/* ============================================================
   DREN.GROUP — Design System
   Award-winning dark infrastructure aesthetic
   ============================================================ */

:root {
  /* Color System */
  --black: #080808;
  --surface-0: #0d0d0d;
  --surface-1: #111111;
  --surface-2: #181818;
  --surface-3: #222222;
  --border: rgba(255,255,255,0.07);
  --border-hover: rgba(255,255,255,0.15);

  /* Brand Colors */
  --gold: #c9a84c;
  --gold-light: #e8c97a;
  --gold-dim: rgba(201,168,76,0.15);
  --teal: #2dd4bf;
  --teal-dim: rgba(45,212,191,0.12);
  --amber: #f59e0b;
  --rust: #c2410c;
  --sage: #4d7c5f;

  /* Text */
  --text-primary: #f0ede8;
  --text-secondary: #9a9590;
  --text-tertiary: #5a5550;
  --text-gold: #c9a84c;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  --space-2xl: 12rem;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 200ms;
  --duration-base: 400ms;
  --duration-slow: 800ms;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--black);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: var(--gold-dim); color: var(--gold-light); }

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

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
.display-1 {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 8vw, 7rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.display-2 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.display-3 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 600;
  line-height: 1.2;
}

.heading-1 { font-size: clamp(1.4rem, 2.5vw, 2rem); font-weight: 600; line-height: 1.3; }
.heading-2 { font-size: 1.25rem; font-weight: 600; line-height: 1.4; }
.body-lg { font-size: 1.125rem; line-height: 1.7; color: var(--text-secondary); }
.body-md { font-size: 1rem; line-height: 1.7; color: var(--text-secondary); }
.caption { font-size: 0.8125rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-tertiary); }
.label { font-size: 0.875rem; font-weight: 500; }
.mono { font-family: var(--font-mono); font-size: 0.875rem; }

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--wide { max-width: 1400px; }
.container--narrow { max-width: 760px; }

.section { padding: var(--space-xl) 0; }
.section--lg { padding: var(--space-2xl) 0; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-md); }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--duration-base) var(--ease-out),
              border-color var(--duration-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(8,8,8,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.nav__logo-mark {
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--gold);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width var(--duration-base) var(--ease-out);
}

.nav__link:hover { color: var(--text-primary); }
.nav__link:hover::after { width: 100%; }

.nav__cta {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--gold);
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gold);
  transition: background var(--duration-fast), color var(--duration-fast);
}
.nav__cta:hover { background: var(--gold); color: var(--black); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  transition: transform var(--duration-base) var(--ease-out), opacity var(--duration-fast);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero__canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 40%, rgba(201,168,76,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 20% 80%, rgba(45,212,191,0.04) 0%, transparent 60%),
    linear-gradient(180deg, transparent 60%, var(--black) 100%);
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding: var(--space-xl) 0;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-md);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp var(--duration-slow) var(--ease-out) 0.2s forwards;
}

.hero__eyebrow-line {
  width: 40px;
  height: 1px;
  background: var(--gold);
}

.hero__headline {
  margin-bottom: var(--space-md);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp var(--duration-slow) var(--ease-out) 0.4s forwards;
}

.hero__headline em {
  font-style: italic;
  color: var(--gold);
}

.hero__subhead {
  max-width: 560px;
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp var(--duration-slow) var(--ease-out) 0.6s forwards;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp var(--duration-slow) var(--ease-out) 0.8s forwards;
}

.hero__stats {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
  opacity: 0;
  animation: fadeUp var(--duration-slow) var(--ease-out) 1s forwards;
}

.hero__stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-top: 0.375rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: 4px;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gold);
  color: var(--black);
}
.btn--primary:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(201,168,76,0.25);
}

.btn--ghost {
  border: 1px solid var(--border-hover);
  color: var(--text-secondary);
}
.btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-1px);
}

.btn--sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ============================================================
   SECTION LABELS
   ============================================================ */
.section-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-md);
}

.section-label__line {
  width: 32px;
  height: 1px;
  background: var(--gold);
}

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee {
  overflow: hidden;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface-1);
}

.marquee__track {
  display: flex;
  gap: 3rem;
  animation: marquee 30s linear infinite;
  width: max-content;
}

.marquee__item {
  display: flex;
  align-items: center;
  gap: 1rem;
  white-space: nowrap;
  font-size: 0.875rem;
  color: var(--text-tertiary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.marquee__dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}

/* ============================================================
   PROBLEM SECTION
   ============================================================ */
.problem {
  background: var(--surface-0);
  position: relative;
}

.problem__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.problem__visual {
  position: relative;
  height: 500px;
}

.problem__diagram {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.diagram-node {
  position: absolute;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.875rem 1.25rem;
  background: var(--surface-2);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: border-color var(--duration-base), color var(--duration-base);
  white-space: nowrap;
}

.diagram-node.active {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--gold-dim);
}

.diagram-node.dim { opacity: 0.4; }

.problem__points { display: flex; flex-direction: column; gap: var(--space-md); }

.problem__point {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
  transition: border-color var(--duration-base);
}

.problem__point:hover { border-color: var(--border-hover); }

.problem__point-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--gold-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--gold);
  font-size: 1.2rem;
}

/* ============================================================
   SOLUTION SECTION
   ============================================================ */
.solution {
  position: relative;
  overflow: hidden;
}

.solution::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(201,168,76,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.solution__paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.solution__path {
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-1);
  transition: border-color var(--duration-base), transform var(--duration-base) var(--ease-out);
  cursor: default;
}

.solution__path:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
}

.solution__path-badge {
  display: inline-flex;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.solution__path-badge--custom {
  background: var(--gold-dim);
  color: var(--gold);
  border: 1px solid rgba(201,168,76,0.3);
}

.solution__path-badge--tadr {
  background: var(--teal-dim);
  color: var(--teal);
  border: 1px solid rgba(45,212,191,0.3);
}

.solution__path-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.solution__path-features {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: var(--space-sm);
}

.solution__path-feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.solution__path-feature::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}

/* ============================================================
   WORK / CASE STUDIES
   ============================================================ */
.work { background: var(--surface-0); }

.work__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
  border: 1.5px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  margin-top: var(--space-lg);
}

.case-card {
  background: var(--surface-1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background var(--duration-base);
}

.case-card:hover { background: var(--surface-2); }

.case-card__header {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  min-height: 280px;
  position: relative;
}

.case-card__category {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.case-card__name {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  margin-top: auto;
  line-height: 1.1;
}

.case-card__tagline {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.case-card__accent {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-out);
}

.case-card:hover .case-card__accent,
.case-card.expanded .case-card__accent { transform: scaleX(1); }

.case-card--ceba .case-card__accent { background: var(--teal); }
.case-card--bb .case-card__accent { background: var(--gold); }
.case-card--zona .case-card__accent { background: var(--sage); }

.case-card__expand-icon {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  transition: all var(--duration-base) var(--ease-out);
}

.case-card:hover .case-card__expand-icon {
  border-color: var(--gold);
  color: var(--gold);
}

.case-card.expanded .case-card__expand-icon {
  transform: rotate(45deg);
  border-color: var(--gold);
  color: var(--gold);
  background: var(--gold-dim);
}

.case-card__body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.6s var(--ease-out), padding 0.4s var(--ease-out);
  padding: 0 var(--space-md);
  border-top: 1px solid transparent;
}

.case-card.expanded .case-card__body {
  max-height: 600px;
  padding: var(--space-md);
  border-top-color: var(--border);
}

.case-card__story { margin-bottom: var(--space-sm); }
.case-card__story h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.case-card__capability {
  margin-top: var(--space-sm);
  padding: var(--space-sm);
  background: var(--gold-dim);
  border: 1px solid rgba(201,168,76,0.2);
  border-radius: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-style: italic;
}

/* ============================================================
   ECOSYSTEM CTA
   ============================================================ */
.ecosystem {
  background: var(--surface-0);
  position: relative;
  overflow: hidden;
}

.ecosystem::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(201,168,76,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.ecosystem__inner {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.ecosystem__brands {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
  flex-wrap: wrap;
}

.ecosystem__brand {
  padding: 0.625rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: all var(--duration-base);
}

.ecosystem__brand:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--gold-dim);
}

/* ============================================================
   QUESTIONNAIRE
   ============================================================ */
.questionnaire {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--black);
  position: relative;
  overflow: hidden;
}

.questionnaire::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.questionnaire__container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.questionnaire__progress {
  display: flex;
  gap: 6px;
  margin-bottom: var(--space-lg);
}

.questionnaire__progress-step {
  height: 2px;
  flex: 1;
  background: var(--surface-3);
  border-radius: 2px;
  overflow: hidden;
}

.questionnaire__progress-fill {
  height: 100%;
  background: var(--gold);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease-out);
}

.questionnaire__progress-step.done .questionnaire__progress-fill { transform: scaleX(1); }
.questionnaire__progress-step.active .questionnaire__progress-fill { transform: scaleX(0.5); animation: pulse-progress 1.5s ease-in-out infinite alternate; }

.q-step {
  display: none;
  animation: fadeUp var(--duration-base) var(--ease-out) forwards;
}
.q-step.active { display: block; }

.q-step__number {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.q-step__question {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.q-options { display: flex; flex-direction: column; gap: 0.75rem; }

.q-option {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.125rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-1);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  text-align: left;
}

.q-option:hover {
  border-color: var(--gold);
  background: var(--gold-dim);
  transform: translateX(4px);
}

.q-option.selected {
  border-color: var(--gold);
  background: var(--gold-dim);
}

.q-option__key {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border-hover);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: all var(--duration-fast);
}

.q-option:hover .q-option__key,
.q-option.selected .q-option__key {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--gold-dim);
}

.q-text-input {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.125rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-primary);
  resize: none;
  min-height: 120px;
  transition: border-color var(--duration-fast);
  outline: none;
}

.q-text-input:focus { border-color: var(--gold); }
.q-text-input::placeholder { color: var(--text-tertiary); }

.q-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-md);
}

.q-result {
  display: none;
  padding: var(--space-md);
  border: 1px solid rgba(201,168,76,0.3);
  border-radius: 12px;
  background: var(--gold-dim);
}

.q-result.visible {
  display: block;
  animation: fadeUp var(--duration-base) var(--ease-out) forwards;
}

.q-result__heading {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-timeline {
  position: relative;
  padding-left: 2px;
}

.about-timeline__line {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), transparent);
}

.timeline-item {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0 var(--space-md) var(--space-md);
  border-left: 1px solid var(--border);
  margin-left: 1px;
  position: relative;
  transition: border-color var(--duration-base);
}

.timeline-item:hover { border-left-color: var(--gold); }

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: var(--space-md);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1.5px solid var(--gold);
  background: var(--black);
}

.timeline-item__year {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--gold);
  padding-top: 0.25rem;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.value-card {
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-1);
  transition: border-color var(--duration-base), transform var(--duration-base) var(--ease-out);
}

.value-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.value-card__icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
  padding-top: calc(var(--nav-height) + var(--space-xl));
}

.contact-info__methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color var(--duration-base);
}

.contact-method:hover { border-color: var(--gold); }

.contact-method__icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--gold-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  flex-shrink: 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--surface-0);
  border-top: 1px solid var(--border);
  padding: var(--space-lg) 0 var(--space-md);
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-md);
}

.footer__brand-desc {
  font-size: 0.9rem;
  color: var(--text-tertiary);
  margin-top: 0.75rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer__col-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  margin-bottom: 1rem;
}

.footer__links { display: flex; flex-direction: column; gap: 0.625rem; }

.footer__link {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}
.footer__link:hover { color: var(--text-primary); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__legal { font-size: 0.8125rem; color: var(--text-tertiary); }

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

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes pulse-progress {
  from { transform: scaleX(0.5); }
  to { transform: scaleX(0.8); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Scroll-triggered reveal */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .grid-3, .work__grid { grid-template-columns: 1fr 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --space-xl: 5rem; --space-2xl: 8rem; }

  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: flex; }

  .nav.menu-open .nav__links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(8,8,8,0.97);
    backdrop-filter: blur(20px);
    padding: var(--space-md);
    border-bottom: 1px solid var(--border);
    gap: var(--space-sm);
  }

  .grid-2, .problem__grid, .solution__paths,
  .contact-split, .values-grid { grid-template-columns: 1fr; }

  .work__grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
  .hero__stats { gap: var(--space-md); }
  .hero__stat-number { font-size: 2rem; }
}

@media (max-width: 480px) {
  .footer__top { grid-template-columns: 1fr; }
  .hero__stats { flex-wrap: wrap; }
  .ecosystem__brands { gap: var(--space-sm); }
}