/* --- Variables --- */
:root {
  --bg: #fafafa;
  --bg-card: #ffffff;
  --text: #1a1a1a;
  --text-muted: #666666;
  --text-soft: #888888;
  --border: #e8e8e8;
  --accent: #1a1a2e;
  --accent-soft: #2d2d44;
  --font-display: "Google Sans", system-ui, sans-serif;
  --font-body: "Google Sans", system-ui, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --max-width: 72rem;
  --radius: 12px;
  --transition: 0.2s ease;
}

/* --- Reset & base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.nav ul {
  display: flex;
  gap: var(--space-lg);
}

.nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-xs);
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
}

/* --- Sections --- */
.section {
  padding: var(--space-3xl) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 400;
  margin: 0 0 var(--space-xl);
  color: var(--text);
  text-align: center;
}

/* --- Hero --- */
.hero {
  position: relative;
  padding: var(--space-3xl) var(--space-lg) var(--space-2xl);
  width: 100%;
  margin: 0;
  overflow: hidden;
}

.hero-pattern {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  color: var(--accent);
}

.hero-pattern-svg {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  min-width: 1200px;
  height: 100%;
  min-height: 100%;
  object-fit: cover;
  animation: heroBackgroundDrift 20s ease-in-out infinite alternate;
}

.hero-layer,
.hero-blob,
.hero-line {
  transform-box: fill-box;
  transform-origin: center;
}

.hero-blob {
  animation: heroBlobDrift 10s ease-in-out infinite alternate;
}

.hero-blob--2 {
  animation-duration: 12s;
  animation-delay: -2s;
}

.hero-line {
  animation: heroLineWave 12s ease-in-out infinite alternate;
}

.hero-line--2 {
  animation-duration: 14s;
  animation-delay: -3s;
}

.hero-layer--dots {
  animation: heroParallaxSlow 18s linear infinite alternate;
}

.hero-layer--grid {
  animation: heroParallaxSlow 22s linear infinite alternate-reverse;
}

@keyframes heroBlobDrift {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-30px, 18px, 0) scale(1.06);
  }
  100% {
    transform: translate3d(24px, -24px, 0) scale(1.03);
  }
}

@keyframes heroLineWave {
  0% {
    transform: translateY(0);
    opacity: 0.04;
  }
  50% {
    transform: translateY(-14px);
    opacity: 0.12;
  }
  100% {
    transform: translateY(8px);
    opacity: 0.06;
  }
}

@keyframes heroParallaxSlow {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(-60px, 28px, 0);
  }
}

@keyframes heroBackgroundDrift {
  0% {
    transform: translateX(-50%) translateY(0) scale(1);
  }
  50% {
    transform: translateX(-51%) translateY(-10px) scale(1.03);
  }
  100% {
    transform: translateX(-52%) translateY(6px) scale(1.02);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-label {
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-soft);
  margin: 0 0 var(--space-sm);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  font-weight: 400;
  line-height: 1.15;
  margin: 0 0 var(--space-md);
  max-width: 28ch;
  background: linear-gradient(90deg, rgba(42, 123, 155, 1) 0%, rgba(87, 199, 133, 1) 50%, rgba(237, 221, 83, 1) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.hero-meta {
  font-size: 0.9375rem;
  color: var(--text-soft);
  margin: 0 0 var(--space-xl);
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 42ch;
  margin: 0 0 var(--space-xl);
}

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

/* --- Brands --- */
.brands-intro {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-lg);
  text-align: center;
}

.brands .section-title {
  margin-bottom: var(--space-md);
}

.brands-logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  padding: var(--space-md) 0 var(--space-xl);
}

.brands-logos img {
  height: 32px;
  max-width: 120px;
  width: auto;
  filter: grayscale(1);
  opacity: 0.7;
  transition: opacity var(--transition), transform var(--transition), filter var(--transition);
}

.brands-logos img:hover {
  opacity: 0.9;
  filter: grayscale(0.2);
  transform: translateY(-1px);
}

.brands-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-lg);
}

.brand-card {
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.brand-card-icon,
.expertise-card-icon {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
  color: var(--accent);
  font-size: 1rem;
  background: #fff;
}

.brand-card-icon i {
  font-size: 1.25rem;
}

.brand-card-icon--workflows::before {
  content: "⇄";
}

.brand-card-icon--data::before {
  content: "▤";
}

.brand-card-icon--friction::before {
  content: "⚙";
}

.brand-card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  margin: 0 0 var(--space-sm);
}

.brand-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.55;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background: var(--accent-soft);
  border-color: var(--accent-soft);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--text-soft);
  color: var(--text-muted);
}

/* --- Work grid --- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: var(--space-xl);
}

.work-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.work-card:hover {
  border-color: var(--text-soft);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.work-card-image {
  aspect-ratio: 16 / 10;
  background: var(--tint, #1a1a2e);
  display: flex;
  align-items: center;
  justify-content: center;
}

.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.work-card-placeholder {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.work-card-content {
  padding: var(--space-lg);
}

.work-card-tag {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
  display: block;
  margin-bottom: var(--space-xs);
}

.work-card-title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 400;
  margin: 0 0 var(--space-xs);
}

.work-card-content p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-sm);
  line-height: 1.55;
}

.work-card-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--accent);
  transition: color var(--transition);
}

.work-card-link:hover {
  color: var(--accent-soft);
}

/* --- Expertise --- */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: var(--space-lg);
}

.expertise-card {
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.expertise-card-icon--leadership::before {
  content: "★";
}

.expertise-card-icon--data::before {
  content: "⧉";
}

.expertise-card-icon--systems::before {
  content: "▢";
}

.expertise-card-icon--research::before {
  content: "🔍";
}

.expertise-card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  margin: 0 0 var(--space-sm);
}

.expertise-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.55;
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.about-lead {
  font-size: 1.125rem;
  color: var(--text);
  margin: 0 0 var(--space-md);
}

.about-content p {
  color: var(--text-muted);
  margin: 0 0 var(--space-md);
  max-width: 55ch;
}

.about-focus {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: var(--space-lg) 0 0;
}

.about-focus li {
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
}

.about-meta dl {
  display: grid;
  gap: var(--space-sm);
  margin: 0;
}

.about-meta dt {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

.about-meta dd {
  font-size: 1rem;
  margin: 0;
  color: var(--text);
}

/* --- Contact --- */
.contact-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin: 0 0 var(--space-lg);
  max-width: 40ch;
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: center;
}

.contact-link {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  transition: color var(--transition);
}

.contact-link:hover {
  color: var(--accent-soft);
}

/* --- Footer --- */
.site-footer {
  padding: var(--space-xl) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  border-top: 1px solid var(--border);
}

.site-footer p {
  font-size: 0.875rem;
  color: var(--text-soft);
  margin: 0;
}

/* --- Mobile --- */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(280px, 85vw);
    padding: var(--space-3xl) var(--space-lg);
    background: var(--bg-card);
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform 0.25s ease;
    z-index: 99;
  }

  .nav.is-open {
    transform: translateX(0);
  }

  .nav ul {
    flex-direction: column;
    gap: var(--space-md);
  }

  .nav a {
    font-size: 1.125rem;
  }

  .menu-toggle {
    display: flex;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .menu-toggle span {
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .hero {
    padding-top: var(--space-2xl);
  }

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

  .work-grid {
    grid-template-columns: 1fr;
  }

  .brands-grid,
  .expertise-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    gap: var(--space-lg);
  }

  .about-meta {
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
  }
}

@media (min-width: 769px) {
  .about-grid {
    grid-template-columns: 1fr 200px;
    align-items: start;
  }
}