/* ============================================
   Trust Domain Names — Design System
   ============================================ */

/* Tokens --------------------------------------------------------------- */
:root {
  /* Primitives in OKLCH */
  --bg: oklch(14.2% 0.01 85);
  --bg-elevated: oklch(18.5% 0.012 85);
  --surface: oklch(24% 0.015 85);
  --surface-hover: oklch(28% 0.018 85);
  --text: oklch(96% 0.01 85);
  --text-muted: oklch(70% 0.02 85);
  --text-dim: oklch(56% 0.02 85);
  --accent: oklch(68% 0.14 85);
  --accent-bright: oklch(74% 0.16 85);
  --accent-deep: oklch(54% 0.13 85);
  --accent-subtle: oklch(22% 0.04 85);
  --border: oklch(30% 0.015 85);
  --border-soft: oklch(22% 0.01 85);

  /* Motion */
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 500ms;
  --duration-hero: 900ms;

  /* Spacing */
  --container: 1200px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section: clamp(5rem, 12vw, 9rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
  cursor: pointer;
}

::selection {
  background: var(--accent-deep);
  color: var(--text);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 7px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--surface);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

/* Typography ----------------------------------------------------------- */
.font-display {
  font-family: "Playfair Display", Georgia, "Times New Roman", serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.text-balance {
  text-wrap: balance;
}

/* Layout --------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--section);
}

/* Background textures -------------------------------------------------- */
.bg-grid {
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.bg-grain {
  position: relative;
}
.bg-grain::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.04;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Navigation ----------------------------------------------------------- */
#navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background var(--duration-base) var(--ease-out-quart),
              border-color var(--duration-base) var(--ease-out-quart);
  border-bottom: 1px solid transparent;
}

#navbar.scrolled {
  background: rgba(15, 16, 18, 0.88);
  backdrop-filter: blur(12px);
  border-color: var(--border-soft);
}

.logo {
  display: block;
  height: 42px;
  width: auto;
}

@media (max-width: 768px) {
  .logo {
    height: 36px;
  }
}

.nav-link {
  position: relative;
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color var(--duration-fast) var(--ease-out-quart);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-out-quart);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  transform: scaleX(1);
}

/* Mobile menu */
#mobileMenuBtn {
  color: var(--text-muted);
  background: transparent;
  border: none;
  padding: 0.5rem;
  transition: color var(--duration-fast) var(--ease-out-quart);
}
#mobileMenuBtn:hover,
#mobileMenuBtn:focus-visible {
  color: var(--text);
}

#mobileMenu {
  position: absolute;
  inset: 100% 0 auto 0;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-soft);
  padding: 1.5rem var(--gutter);
  opacity: 0;
  transform: translateY(-12px);
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out-quart),
              transform var(--duration-base) var(--ease-out-quart);
}

#mobileMenu.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.mobile-link {
  display: block;
  padding-block: 0.875rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-soft);
  transition: color var(--duration-fast) var(--ease-out-quart);
}
.mobile-link:hover,
.mobile-link:focus-visible {
  color: var(--text);
}

/* Buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: background var(--duration-fast) var(--ease-out-quart),
              color var(--duration-fast) var(--ease-out-quart),
              border-color var(--duration-fast) var(--ease-out-quart),
              transform var(--duration-fast) var(--ease-out-quart);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-bright);
  transform: translateY(-1px);
}

.btn-outline {
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover,
.btn-outline:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

/* Eyebrow / label ------------------------------------------------------ */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--accent);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
}

/* Hero ----------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.hero-mark {
  position: absolute;
  right: -8vw;
  top: 50%;
  transform: translateY(-50%);
  width: min(55vw, 680px);
  height: auto;
  opacity: 0.05;
  color: var(--accent);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(2.75rem, 7.5vw, 6rem);
  max-width: 11ch;
}

.hero-subtitle {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 52ch;
  line-height: 1.7;
  margin-top: 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.5rem;
}

/* Service rows --------------------------------------------------------- */
.service-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding-block: clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--border-soft);
  transition: border-color var(--duration-base) var(--ease-out-quart);
}

.service-row:first-child {
  border-top: 1px solid var(--border-soft);
}

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

.service-number {
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  opacity: 0.8;
}

.service-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
  color: var(--text);
  margin: 0;
}

.service-desc {
  color: var(--text-muted);
  max-width: 48ch;
  margin-top: 0.75rem;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.tag {
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
}

@media (min-width: 768px) {
  .service-row {
    grid-template-columns: 90px 1fr 220px;
    align-items: start;
    gap: 2.5rem;
  }
  .service-meta {
    text-align: right;
  }
}

/* Process -------------------------------------------------------------- */
.process-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  counter-reset: process;
}

@media (min-width: 768px) {
  .process-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
  }
}

.process-step {
  position: relative;
  padding-top: 1.5rem;
}

.process-step::before {
  counter-increment: process;
  content: "0" counter(process);
  position: absolute;
  top: -0.75rem;
  left: 0;
  font-family: "Playfair Display", Georgia, serif;
  font-size: 4.5rem;
  font-weight: 600;
  color: var(--accent);
  opacity: 0.12;
  line-height: 1;
}

.process-step h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.5rem;
}

.process-step p {
  color: var(--text-muted);
  margin: 0;
}

/* Stats ---------------------------------------------------------------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border-soft);
  border: 1px solid var(--border-soft);
}

.stat-cell {
  background: var(--bg);
  padding: clamp(1.75rem, 4vw, 3rem);
  text-align: center;
}

.stat-value {
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 600;
  color: var(--text);
  line-height: 1;
}

.stat-label {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

@media (min-width: 768px) {
  .stat-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* CTA section ---------------------------------------------------------- */
.cta-box {
  position: relative;
  padding: clamp(3rem, 8vw, 6rem);
  background: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, var(--accent-subtle), transparent 50%);
  pointer-events: none;
}

.email-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: "Playfair Display", Georgia, serif;
  font-size: clamp(1.5rem, 4vw, 2.75rem);
  font-weight: 600;
  color: var(--accent);
  transition: color var(--duration-fast) var(--ease-out-quart);
}
.email-link:hover,
.email-link:focus-visible {
  color: var(--accent-bright);
}

/* Footer --------------------------------------------------------------- */
.footer {
  padding-block: 2.5rem;
  border-top: 1px solid var(--border-soft);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.footer-links a {
  transition: color var(--duration-fast) var(--ease-out-quart);
}
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text);
}

.copyright {
  font-size: 0.8125rem;
  color: var(--text-dim);
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* Legal pages ---------------------------------------------------------- */
.legal-page {
  padding-top: 8rem;
  padding-bottom: 5rem;
}

.legal-page h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 2rem;
}

.legal-page h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.legal-page p,
.legal-page li {
  color: var(--text-muted);
}

.legal-page a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Motion --------------------------------------------------------------- */
/* Default: visible. Only hide when JS is confirmed to be running. */
.on-enter {
  opacity: 1;
  transform: translateY(0);
}

.has-js .on-enter {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out-quart),
              transform var(--duration-slow) var(--ease-out-quart);
}

.has-js .on-enter.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero load choreography (fail-open) */
.hero .on-enter-load {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: no-preference) {
  .hero .on-enter-load {
    opacity: 0;
    transform: translateY(28px);
    animation: hero-rise var(--duration-hero) var(--ease-out-quint) forwards;
  }
  .hero .on-enter-load:nth-child(1) { animation-delay: 80ms; }
  .hero .on-enter-load:nth-child(2) { animation-delay: 180ms; }
  .hero .on-enter-load:nth-child(3) { animation-delay: 280ms; }
  .hero .on-enter-load:nth-child(4) { animation-delay: 380ms; }
}

@keyframes hero-rise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Reduced motion ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus ---------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Utilities ------------------------------------------------------------ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}