/* ==========================================================================
   Digital Systems LLC — Swiss / International Typographic Style
   ========================================================================== */

@font-face {
  font-family: "Suisse Intl";
  src: url("../fonts/SuisseIntl-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Suisse Intl";
  src: url("../fonts/SuisseIntl-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Suisse Intl";
  src: url("../fonts/SuisseIntl-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --black: #0a0a0a;
  --white: #ffffff;
  --gray-900: #1a1a1a;
  --gray-600: #6b6b6b;
  --gray-400: #a3a3a3;
  --gray-200: #e5e5e5;
  --gray-100: #f2f2f2;
  --accent: #e1000f;

  --font-sans: "Suisse Intl", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --container: 1280px;
  --gutter: clamp(20px, 4vw, 48px);

  --step-hero: clamp(2.5rem, 6vw, 6rem);
  --step-h1: clamp(2rem, 4.2vw, 3.75rem);
  --step-h2: clamp(1.5rem, 2.6vw, 2.25rem);
  --step-body: 1.0625rem;
  --step-small: 0.8125rem;

  --ease: cubic-bezier(0.65, 0, 0.35, 1);
}

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

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

body {
  margin: 0;
  background: var(--white);
  color: var(--black);
  font-family: var(--font-sans);
  font-size: var(--step-body);
  line-height: 1.5;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

h1,
h2,
h3,
p {
  margin: 0;
}

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

::selection {
  background: var(--black);
  color: var(--white);
}

/* ---- Layout helpers ---- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
}

.eyebrow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  min-width: 0;
  gap: 0.6em;
  font-size: var(--step-small);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-600);
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

.rule {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: 0;
}

.section {
  padding: clamp(64px, 10vw, 140px) 0;
  border-top: 1px solid var(--gray-200);
}

.section-head {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.section-head h2 {
  font-size: var(--step-h1);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  max-width: 14ch;
}

.lede {
  grid-column: 1 / -1;
  max-width: 46ch;
  font-size: 1.125rem;
  color: var(--gray-600);
}

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--gray-200);
}

/* Blur lives on a pseudo-layer, not .site-header itself — backdrop-filter on
   the header would create a new containing block for its position:fixed
   .nav-links descendant, breaking its full-viewport mobile overlay sizing. */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  min-width: 0;
  gap: 8px;
}

.logo span {
  color: var(--gray-400);
  font-weight: 400;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 40px);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 40px);
}

.nav a {
  font-size: var(--step-small);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gray-600);
  transition: color 0.2s var(--ease);
}

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

.nav .btn {
  color: var(--white);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--black);
  color: var(--white);
  padding: 12px 22px;
  font-size: var(--step-small);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
  white-space: nowrap;
}

.btn:hover {
  background: var(--accent);
}

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

.btn-outline:hover {
  background: var(--black);
  color: var(--white);
}

.menu-toggle {
  display: none;
  width: 32px;
  height: 20px;
  position: relative;
}

.menu-toggle span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--black);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.menu-toggle span:nth-child(1) {
  top: 0;
}

.menu-toggle span:nth-child(2) {
  top: 50%;
  transform: translateY(-50%);
}

.menu-toggle span:nth-child(3) {
  bottom: 0;
}

body.nav-open .menu-toggle span:nth-child(1) {
  transform: translateY(9.5px) rotate(45deg);
}

body.nav-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

body.nav-open .menu-toggle span:nth-child(3) {
  transform: translateY(-9.5px) rotate(-45deg);
}

/* ---- Hero ---- */
.hero {
  padding: clamp(72px, 12vw, 160px) 0 clamp(56px, 8vw, 96px);
}

.hero .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: 28px;
}

.hero h1 {
  grid-column: 1 / -1;
  font-size: var(--step-hero);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.02;
  max-width: 16ch;
}

.hero .hero-sub {
  grid-column: 1 / span 6;
  margin-top: clamp(28px, 4vw, 44px);
  font-size: 1.125rem;
  color: var(--gray-600);
  max-width: 42ch;
}

.hero .hero-actions {
  grid-column: 8 / span 5;
  margin-top: clamp(28px, 4vw, 44px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.hero .hero-actions .btn {
  min-width: 200px;
  justify-content: center;
}

.hero-meta {
  grid-column: 1 / -1;
  margin-top: clamp(56px, 8vw, 96px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 48px;
  padding-top: 28px;
  border-top: 1px solid var(--gray-200);
}

.hero-meta div {
  font-size: var(--step-small);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gray-600);
}

.hero-meta strong {
  display: block;
  font-size: 1.5rem;
  color: var(--black);
  font-weight: 500;
  text-transform: none;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

/* ---- Work / Portfolio ---- */
.work-list {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0 var(--gutter);
}

.work-item {
  display: grid;
  grid-template-columns: subgrid;
  grid-column: 1 / -1;
  padding: clamp(32px, 5vw, 56px) 0;
  border-top: 1px solid var(--gray-200);
  align-items: baseline;
  transition: background 0.25s var(--ease);
}

.work-item:last-child {
  border-bottom: 1px solid var(--gray-200);
}

.work-index {
  grid-column: 1 / span 1;
  font-size: var(--step-small);
  color: var(--gray-400);
  font-weight: 500;
}

.work-name {
  grid-column: 2 / span 4;
  font-size: clamp(1.5rem, 2.6vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  min-width: 0;
  gap: 14px;
}

.work-name .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

.work-desc {
  grid-column: 6 / span 5;
  color: var(--gray-600);
  max-width: 48ch;
}

.work-link {
  grid-column: 11 / span 2;
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--step-small);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.work-link svg {
  width: 14px;
  height: 14px;
  transition: transform 0.2s var(--ease);
}

.work-item:hover .work-link svg {
  transform: translate(3px, -3px);
}

.work-tags {
  grid-column: 2 / span 9;
  margin-top: 14px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
  padding: 5px 10px;
}

/* ---- Services ---- */
.services-list {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
}

.service-item {
  grid-column: span 6;
  padding: clamp(28px, 4vw, 40px) 0;
  border-top: 1px solid var(--gray-200);
  display: grid;
  grid-template-columns: subgrid;
  grid-column: span 6 / span 6;
}

.service-item .service-index {
  font-size: var(--step-small);
  color: var(--gray-400);
  font-weight: 500;
  grid-column: 1;
}

.service-item .service-body {
  grid-column: 2 / -1;
}

.service-item h3 {
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.service-item p {
  color: var(--gray-600);
  max-width: 38ch;
}

/* ---- About / Story ---- */
.about-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
  align-items: start;
}

.about-body {
  grid-column: 1 / span 7;
  font-size: 1.375rem;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--gray-900);
}

.about-body strong {
  font-weight: 500;
  color: var(--black);
}

.about-stats {
  grid-column: 9 / span 4;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.about-stats div {
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
}

.about-stats strong {
  display: block;
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.about-stats span {
  font-size: var(--step-small);
  color: var(--gray-600);
  letter-spacing: 0.02em;
}

/* ---- Contact ---- */
.contact-section {
  padding-bottom: clamp(72px, 10vw, 140px);
}

.contact-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
  align-items: end;
}

.contact-copy {
  grid-column: 1 / span 6;
}

.contact-copy h2 {
  font-size: var(--step-h1);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: 20px;
}

.contact-copy p {
  color: var(--gray-600);
  max-width: 40ch;
}

.contact-email {
  grid-column: 7 / span 6;
  justify-self: end;
  text-align: right;
}

.contact-email a {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--black);
  padding-bottom: 6px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.contact-email a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.contact-email p {
  margin-top: 14px;
  font-size: var(--step-small);
  color: var(--gray-600);
  letter-spacing: 0.02em;
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--gray-200);
  padding: 40px 0;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: var(--step-small);
  color: var(--gray-600);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: var(--step-small);
  color: var(--gray-600);
  transition: color 0.2s var(--ease);
}

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

/* ---- Legal pages ---- */
.legal {
  padding: clamp(64px, 10vw, 120px) 0 clamp(80px, 10vw, 140px);
}

.legal-header {
  grid-column: 1 / -1;
  max-width: 60ch;
  margin-bottom: clamp(48px, 6vw, 80px);
}

.legal-header h1 {
  font-size: var(--step-h1);
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.legal-header p {
  color: var(--gray-600);
}

.legal-body {
  grid-column: 1 / span 8;
}

.legal-body h2 {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-top: 44px;
  margin-bottom: 14px;
}

.legal-body h2:first-child {
  margin-top: 0;
}

.legal-body p,
.legal-body li {
  color: var(--gray-600);
  margin-bottom: 14px;
}

.legal-body ul {
  padding-left: 1.2em;
  list-style: disc;
}

.legal-body a {
  color: var(--black);
  border-bottom: 1px solid var(--gray-400);
}

.legal-body a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.legal-nav {
  grid-column: 10 / span 3;
  position: sticky;
  top: 100px;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-left: 1px solid var(--gray-200);
  padding-left: 20px;
}

.legal-nav a {
  font-size: var(--step-small);
  color: var(--gray-600);
  letter-spacing: 0.02em;
}

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

/* ---- Responsive ---- */
@media (max-width: 980px) {
  .grid,
  .services-list,
  .about-grid,
  .contact-grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .service-item,
  .service-item.service-item {
    grid-column: 1 / -1 !important;
  }

  .about-body {
    grid-column: 1 / -1;
  }

  .about-stats {
    grid-column: 1 / -1;
    flex-direction: row;
    flex-wrap: wrap;
    margin-top: 32px;
  }

  .about-stats > div {
    flex: 1 1 40%;
  }

  .contact-copy,
  .contact-email {
    grid-column: 1 / -1;
    justify-self: start;
    text-align: left;
  }

  .contact-email {
    margin-top: 32px;
  }

  .legal-body {
    grid-column: 1 / -1;
  }

  .legal-nav {
    display: none;
  }

  .hero .hero-sub,
  .hero .hero-actions {
    grid-column: 1 / -1;
  }

  .hero .hero-actions {
    align-items: stretch;
  }

  .hero .hero-actions .btn {
    width: 100%;
  }

  .work-item {
    grid-template-columns: repeat(6, 1fr);
  }

  .work-name {
    grid-column: 1 / -1;
  }

  .work-desc {
    grid-column: 1 / -1;
    margin-top: 12px;
  }

  .work-tags {
    grid-column: 1 / -1;
  }

  .work-link {
    grid-column: 1 / -1;
    justify-self: start;
    margin-top: 16px;
  }

  .work-index {
    grid-column: 1 / -1;
    margin-bottom: 8px;
  }
}

@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    top: 76px;
    right: 0;
    bottom: 0;
    left: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px var(--gutter);
    gap: 24px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
  }

  body.nav-open .nav-links {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-links a {
    font-size: 1.5rem;
    text-transform: none;
    font-weight: 500;
    color: var(--black);
    letter-spacing: -0.01em;
  }

  .nav .btn {
    display: none;
  }

  .menu-toggle {
    display: block;
  }
}