:root {
  --dominant: #F4F4F6;
  --secondary: #1A1D20;
  --accent: #DF2935;
  --grey-200: #E8E8EB;
  --grey-300: #D1D1D6;
  --grey-400: #A0A0A8;
  --grey-500: #6E6E78;
  --surface: #FFFFFF;
  --nav-bg: rgba(244, 244, 246, 0.65);
  --success-bg: #f0fdf4;
  --success-border: #bbf7d0;
  --success-text: #16a34a;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
}

[data-theme="dark"] {
  --dominant: #1A1D20;
  --secondary: #F4F4F6;
  --grey-200: #2a2d32;
  --grey-300: #3a3d44;
  --grey-400: #8a8a94;
  --grey-500: #a0a0aa;
  --surface: #22252a;
  --nav-bg: rgba(26, 29, 32, 0.8);
  --success-bg: #0a2618;
  --success-border: #166534;
  --success-text: #4ade80;
  --error-bg: #2a0a0a;
  --error-border: #7f1d1d;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--dominant);
  color: var(--secondary);
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

::selection {
  background: var(--accent);
  color: #fff;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--grey-200);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 2rem;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--secondary);
  text-decoration: none;
  letter-spacing: -0.5px;
  z-index: 201;
  position: relative;
}

.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--grey-500);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--secondary) !important;
  color: var(--dominant) !important;
  padding: 0.5rem 1.2rem;
  border-radius: 6px;
  font-size: 0.85rem !important;
  transition: background 0.2s !important;
}

.nav-cta:hover {
  background: var(--accent) !important;
  color: #fff !important;
}

/* ── HAMBURGER ── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
  z-index: 201;
  position: relative;
  width: 28px;
  height: 20px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--secondary);
  transition: all 0.3s ease;
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── MOBILE MENU OVERLAY ── */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 29, 32, 0.3);
  z-index: 199;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: 300px;
  max-width: 85vw;
  height: 100vh;
  background: var(--dominant);
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--grey-200);
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  padding: 6rem 2rem 2rem;
  flex: 1;
}

.mobile-menu-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-menu-links li {
  border-bottom: 1px solid var(--grey-200);
}

.mobile-menu-links a {
  display: block;
  padding: 1.1rem 0;
  text-decoration: none;
  color: var(--secondary);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.2px;
  transition: color 0.2s;
}

.mobile-menu-links a:hover {
  color: var(--accent);
}

.mobile-menu-cta {
  margin-top: 2rem;
}

.mobile-menu-cta .btn {
  width: 100%;
  justify-content: center;
}

/* ── BODY SCROLL LOCK ── */
body.menu-open {
  overflow: hidden;
}

/* ── SHARED ── */
section { padding: 7rem 2rem; }

.container { max-width: 1120px; margin: 0 auto; }

.mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  display: block;
}

.heading {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -1.5px;
  line-height: 1.1;
  color: var(--secondary);
  margin-bottom: 1rem;
}

.subtext {
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--grey-500);
  line-height: 1.7;
  max-width: 520px;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.75rem;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  font-family: inherit;
}

.btn-dark {
  background: var(--secondary);
  color: var(--dominant);
}

.btn-dark:hover {
  background: var(--accent);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--secondary);
  border: 1.5px solid var(--grey-300);
}

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

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: #c8212d;
}

.arrow { font-size: 1.1rem; transition: transform 0.2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ── 1. HERO ── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  background: var(--dominant);
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text h1 {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -2.5px;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}

.hero-text h1 .accent { color: var(--accent); }

.hero-text p {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--grey-500);
  line-height: 1.7;
  max-width: 440px;
  margin-bottom: 2.5rem;
}

.hero-actions { display: flex; gap: 1rem; }

.hero-visual {
  display: flex;
  justify-content: flex-end;
}

.hero-block {
  width: 420px;
  background: var(--secondary);
  border-radius: 16px;
  padding: 2.5rem;
  color: var(--dominant);
  position: relative;
  overflow: hidden;
}

.hero-block::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.15;
}

.hero-block .mono { color: var(--accent); margin-bottom: 2rem; }

.hero-stat-row {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
}

.hero-stat h3 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -1px;
}

.hero-stat span {
  font-size: 0.8rem;
  color: var(--grey-400);
  font-weight: 400;
}

.hero-stack {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.hero-stack span {
  background: rgba(244, 244, 246, 0.08);
  border: 1px solid rgba(244, 244, 246, 0.12);
  padding: 0.35rem 0.8rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--grey-300);
}

/* ── 2. SERVICES ── */
#services {
  background: var(--surface);
  border-top: 1px solid var(--grey-200);
  border-bottom: 1px solid var(--grey-200);
}

.services-header { margin-bottom: 4rem; }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--grey-200);
  border: 1px solid var(--grey-200);
  border-radius: 12px;
  overflow: hidden;
}

.service-item {
  background: var(--surface);
  padding: 2.5rem;
  transition: background 0.3s;
}

.service-item:hover {
  background: var(--dominant);
}

.service-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: block;
}

.service-item h3 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.3px;
  margin-bottom: 0.75rem;
}

.service-item p {
  font-size: 0.9rem;
  color: var(--grey-500);
  line-height: 1.6;
  font-weight: 300;
}

/* ── COMPANIES TICKER ── */
#companies {
  background: var(--secondary);
  padding: 3rem 0;
  overflow: hidden;
}

.companies-inner {
  max-width: 1120px;
  margin: 0 auto;
}

#companies .mono {
  color: var(--accent);
}

.ticker-wrap {
  width: 100%;
  overflow: hidden;
  position: relative;
}

.ticker-wrap::before,
.ticker-wrap::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}

.ticker-wrap::before {
  left: 0;
  background: linear-gradient(to right, var(--secondary), transparent);
}

.ticker-wrap::after {
  right: 0;
  background: linear-gradient(to left, var(--secondary), transparent);
}

@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.ticker {
  display: flex;
  width: max-content;
  animation: ticker-scroll 25s linear infinite;
}

.ticker:hover {
  animation-play-state: paused;
}

.ticker-item {
  flex-shrink: 0;
  padding: 0 3rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--grey-400);
  white-space: nowrap;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s;
  text-decoration: none;
}

.ticker-item svg {
  width: 18px;
  height: 18px;
  stroke-width: 1.5;
  flex-shrink: 0;
}

.ticker-item:hover {
  color: var(--accent);
}

/* ── 3. WORK ── */
#work { background: var(--dominant); }

.work-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 4rem;
}

.work-grid {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--grey-200);
  border: 1px solid var(--grey-200);
  border-radius: 12px;
  overflow: hidden;
}

.work-item {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  align-items: center;
  background: var(--surface);
  padding: 2.5rem;
  transition: all 0.25s;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.work-item:hover {
  background: var(--secondary);
  color: var(--dominant);
}

.work-item:hover .work-cat { color: var(--grey-400); }
.work-item:hover .work-arrow { color: var(--accent); }

.work-title {
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.work-cat {
  font-size: 0.8rem;
  color: var(--grey-500);
  font-weight: 400;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color 0.25s;
}

.work-arrow {
  text-align: right;
  font-size: 1.5rem;
  color: var(--grey-300);
  transition: all 0.25s;
}

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

/* ── 4. ABOUT ── */
#about {
  background: var(--secondary);
  color: var(--dominant);
}

#about .mono { color: var(--accent); }

.about-heading {
  color: var(--dominant);
}

[data-theme="dark"] #about {
  background: var(--surface);
  color: var(--secondary);
}

[data-theme="dark"] .about-heading {
  color: var(--secondary);
}

[data-theme="dark"] .about-text p strong {
  color: var(--secondary);
}

[data-theme="dark"] .about-text p {
  color: var(--grey-500);
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}

.about-text p {
  font-size: 1.05rem;
  font-weight: 300;
  line-height: 1.8;
  color: var(--grey-400);
  margin-bottom: 1.5rem;
}

.about-text p strong {
  color: var(--dominant);
  font-weight: 500;
}

.about-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1rem;
}

.metric {
  border-left: 2px solid var(--accent);
  padding-left: 1.25rem;
}

.metric h3 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 0.25rem;
}

.metric span {
  font-size: 0.8rem;
  color: var(--grey-500);
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.about-cta {
  margin-top: 3rem;
}

.about-cta .btn-accent:hover {
  background: var(--surface);
  color: var(--secondary);
}

/* ── 5. CONTACT ── */
#contact {
  background: var(--surface);
  border-top: 1px solid var(--grey-200);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
}

.contact-left .heading { margin-bottom: 1.5rem; }

.contact-left p {
  font-size: 1rem;
  font-weight: 300;
  color: var(--grey-500);
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
  text-decoration: none;
  color: var(--secondary);
  transition: color 0.2s;
}

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

.contact-link-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--dominant);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.contact-link span {
  font-size: 0.95rem;
  font-weight: 400;
}

.contact-address {
  font-style: normal;
}

.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }

.form-field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--grey-500);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--dominant);
  border: 1.5px solid var(--grey-200);
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--secondary);
  outline: none;
  transition: border-color 0.2s;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--accent);
}

.form-field textarea {
  resize: vertical;
  min-height: 130px;
}

.form-submit {
  align-self: flex-start;
  padding: 0.9rem 2.5rem;
}

.form-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-status {
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0;
  border-radius: 6px;
  min-height: 0;
  transition: all 0.3s ease;
}

.form-status--success {
  color: var(--success-text);
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  padding: 0.75rem 1rem;
}

.form-status--error {
  color: var(--accent);
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  padding: 0.75rem 1rem;
}

/* ── FOOTER ── */
footer {
  background: var(--secondary);
  color: var(--grey-400);
  padding: 3rem 2rem;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left { display: flex; align-items: center; gap: 2rem; }

.footer-logo {
  font-weight: 700;
  font-size: 1rem;
  color: var(--dominant);
  text-decoration: none;
}

.footer-logo span { color: var(--accent); }

.footer-copy {
  font-size: 0.8rem;
  color: var(--grey-500);
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  color: var(--grey-500);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

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

/* ── SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ── DARK MODE TOGGLE ── */
.theme-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 300;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px solid var(--grey-300);
  background: var(--surface);
  color: var(--secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  padding: 0;
  line-height: 1;
}

.theme-toggle:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
  transform: scale(1.08);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}

.theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

.theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  .hero-layout,
  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .hero-visual { display: none; }
  .hero-text h1 { font-size: 3rem; }
  .work-header { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .services-grid { grid-template-columns: 1fr; }
  .work-item { grid-template-columns: 1fr 2fr auto; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  section { padding: 5rem 1.25rem; }
  .hero-text h1 { font-size: 2.25rem; letter-spacing: -1.5px; }
  .heading { font-size: 2rem; }
  .work-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .work-arrow { text-align: left; }
  .form-row { grid-template-columns: 1fr; }
  .about-metrics { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 1.5rem; text-align: center; }
  .footer-left { flex-direction: column; gap: 0.5rem; }
}