/* ============================================
   Twig LLC - Design System
   ============================================ */

:root {
  /* Colors - Sophisticated, earthy palette */
  --color-bg: #0F1410;
  --color-bg-soft: #161C18;
  --color-surface: #1F2620;
  --color-text: #F5F1E8;
  --color-text-muted: #A8A89C;
  --color-text-dim: #6B6B5F;
  --color-accent: #C9A961;        /* Brass gold */
  --color-accent-soft: #8B7849;
  --color-leaf: #5A7560;          /* Twig green */
  --color-line: rgba(245, 241, 232, 0.08);
  --color-line-strong: rgba(245, 241, 232, 0.16);
  
  /* Typography */
  --font-display: 'Fraunces', 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 9rem;
  
  /* Layout */
  --container: 1400px;
  --container-narrow: 1100px;
  --header-h: 84px;
  
  /* Transitions */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 200ms;
  --t-med: 400ms;
  --t-slow: 700ms;
}

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

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

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
  position: relative;
}

/* Subtle noise texture for depth */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.4'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: overlay;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Typography */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variation-settings: "opsz" 144, "SOFT" 100;
}

h1 { font-size: clamp(2.5rem, 7vw, 6.5rem); }
h2 { font-size: clamp(2rem, 4.5vw, 4rem); }
h3 { font-size: clamp(1.5rem, 2.5vw, 2.25rem); }
h4 { font-size: clamp(1.15rem, 1.5vw, 1.4rem); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  font-weight: 500;
}

.lede {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(1.15rem, 1.6vw, 1.5rem);
  line-height: 1.5;
  color: var(--color-text-muted);
}

/* Layout */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  position: relative;
  z-index: 2;
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

section {
  padding: var(--space-3xl) 0;
  position: relative;
  z-index: 2;
}

/* ============================================
   Header / Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: rgba(15, 20, 16, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-line);
  transition: all var(--t-med) var(--ease);
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.logo {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
  max-width: 140px;
}

.logo-img {
  height: 26px;
  width: auto;
  max-width: 100%;
  display: block;
  object-fit: contain;
  transition: opacity var(--t-fast) var(--ease);
}

.footer .logo {
  max-width: 180px;
  margin-bottom: var(--space-md);
}

.footer .logo-img {
  height: 32px;
}

.logo:hover .logo-img {
  opacity: 0.8;
}

.logo-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

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

.nav a {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-muted);
  transition: color var(--t-fast) var(--ease);
  position: relative;
}

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

.nav a.active::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--t-med) var(--ease);
  background: transparent;
  color: var(--color-text);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-text);
  transform: translateY(-2px);
}

.btn-ghost {
  border-color: var(--color-line-strong);
  color: var(--color-text);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-arrow {
  transition: transform var(--t-fast) var(--ease);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: 0.5rem;
}

/* ============================================
   Hero
   ============================================ */
.hero {
  min-height: 100vh;
  padding: calc(var(--header-h) + var(--space-2xl)) 0 var(--space-2xl);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: 
    radial-gradient(ellipse at 70% 30%, rgba(201, 169, 97, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(90, 117, 96, 0.18) 0%, transparent 55%),
    var(--color-bg);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(var(--color-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.4;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.hero-meta-line {
  flex: 1;
  height: 1px;
  background: var(--color-line-strong);
  max-width: 200px;
}

.hero h1 {
  max-width: 1100px;
  margin-bottom: var(--space-lg);
}

.hero h1 .accent {
  font-style: italic;
  font-weight: 300;
  color: var(--color-accent);
}

.hero-sub {
  max-width: 620px;
  margin-bottom: var(--space-xl);
}

.hero-cta {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-line);
}

.stat-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3.25rem);
  line-height: 1;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: baseline;
  gap: 0.15em;
}

.stat-num small {
  font-size: 0.5em;
  color: var(--color-accent);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-dim);
}

.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  z-index: 3;
}

.scroll-cue::after {
  content: "";
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollPulse 2.4s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.4); opacity: 0.4; }
}

/* ============================================
   Section Headers
   ============================================ */
.section-head {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  align-items: end;
}

.section-head-meta .eyebrow {
  display: block;
  margin-bottom: var(--space-md);
}

.section-head h2 {
  max-width: 700px;
}

.section-head h2 em {
  font-style: italic;
  font-weight: 300;
  color: var(--color-accent);
}

/* ============================================
   Services
   ============================================ */
.services {
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-line);
}

.service {
  padding: var(--space-xl) var(--space-lg);
  border-right: 1px solid var(--color-line);
  position: relative;
  transition: background var(--t-med) var(--ease);
  cursor: pointer;
  overflow: hidden;
}

.service:last-child { border-right: none; }

.service-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.06;
  transition: opacity var(--t-slow) var(--ease);
  z-index: 0;
}

.service:hover .service-bg {
  opacity: 0.15;
}

.service > * {
  position: relative;
  z-index: 1;
}

.service::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-slow) var(--ease);
}

.service:hover {
  background: rgba(201, 169, 97, 0.03);
}

.service:hover::before {
  transform: scaleX(1);
}

.service-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-md);
}

.service-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-lg);
  color: var(--color-accent);
}

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

.service h3 em {
  font-style: italic;
  font-weight: 300;
  color: var(--color-text-muted);
}

.service p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.service-list {
  list-style: none;
  margin-bottom: var(--space-lg);
}

.service-list li {
  padding: 0.6rem 0;
  border-top: 1px dashed var(--color-line);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.service-list li::before {
  content: "—";
  color: var(--color-accent);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: gap var(--t-fast) var(--ease);
}

.service:hover .service-link {
  gap: 0.9rem;
}

/* ============================================
   Projects
   ============================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}

.project {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  background: var(--color-surface);
  aspect-ratio: 4 / 5;
  cursor: pointer;
}

.project:nth-child(1) { grid-column: span 5; aspect-ratio: 1 / 1; }
.project:nth-child(2) { grid-column: span 7; aspect-ratio: 16 / 11; }
.project:nth-child(3) { grid-column: span 4; }
.project:nth-child(4) { grid-column: span 4; }
.project:nth-child(5) { grid-column: span 4; }
.project:nth-child(6) { grid-column: span 7; aspect-ratio: 16 / 9; }
.project:nth-child(7) { grid-column: span 5; aspect-ratio: 1 / 1; }

.project-img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform var(--t-slow) var(--ease);
}

.project:hover .project-img {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 20, 16, 0.95) 0%, rgba(15, 20, 16, 0.4) 50%, transparent 100%);
  z-index: 1;
}

.project-content {
  position: absolute;
  inset: 0;
  padding: var(--space-lg);
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.project-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.project h4 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.project-loc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Image placeholder pattern - works without real images */
.project-img.placeholder {
  background: 
    linear-gradient(135deg, rgba(201, 169, 97, 0.06) 0%, transparent 50%),
    linear-gradient(45deg, rgba(90, 117, 96, 0.08) 0%, transparent 50%),
    var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.project-img.placeholder::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 20px,
      rgba(201, 169, 97, 0.04) 20px,
      rgba(201, 169, 97, 0.04) 21px
    );
}

/* ============================================
   Clients
   ============================================ */
.clients {
  padding: var(--space-2xl) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  overflow: hidden;
}

.clients-head {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.clients-head .eyebrow {
  display: block;
  margin-bottom: var(--space-sm);
}

.clients-head h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  max-width: 700px;
  margin: 0 auto;
}

.client-marquee {
  display: flex;
  gap: var(--space-2xl);
  animation: marquee 40s linear infinite;
  width: max-content;
}

.client-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-style: italic;
  color: var(--color-text-muted);
  white-space: nowrap;
  letter-spacing: -0.01em;
  opacity: 0.6;
  transition: opacity var(--t-fast) var(--ease);
}

.client-logo:hover {
  opacity: 1;
  color: var(--color-text);
}

.client-sep {
  color: var(--color-accent);
  font-size: 1.2rem;
  align-self: center;
}

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

/* ============================================
   Approach / Philosophy
   ============================================ */
.approach {
  position: relative;
}

.approach-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.approach-text h2 {
  margin-bottom: var(--space-lg);
}

.approach-text p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  line-height: 1.75;
  margin-bottom: var(--space-md);
}

.approach-pillars {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.pillar {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-line);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-lg);
  align-items: start;
}

.pillar:last-child {
  border-bottom: 1px solid var(--color-line);
}

.pillar-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--color-accent);
  font-style: italic;
  font-weight: 300;
  line-height: 1;
}

.pillar h4 {
  margin-bottom: 0.5rem;
}

.pillar p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ============================================
   CTA Block
   ============================================ */
.cta-block {
  position: relative;
  padding: var(--space-3xl) 0;
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  text-align: center;
  overflow: hidden;
}

.cta-block::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(201, 169, 97, 0.08) 0%, transparent 60%);
}

.cta-block .container {
  position: relative;
  z-index: 2;
}

.cta-block h2 {
  max-width: 800px;
  margin: 0 auto var(--space-lg);
}

.cta-block .lede {
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: var(--space-2xl) 0 var(--space-lg);
  background: var(--color-bg);
  border-top: 1px solid var(--color-line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand p {
  color: var(--color-text-muted);
  margin-top: var(--space-md);
  max-width: 360px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer-col h5 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-col a {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  transition: color var(--t-fast) var(--ease);
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-dim);
  letter-spacing: 0.05em;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ============================================
   Page Hero (for inner pages)
   ============================================ */
.page-hero {
  padding: calc(var(--header-h) + var(--space-2xl)) 0 var(--space-xl);
  border-bottom: 1px solid var(--color-line);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 80% 20%, rgba(201, 169, 97, 0.08) 0%, transparent 50%),
    var(--color-bg);
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-text-dim);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.page-hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  max-width: 900px;
  margin-bottom: var(--space-md);
}

.page-hero h1 em {
  font-style: italic;
  font-weight: 300;
  color: var(--color-accent);
}

.page-hero .lede {
  max-width: 680px;
}

/* ============================================
   Service Detail Page
   ============================================ */
.service-detail {
  padding: var(--space-3xl) 0;
}

.service-detail-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-2xl);
}

.service-detail h2 {
  margin-bottom: var(--space-lg);
}

.service-detail-side {
  position: sticky;
  top: calc(var(--header-h) + var(--space-lg));
  align-self: start;
}

.capability-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: var(--space-xl) 0;
  border-top: 1px solid var(--color-line);
}

.capability-list li {
  padding: var(--space-md) var(--space-md) var(--space-md) 0;
  border-bottom: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.95rem;
}

.capability-list li::before {
  content: "+";
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1;
}

/* ============================================
   Contact
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-2xl);
}

.contact-info-block {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-line);
}

.contact-info-block:last-child {
  border-bottom: none;
}

.contact-info-block .eyebrow {
  display: block;
  margin-bottom: var(--space-sm);
}

.contact-info-block p,
.contact-info-block a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.4;
  color: var(--color-text);
}

.contact-info-block a:hover {
  color: var(--color-accent);
}

.form {
  background: var(--color-bg-soft);
  padding: var(--space-xl);
  border: 1px solid var(--color-line);
  border-radius: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

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

.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-dim);
  margin-bottom: 0.5rem;
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 0.85rem 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-line-strong);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--t-fast) var(--ease);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-bottom-color: var(--color-accent);
}

.form-field textarea {
  min-height: 120px;
  resize: vertical;
  font-family: var(--font-body);
}

.form-field select option {
  background: var(--color-bg);
}

/* ============================================
   Animations
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .section-head {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .service {
    border-right: none;
    border-bottom: 1px solid var(--color-line);
  }
  
  .approach-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .service-detail-grid {
    grid-template-columns: 1fr;
  }
  
  .service-detail-side {
    position: static;
  }
  
  .projects-grid {
    grid-template-columns: repeat(6, 1fr);
  }
  
  .project:nth-child(n) {
    grid-column: span 3;
    aspect-ratio: 4/5;
  }
}

@media (max-width: 768px) {
  :root {
    --space-3xl: 5rem;
    --space-2xl: 4rem;
  }
  
  .nav { display: none; }
  .menu-toggle { display: block; }
  
  .nav.is-open {
    display: flex;
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-xl) var(--space-lg);
    gap: var(--space-md);
    align-items: flex-start;
    border-top: 1px solid var(--color-line);
  }
  
  .nav.is-open a {
    font-size: 1.5rem;
    font-family: var(--font-display);
    color: var(--color-text);
  }
  
  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .project:nth-child(n) {
    grid-column: span 1;
    aspect-ratio: 4/3;
  }
  
  .capability-list {
    grid-template-columns: 1fr;
  }
  
  .header-inner .btn-primary {
    display: none;
  }
}