/* ============================================================
   CUSTOM PROPERTIES
   ============================================================ */
:root {
  --color-bg: #ffffff;
  --color-text: #0a0a0a;
  --color-text-muted: #64748b;
  --color-accent: #00d9ff;
  --color-surface: #f8fafc;
  --color-border: #f1f5f9;
  --color-dark: #020617;

  --font-display: 'Archivo', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --max-width: 1200px;
  --nav-height: 80px;
  --nav-height-scrolled: 60px;

  --transition-base: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  background: none;
  border: none;
}

/* ============================================================
   TYPOGRAPHY SCALE
   ============================================================ */
.font-display {
  font-family: var(--font-display);
  font-weight: 900;
}

.font-mono {
  font-family: var(--font-mono);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

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

/* ============================================================
   FOCUS STYLES (WCAG AA)
   ============================================================ */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ============================================================
   SKIP LINK
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--color-dark);
  color: #fff;
  font-weight: 600;
  font-size: 0.875rem;
  z-index: 9999;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  top: 0;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid transparent;
  transition: padding var(--transition-base), border-color var(--transition-base);
}

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

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: height var(--transition-base);
}

.nav.scrolled .nav__inner {
  height: var(--nav-height-scrolled);
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.375rem;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.nav__links {
  display: flex;
  gap: 2.5rem;
}

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

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

.nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.625rem 1.25rem;
  background: var(--color-text);
  color: var(--color-bg);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 4px;
  transition: opacity var(--transition-base);
}

.nav__cta:hover {
  opacity: 0.85;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  z-index: 200;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.nav__mobile {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 150;
  display: flex;
  flex-direction: column;
  padding: calc(var(--nav-height) + 2rem) 1.25rem 2rem;
  gap: 1.5rem;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.nav__mobile.open {
  transform: translateX(0);
}

.nav__mobile a {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 2rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav__mobile .nav__cta {
  align-self: flex-start;
  margin-top: 1rem;
  font-size: 1.125rem;
  padding: 0.875rem 1.75rem;
}

@media (max-width: 768px) {
  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__inner {
    padding: 0 1.25rem;
  }
}

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

.hero__bg-letter {
  position: absolute;
  top: 50%;
  right: -5%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(300px, 40vw, 600px);
  color: var(--color-border);
  line-height: 1;
  user-select: none;
  pointer-events: none;
  will-change: transform;
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 2rem;
}

.hero__inner {
  max-width: 800px;
}

.hero__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 2rem;
}

.hero__headline {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  will-change: transform;
}

.hero__subline {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: 2.5rem;
  will-change: transform;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.75rem;
  background: var(--color-text);
  color: var(--color-bg);
  font-weight: 600;
  font-size: 1rem;
  border-radius: 4px;
  transition: opacity var(--transition-base);
}

.btn-primary:hover {
  opacity: 0.85;
}

.btn-ghost {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  transition: color var(--transition-base);
}

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

@media (max-width: 768px) {
  .hero__content {
    padding: 3rem 1.25rem;
  }

  .hero__bg-letter {
    right: -15%;
    opacity: 0.5;
  }
}

/* ============================================================
   SECTION SHARED
   ============================================================ */
.section {
  padding: 7rem 0;
}

.section--surface {
  background: var(--color-surface);
}

.section__header {
  margin-bottom: 4rem;
}

.section__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  display: block;
}

.section__title {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  letter-spacing: -0.02em;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--color-bg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  border: 1.5px solid #d1d5db;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.service-card__number {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.service-card__title {
  font-size: 1.375rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.service-card__body {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  flex: 1;
}

.service-card__link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: 0.5rem;
  transition: gap var(--transition-base);
}

.service-card__link:hover {
  gap: 0.625rem;
}

@media (max-width: 900px) {
  .services__grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 4rem 0;
  }
}

/* ============================================================
   HOW WE WORK
   ============================================================ */
.steps__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  position: relative;
}

.steps__grid::before {
  content: '';
  position: absolute;
  top: 2.5rem;
  left: calc(100% / 6);
  right: calc(100% / 6);
  height: 1px;
  background: var(--color-border);
  pointer-events: none;
}

.step {
  padding: 2.5rem;
  position: relative;
}

.step__number {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 5rem;
  color: #cbd5e1;
  line-height: 1;
  margin-bottom: 1.5rem;
  user-select: none;
}

.step__title {
  font-size: 1.1875rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}

.step__body {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

@media (max-width: 900px) {
  .steps__grid {
    grid-template-columns: 1fr;
  }

  .steps__grid::before {
    display: none;
  }

  .step {
    padding: 2rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .step:last-child {
    border-bottom: none;
  }
}

/* ============================================================
   OUTCOMES STRIP
   ============================================================ */
.outcomes {
  padding: 5rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.outcomes__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.outcome {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.outcome__value {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.03em;
  line-height: 1;
}

.outcome__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  line-height: 1.5;
}

@media (max-width: 900px) {
  .outcomes__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }
}

@media (max-width: 480px) {
  .outcomes__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

/* ============================================================
   WHO WE ARE
   ============================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 6rem;
  align-items: center;
}

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

.about__image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.about__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 5rem;
  color: var(--color-border);
  background: var(--color-surface);
}

.about__body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.about__text {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.about__entity {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.7;
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--color-accent);
  background: var(--color-surface);
  border-radius: 0 4px 4px 0;
}

.about__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

.about__badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: 100px;
}

@media (max-width: 900px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .about__image-wrapper {
    max-width: 360px;
    margin: 0 auto;
  }
}

/* ============================================================
   FAQ
   ============================================================ */
.faq__list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--color-border);
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__question {
  width: 100%;
  text-align: left;
  padding: 1.5rem 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: '+';
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq__item[open] .faq__question::after {
  transform: rotate(45deg);
}

.faq__answer {
  padding: 0 0 1.5rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 680px;
}

/* ============================================================
   CTA BLOCK
   ============================================================ */
.cta-block {
  background: var(--color-dark);
  padding: 7rem 0;
  text-align: center;
}

.cta-block__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  display: block;
}

.cta-block__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: #fff;
  margin-bottom: 1.25rem;
}

.cta-block__sub {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.6);
  max-width: 520px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.btn-light {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.75rem;
  background: #fff;
  color: var(--color-dark);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 4px;
  transition: opacity var(--transition-base);
}

.btn-light:hover {
  opacity: 0.9;
}

.cta-block__alt {
  display: block;
  margin-top: 1.25rem;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.45);
  transition: color var(--transition-base);
}

.cta-block__alt:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 2.5rem 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__copy {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.35);
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.45);
  transition: color var(--transition-base);
}

.footer__links a:hover {
  color: rgba(255, 255, 255, 0.85);
}

.footer__tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.25);
}

@media (max-width: 768px) {
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================================
   CLIENT LOGO STRIP
   ============================================================ */
.clients {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.clients__label {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  opacity: 0.6;
}

.clients__marquee {
  overflow: hidden;
  user-select: none;
  mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
}

.clients__track {
  display: flex;
  align-items: center;
  gap: 6rem;
  width: max-content;
  animation: marquee 28s linear infinite;
}

.clients__marquee:hover .clients__track {
  animation-play-state: paused;
}

.client-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  color: #94a3b8;
  white-space: nowrap;
  transition: color var(--transition-base);
  flex-shrink: 0;
}

.client-logo--img {
  height: 32px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  color: #0a0a0a;
  filter: grayscale(1) opacity(0.45);
  transition: filter var(--transition-base);
}

.clients__marquee:hover .client-logo {
  color: #64748b;
}

.clients__marquee:hover .client-logo--img {
  filter: grayscale(1) opacity(0.6);
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(calc(-1 * var(--marquee-distance, 50%))); }
}

@media (prefers-reduced-motion: reduce) {
  .clients__track {
    animation: none;
    width: auto;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
  }

  .clients__marquee {
    mask-image: none;
    -webkit-mask-image: none;
  }

  /* Hide duplicate items (they have empty alt, use that as selector hook) */
  .clients__track img[alt=""],
  .clients__track span:nth-child(n+6) {
    display: none;
  }
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal--stagger.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: none; }
.reveal--stagger.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: none; }
.reveal--stagger.visible > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: none; }
.reveal--stagger.visible > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal--stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}