:root {
  --color-primary: #212121;
  --color-accent-soft: #f0f0f0;
  --color-border: #e8e8e8;
  --color-panel: #fcfcfc;
  --color-body-bg: #ffffff;
  --color-foreground: #1c1c1c;
  --color-muted: #8b8b8b;

  --radius-md: 8px;
  --radius-lg: 10px;

  --font-family: 'Google Sans', ui-sans-serif, system-ui, sans-serif;
  --max-width: 1040px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  background: var(--color-body-bg);
  color: var(--color-foreground);
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
}

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

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

/* Nav */

.nav {
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__logo {
  font-weight: 700;
  font-size: 15px;
  margin-right: auto;
}

.nav__links {
  display: flex;
  gap: 24px;
}

.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  transition: color 0.15s ease;
}

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

.nav__cta {
  font-size: 13px;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}

.nav__toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-foreground);
  border-radius: 2px;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.nav--open .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav--open .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav--open .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: inherit;
  font-weight: 500;
  font-size: 14px;
  border-radius: var(--radius-md);
  padding: 9px 16px;
  transition: opacity 0.15s ease;
}

.button--primary {
  color: #ffffff;
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
}

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

/* Hero */

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 88px 24px 64px;
}

.hero__eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 20px;
}

.hero__headline {
  font-size: clamp(32px, 4.4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  max-width: 780px;
  margin-bottom: 20px;
}

.hero__bio {
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-muted);
  max-width: 560px;
}

/* Work section */

.work {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 96px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Project cards */

.project-card {
  display: block;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.project-card:hover {
  border-color: var(--color-primary);
}

.project-card--featured {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
}

.project-card--featured .project-card__thumb {
  min-height: 320px;
}

.project-card__thumb {
  background: var(--color-accent-soft);
  min-height: 200px;
}

.project-card__thumb--hatch {
  background-image: repeating-linear-gradient(
    45deg,
    var(--color-border),
    var(--color-border) 1px,
    var(--color-accent-soft) 1px,
    var(--color-accent-soft) 12px
  );
}

.project-card__body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
}

.project-card__tags {
  display: flex;
  gap: 8px;
  margin-bottom: 4px;
}

.tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-muted);
}

.tag--solid {
  background: var(--color-primary);
  color: #ffffff;
}

.project-card__title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.project-card--featured .project-card__title {
  font-size: 26px;
}

.project-card__desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-muted);
}

.project-card__link {
  margin-top: 6px;
  font-size: 14px;
  font-weight: 600;
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.project-grid .project-card__body {
  padding: 20px;
}

.project-grid .project-card__title {
  font-size: 17px;
  margin-top: 6px;
}

.project-card--more {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 160px;
  background: transparent;
  border: 1px dashed var(--color-border);
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 500;
}

/* Access gate */

.work__inner {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.access-modal {
  position: fixed;
  inset: 0;
  background: rgba(28, 28, 28, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 100;
}

.access-gate {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  max-width: 420px;
  margin: 0 auto;
  text-align: center;
}

.access-gate__title {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.access-gate__body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
  margin-bottom: 24px;
}

.access-gate__form {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.access-gate__input-wrap {
  position: relative;
  flex: 1;
  min-width: 0;
  display: flex;
}

.access-gate__input {
  flex: 1;
  min-width: 0;
  font-family: inherit;
  font-size: 14px;
  padding: 9px 40px 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--color-foreground);
}

.access-gate__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.access-gate__toggle-visibility {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  padding: 0;
  color: var(--color-muted);
  cursor: pointer;
}

.access-gate__toggle-visibility:hover {
  color: var(--color-foreground);
}

.access-gate__toggle-visibility svg {
  width: 18px;
  height: 18px;
}

.access-gate__toggle-visibility .access-gate__eye-off {
  display: none;
}

.access-gate__toggle-visibility[aria-pressed="true"] .access-gate__eye {
  display: none;
}

.access-gate__toggle-visibility[aria-pressed="true"] .access-gate__eye-off {
  display: block;
}

.access-gate__error {
  font-size: 13px;
  color: #b3261e;
  margin-bottom: 12px;
}

.access-gate__request {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-muted);
}

.access-gate__request:hover {
  color: var(--color-foreground);
}

/* About */

.about {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 96px;
}

.about__heading {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.about__body {
  font-size: 17px;
  line-height: 1.7;
  max-width: 680px;
}

/* Footer */

.footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

.footer__copy {
  font-size: 13px;
  color: var(--color-muted);
}

.footer__links {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--color-muted);
}

.footer__links a:hover {
  color: var(--color-foreground);
}

/* Case study page */

.case-study {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

.case-study__back {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  margin-bottom: 32px;
}

.case-study__back:hover {
  color: var(--color-foreground);
}

.case-study__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 24px;
}

.case-study__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding: 20px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 48px;
}

.case-study__meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.case-study__meta-label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.case-study__meta-value {
  font-size: 14px;
  font-weight: 600;
}

.case-study__section {
  margin-bottom: 48px;
}

.case-study__section-heading {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.case-study__section-body {
  font-size: 17px;
  line-height: 1.7;
}

.case-study__quote {
  background: var(--color-accent-soft);
  border-radius: var(--radius-lg);
  padding: 28px;
  font-size: 19px;
  font-weight: 500;
  line-height: 1.5;
  margin: 32px 0;
}

.case-study__steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.case-study__step {
  display: flex;
  gap: 16px;
}

.case-study__step-number {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-study__step-text {
  font-size: 15px;
  line-height: 1.6;
  padding-top: 3px;
}

.case-study__metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.case-study__metric {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}

.case-study__metric-value {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.case-study__metric-label {
  font-size: 13px;
  color: var(--color-muted);
  margin-top: 4px;
}

/* Responsive */

@media (max-width: 720px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--color-body-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 4px 24px 12px;
  }

  .nav--open .nav__links {
    display: flex;
  }

  .nav__links a {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav__links a:last-child {
    border-bottom: none;
  }

  .project-card--featured {
    grid-template-columns: 1fr;
  }

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

  .case-study__metrics {
    grid-template-columns: 1fr;
  }

  .access-gate {
    padding: 32px 24px;
  }

  .access-gate__form {
    flex-direction: column;
  }
}