-ink);
}

.btn--outline:hover {
  background: var(--c-ink);
  color: var(--c-white);
}

.btn--ghost {
  background: transparent;
  color: var(--c-gold);
  border: var(--border-gold);
  padding: var(--sp-3) var(--sp-6);
}

.btn--ghost:hover {
  background: var(--c-gold);
  color: var(--c-white);
}

/* ── Section Headers ───────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--sp-12);
  padding-bottom: var(--sp-6);
  border-bottom: var(--border-hair);
}

.section-label {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.section-title {
  font-family: var(--f-display);
  font-size: var(--t-3xl);
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--c-ink);
}

.section-num {
  font-family: var(--f-body);
  font-size: var(--t-sm);
  font-style: italic;
  color: var(--c-muted);
}

/* ── Color Palette ─────────────────────────────────────────── */
.palette-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border: var(--border-thin);
}

.swatch {
  aspect-ratio: 1;
  position: relative;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out);
  overflow: hidden;
}

.swatch:hover { transform: scaleY(1.05); z-index: 2; }

.swatch__info {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: var(--sp-3);
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  transform: translateY(100%);
  transition: transform var(--dur-fast) var(--ease-out);
}

.swatch:hover .swatch__info { transform: translateY(0); }

.swatch__name {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  display: block;
}

.swatch__hex {
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  color: rgba(255,255,255,0.6);
}

/* ── Typography Showcase ───────────────────────────────────── */
.type-specimen {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--sp-8);
  align-items: baseline;
  padding: var(--sp-6) 0;
  border-bottom: var(--border-hair);
}

.type-specimen:last-child { border-bottom: none; }

.type-meta {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.type-meta strong {
  display: block;
  color: var(--c-ink);
  margin-bottom: var(--sp-1);
}

/* ── Logo Variations ───────────────────────────────────────── */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--c-mid);
  border: var(--border-thin);
}

.logo-cell {
  padding: var(--sp-12) var(--sp-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-6);
  background: var(--c-bg);
  transition: background var(--dur-fast) var(--ease-out);
}

.logo-cell:hover { background: var(--c-bg-off); }

.logo-cell--dark {
  background: var(--c-bg-dark);
}

.logo-cell--dark:hover { background: #222; }

.logo-cell--gold {
  background: var(--c-gold);
}

.logo-cell--gold:hover { background: var(--c-gold-light); }

.logo-cell__label {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.logo-cell--dark .logo-cell__label { color: rgba(255,255,255,0.3); }
.logo-cell--gold .logo-cell__label { color: rgba(255,255,255,0.6); }

/* ── Spacing Scale ─────────────────────────────────────────── */
.spacing-row {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  padding: var(--sp-3) 0;
  border-bottom: var(--border-hair);
}

.spacing-bar {
  background: var(--c-ink);
  height: 2px;
  flex-shrink: 0;
}

.spacing-label {
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  color: var(--c-muted);
  white-space: nowrap;
}

/* ── Usage Examples ────────────────────────────────────────── */
.card {
  background: var(--c-white);
  border: var(--border-thin);
  padding: var(--sp-8);
  position: relative;
  transition: box-shadow var(--dur-med) var(--ease-out);
}

.card:hover {
  box-shadow: 4px 4px 0 var(--c-gold);
}

.card__tag {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-4);
}

.card__title {
  font-family: var(--f-display);
  font-size: var(--t-xl);
  font-weight: 300;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-4);
}

.card__body {
  font-family: var(--f-body);
  font-size: var(--t-base);
  font-weight: 300;
  color: var(--c-ink-soft);
  line-height: 1.7;
}

.card__rule {
  width: 32px;
  height: 1px;
  background: var(--c-gold);
  margin: var(--sp-6) 0;
}

/* ── Dividers ──────────────────────────────────────────────── */
.divider {
  width: 100%;
  height: 0.5px;
  background: var(--c-mid);
  margin: var(--sp-16) 0;
}

.divider--gold {
  background: var(--c-gold);
  height: 1px;
  width: 64px;
}

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  background: var(--c-bg-dark);
  color: rgba(255,255,255,0.4);
  padding: var(--sp-12) var(--sp-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: var(--border-hair);
}

.footer__brand {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
}

.footer__copy {
  font-family: var(--f-body);
  font-size: var(--t-xs);
  font-style: italic;
}

/* ── Animations ────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes drawLine {
  from { stroke-dashoffset: 200; }
  to   { stroke-dashoffset: 0; }
}

@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.animate-fade-up {
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease-out) forwards;
}

.animate-fade-up.delay-1 { animation-delay: 100ms; }
.animate-fade-up.delay-2 { animation-delay: 250ms; }
.animate-fade-up.delay-3 { animation-delay: 400ms; }
.animate-fade-up.delay-4 { animation-delay: 550ms; }

/* ── Scroll Reveal ─────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Tooltip ───────────────────────────────────────────────── */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-ink);
  color: var(--c-white);
  font-family: var(--f-display);
  font-size: var(--t-xs);
  letter-spacing: 0.1em;
  padding: var(--sp-2) var(--sp-3);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.tooltip:hover::after { opacity: 1; }

/* ── Social Templates ──────────────────────────────────────── */
.social-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--sp-8);
}

.social-frame {
  position: relative;
  overflow: hidden;
  background: var(--c-bg-dark);
}

.social-frame--square { aspect-ratio: 1; }
.social-frame--story  { aspect-ratio: 9/16; max-height: 600px; }
.social-frame--banner { aspect-ratio: 1200/628; }

.social-label {
  font-family: var(--f-display);
  font-size: var(--t-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.social-label::before {
  content: '';
  display: block;
  width: 16px;
  height: 0.5px;
  background: var(--c-gold);
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero__right { display: none; }
  .palette-grid { grid-template-columns: repeat(3, 1fr); }
  .logo-grid { grid-template-columns: 1fr; }
  .type-specimen { grid-template-columns: 1fr; }
  .section-title { font-size: var(--t-2xl); }
}

@media (max-width: 600px) {
  .container { padding: 0 var(--sp-4); }
  .palette-grid { grid-template-columns: repeat(2, 1fr); }
  .social-grid { grid-template-columns: 1fr; }
}