/* ============================================
   SuttonVS.com — Design System & Styles
   Sutton Venture Studio · 2026
   ============================================ */

/* --- Design Tokens --- */
:root {
  --black: #0a0a0a;
  --off-white: #f5f2ee;
  --warm-white: #faf8f5;
  --gold: #c8a96e;
  --gold-light: #e8d5a8;
  --gold-dark: #9a7c45;
  --muted: #6b6560;
  --border: #e2ddd8;
  --border-dark: #2a2825;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 80px;
  --space-2xl: 120px;

  --max-width: 1100px;
  --nav-height: 64px;

  --font-heading: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, Helvetica, Arial, sans-serif;
}

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

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { background: none; border: none; cursor: pointer; font: inherit; color: inherit; }

/* --- Base --- */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--black);
  background: var(--off-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.1;
}

h1 { font-size: 40px; }
h2 { font-size: 32px; }
h3 { font-size: 24px; }
h4 { font-size: 20px; }

.eyebrow {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-md);
}

.subhead {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 300;
  color: var(--muted);
  max-width: 520px;
  line-height: 1.6;
}

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-xl) 0;
}

.section-dark {
  background: var(--black);
  color: var(--off-white);
}

/* --- Navigation --- */
nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

nav.nav-scrolled {
  background: var(--black);
  box-shadow: 0 1px 0 var(--border-dark);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 20px;
  color: var(--black);
  transition: color 0.3s ease;
}

nav.nav-scrolled .nav-logo {
  color: var(--gold);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--black);
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--gold);
}

.nav-links a.active {
  color: var(--gold);
}

nav.nav-scrolled .nav-links a {
  color: var(--off-white);
}

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

/* --- Hamburger --- */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: var(--nav-height);
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--black);
  transition: background 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
}

nav.nav-scrolled .hamburger span {
  background: var(--off-white);
}

/* Hamburger open state */
body.menu-open .hamburger span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--off-white);
}

body.menu-open .hamburger span:nth-child(2) {
  opacity: 0;
}

body.menu-open .hamburger span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--off-white);
}

/* --- Mobile Overlay --- */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: var(--black);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

body.menu-open .mobile-overlay {
  opacity: 1;
  pointer-events: auto;
}

.mobile-overlay a {
  font-family: var(--font-heading);
  font-size: 36px;
  color: var(--off-white);
  transition: color 0.2s ease;
}

.mobile-overlay a:hover {
  color: var(--gold);
}

/* --- Buttons --- */
.btn-primary {
  display: inline-block;
  background: var(--gold);
  color: var(--black);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 28px;
  border: none;
  cursor: pointer;
  transition: background 0.2s ease;
}

.btn-primary:hover {
  background: var(--gold-dark);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--black);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 28px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
}

.btn-secondary:hover {
  background: var(--black);
  color: var(--off-white);
}

/* Light button variants for dark sections */
.section-dark .btn-primary {
  background: var(--gold);
  color: var(--black);
}

.section-dark .btn-secondary {
  color: var(--off-white);
  border-color: var(--border-dark);
}

.section-dark .btn-secondary:hover {
  background: var(--off-white);
  color: var(--black);
}

/* --- Hero --- */
.hero {
  padding-top: calc(var(--nav-height) + var(--space-xl));
  padding-bottom: var(--space-xl);
}

.hero h1 {
  margin-bottom: var(--space-md);
}

.hero .subhead {
  margin-bottom: var(--space-lg);
}

.hero-ctas {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ============================================
   HOME PAGE
   ============================================ */

/* --- Studio Model (3-column) --- */
.studio-model {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.studio-model-item {
  padding: var(--space-md) 0;
}

.studio-model-number {
  font-family: var(--font-heading);
  font-size: 48px;
  color: var(--gold);
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.studio-model-item h3 {
  margin-bottom: var(--space-xs);
}

.studio-model-item p {
  font-size: 15px;
  color: var(--muted);
  font-weight: 300;
  line-height: 1.7;
}

/* --- Portfolio Snapshot (home, 3 featured) --- */
.portfolio-snapshot-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.portfolio-snapshot .eyebrow {
  margin-bottom: var(--space-sm);
}

.portfolio-link {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
}

.portfolio-link:hover {
  color: var(--gold-dark);
}

/* --- Consulting Pull-Quote --- */
.consulting-quote {
  padding: var(--space-xl) 0;
}

.consulting-quote blockquote {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--off-white);
  border-left: 4px solid var(--gold);
  padding-left: var(--space-md);
  max-width: 720px;
  margin-bottom: var(--space-lg);
}

/* --- Location Bar --- */
.location-bar {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: var(--space-md) 0;
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.location-bar span {
  display: inline;
}

.location-bar .separator {
  margin: 0 var(--space-sm);
}

/* ============================================
   VENTURES PAGE
   ============================================ */

/* --- Venture Grid --- */
.venture-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

/* --- Venture Card --- */
.venture-card {
  background: var(--warm-white);
  border-left: 3px solid var(--border);
  padding: var(--space-md);
  transition: box-shadow 0.2s ease;
}

a.venture-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

.venture-card:hover {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.venture-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.venture-name {
  font-family: var(--font-heading);
  font-size: 22px;
  transition: font-style 0.2s ease;
}

.venture-card:hover .venture-name {
  font-style: italic;
}

.venture-domain {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-xs);
}

.venture-desc {
  font-size: 14px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.6;
}

/* --- Status Badges --- */
.badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 100px;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-live {
  background: rgba(200, 169, 110, 0.15);
  color: var(--gold-dark);
  border: 1px solid rgba(200, 169, 110, 0.3);
}

.badge-nearly {
  background: rgba(200, 169, 110, 0.08);
  color: var(--muted);
  border: 1px solid transparent;
}

.badge-building {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}

.badge-deck {
  background: rgba(200, 169, 110, 0.15);
  color: var(--gold-dark);
  border: 1px solid rgba(200, 169, 110, 0.3);
}

/* --- Venture Card Border Colors --- */
.border-live { border-left-color: var(--gold); }
.border-nearly { border-left-color: var(--gold-dark); }
.border-building { border-left-color: var(--muted); }
.border-deck { border-left-color: var(--border-dark); }

/* --- Revanta Client Section --- */
.revanta-section {
  border-top: 1px solid var(--border);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
}

.revanta-section h3 {
  margin-bottom: var(--space-md);
}

.revanta-card {
  background: var(--warm-white);
  border-left: 3px solid var(--gold);
  padding: var(--space-md);
}

.revanta-card h4 {
  margin-bottom: var(--space-xs);
}

.revanta-card p {
  font-size: 14px;
  font-weight: 300;
  color: var(--muted);
  margin-bottom: var(--space-sm);
}

.revanta-card a {
  font-size: 13px;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.revanta-card a:hover {
  color: var(--gold-dark);
}

/* ============================================
   CONSULTING PAGE
   ============================================ */

/* --- Consulting Layout --- */
.consulting-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.consulting-text p {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

/* --- Stats Card --- */
.stats-card {
  background: var(--black);
  padding: var(--space-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.stat-item {
  padding: var(--space-sm) 0;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 28px;
  color: var(--gold);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* --- Tier List --- */
.tier-list {
  margin-top: var(--space-lg);
}

.tier-list-header {
  margin-bottom: var(--space-md);
}

.tier-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
}

.tier-name {
  font-family: var(--font-heading);
  font-size: 18px;
}

.tier-label {
  font-size: 13px;
  color: var(--muted);
  margin-left: var(--space-xs);
  font-weight: 300;
}

.tier-price {
  font-size: 14px;
  font-weight: 500;
  color: var(--gold-dark);
  white-space: nowrap;
}

/* --- CTA Block --- */
.cta-block {
  text-align: center;
  padding: var(--space-xl) 0;
}

.cta-block h2 {
  margin-bottom: var(--space-sm);
}

.cta-block .subhead {
  margin: 0 auto var(--space-lg);
  text-align: center;
}

.cta-block .hero-ctas {
  justify-content: center;
}

/* --- Client Spotlight --- */
.client-spotlight {
  border-top: 1px solid var(--border);
  padding-top: var(--space-xl);
}

.ai-integration-card {
  border-left: 3px solid var(--gold);
  padding: var(--space-lg) var(--space-md);
  max-width: 760px;
}

.ai-integration-card h2 {
  margin-bottom: var(--space-md);
}

.ai-integration-card p {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  max-width: 600px;
}

.ai-integration-card .btn-primary {
  margin-top: var(--space-xs);
}

.client-spotlight h3 {
  margin-bottom: var(--space-md);
}

.client-spotlight p {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.7;
  max-width: 600px;
}

/* ============================================
   ABOUT PAGE
   ============================================ */

/* --- Founder Section --- */
.founder-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.founder-info h3 {
  font-size: 28px;
  margin-bottom: var(--space-xs);
}

.founder-title {
  font-size: 14px;
  color: var(--gold);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-md);
}

.founder-bio p {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

/* --- Philosophy Grid --- */
.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.philosophy-item h4 {
  margin-bottom: var(--space-xs);
  color: var(--black);
}

.philosophy-item p {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.7;
}

/* --- Timeline --- */
.timeline-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  -ms-overflow-style: none;
  scrollbar-width: none;
  position: relative;
}

.timeline-wrapper::-webkit-scrollbar {
  display: none;
}

.timeline {
  display: flex;
  gap: var(--space-md);
  padding-bottom: var(--space-sm);
  min-width: max-content;
}

.timeline-item {
  flex: 0 0 auto;
  min-width: 200px;
  padding: var(--space-sm);
  border-left: 2px solid var(--gold);
}

.timeline-year {
  font-family: var(--font-heading);
  font-size: 20px;
  color: var(--gold);
  margin-bottom: 4px;
}

.timeline-event {
  font-size: 14px;
  font-weight: 300;
  color: var(--muted);
}

/* Timeline fade hint */
.timeline-container {
  position: relative;
}

.timeline-container::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 60px;
  background: linear-gradient(to right, transparent, var(--off-white));
  pointer-events: none;
}

/* ============================================
   CONTACT PAGE
   ============================================ */

/* --- Form --- */
.form-grid {
  max-width: 640px;
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-xs);
  color: var(--black);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  background: var(--warm-white);
  color: var(--black);
  outline: none;
  transition: border-color 0.2s ease;
}

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

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236b6560' d='M1.41 0L6 4.58 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group .optional {
  font-weight: 300;
  color: var(--muted);
  font-size: 12px;
  margin-left: 4px;
}

/* --- Form Validation --- */
.form-group .error-msg {
  display: none;
  font-size: 12px;
  color: var(--gold-dark);
  margin-top: 4px;
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-color: var(--gold-dark);
}

.form-group.has-error .error-msg {
  display: block;
}

/* --- Submit Button --- */
.form-submit {
  margin-top: var(--space-md);
}

.form-submit .btn-primary {
  width: 100%;
  padding: 16px;
  font-size: 14px;
}

.form-submit .btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* --- Form Success State --- */
.form-success {
  display: none;
  background: var(--black);
  padding: var(--space-lg);
  text-align: center;
}

.form-success-icon {
  color: var(--gold);
  margin-bottom: var(--space-md);
}

.form-success h3 {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 24px;
  color: var(--off-white);
  margin-bottom: var(--space-sm);
}

.form-success p {
  font-size: 14px;
  color: var(--muted);
}

/* --- Form Error State --- */
.form-error {
  display: none;
  background: rgba(200, 169, 110, 0.08);
  border: 1px solid var(--gold-dark);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  font-size: 14px;
  color: var(--gold-dark);
}

/* --- Contact Strip --- */
.contact-strip {
  border-top: 1px solid var(--border);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

.contact-strip a {
  color: var(--gold);
  transition: color 0.2s ease;
}

.contact-strip a:hover {
  color: var(--gold-dark);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  background: var(--black);
  padding: var(--space-lg) 0;
  margin-top: var(--space-xl);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--gold);
}

.footer-inner span {
  font-size: 13px;
  color: var(--muted);
}

/* ============================================
   RESPONSIVE — Desktop (768px+)
   ============================================ */
@media (min-width: 768px) {
  /* Typography */
  h1 { font-size: 72px; }
  h2 { font-size: 44px; }

  /* Nav */
  .nav-links {
    display: flex;
  }

  .hamburger {
    display: none;
  }

  /* Studio Model */
  .studio-model {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Portfolio Snapshot */
  .portfolio-snapshot-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Venture Grid */
  .venture-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Consulting Layout */
  .consulting-layout {
    grid-template-columns: 3fr 2fr;
    align-items: start;
  }

  /* Stats Card */
  .stat-number {
    font-size: 32px;
  }

  /* Founder Section */
  .founder-section {
    grid-template-columns: 55fr 45fr;
  }

  /* Philosophy Grid */
  .philosophy-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Timeline — no fade needed on desktop */
  .timeline-container::after {
    display: none;
  }

  /* Footer */
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }

  /* Form submit */
  .form-submit .btn-primary {
    width: auto;
  }
}