/* Fourier Studio Inc. — site stylesheet */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f8;
  --color-bg-dark: #0e2338;
  --color-text: #1b2733;
  --color-text-muted: #57677a;
  --color-text-invert: #eef2f6;
  --color-primary: #0e2338;
  --color-primary-light: #1c3a57;
  --color-accent: #c08a2e;
  --color-accent-light: #d9a949;
  --color-border: #e1e6ea;
  --radius: 6px;
  --max-width: 1120px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", Times, serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

#what-we-do {
  scroll-margin-top: 76px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
}

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

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

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-primary);
  letter-spacing: 0.01em;
}

.logo .logo-mark {
  color: var(--color-accent);
  font-family: var(--font-serif);
}

.logo:hover {
  color: var(--color-primary);
}

.main-nav > ul {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: inherit;
  color: var(--color-text);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
}

.nav-dropdown-toggle:hover,
.nav-dropdown-toggle.is-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 250px;
  margin: 10px 0 0;
  padding: 8px;
  list-style: none;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 16px 32px rgba(14, 35, 56, 0.14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu li {
  list-style: none;
}

.nav-dropdown-menu a {
  display: block;
  padding: 10px 12px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
  border-bottom: none;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a[aria-current="page"] {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 1.1rem;
  cursor: pointer;
}

/* ---------- Hero ---------- */

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-text-invert);
  padding: 96px 0 88px;
}

.hero-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(192, 138, 46, 0.12);
  margin-bottom: 24px;
}

.hero-icon img {
  width: 30px;
  height: 30px;
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent-light);
  margin-bottom: 16px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  line-height: 1.15;
  margin: 0 0 20px;
  max-width: 18ch;
}

.hero p.lede {
  font-size: 1.15rem;
  color: #c9d4de;
  max-width: 60ch;
  margin: 0 0 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
}

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

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

.btn-outline {
  border-color: rgba(238, 242, 246, 0.5);
  color: var(--color-text-invert);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--color-text-invert);
  color: var(--color-text-invert);
  background: rgba(238, 242, 246, 0.08);
}

/* ---------- Sections ---------- */

section {
  padding: 80px 0;
}

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

.section-heading {
  max-width: 62ch;
  margin: 0 0 48px;
}

.section-heading .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section-heading h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  margin: 0 0 12px;
  color: var(--color-primary);
}

.section-heading p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin: 0;
}

/* ---------- Card grid ---------- */

.grid {
  display: grid;
  gap: 28px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 32px;
}

.card .card-icon {
  font-size: 1.6rem;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.15rem;
  margin: 0 0 10px;
  color: var(--color-primary);
}

.card p {
  color: var(--color-text-muted);
  margin: 0 0 16px;
  font-size: 0.97rem;
}

.card a.card-link {
  font-weight: 700;
  font-size: 0.9rem;
}

/* ---------- Process / steps ---------- */

.steps {
  counter-reset: step;
  display: grid;
  gap: 32px;
  grid-template-columns: repeat(4, 1fr);
}

.step {
  position: relative;
  padding-top: 8px;
}

.step .step-number {
  counter-increment: step;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.step .step-number::before {
  content: counter(step, decimal-leading-zero);
}

.step h3 {
  font-size: 1.05rem;
  margin: 0 0 8px;
  color: var(--color-primary);
}

.step p {
  color: var(--color-text-muted);
  font-size: 0.94rem;
  margin: 0;
}

/* ---------- Stats ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat .stat-number {
  font-family: var(--font-serif);
  font-size: 2.3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat .stat-label {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 6px;
}

/* ---------- Values list ---------- */

.values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.value h3 {
  color: var(--color-primary);
  font-size: 1.05rem;
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.value h3 .value-mark {
  color: var(--color-accent);
}

.value p {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 0.96rem;
}

/* ---------- Team ---------- */

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.team-card {
  text-align: left;
}

.team-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-invert);
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.team-card h3 {
  margin: 0 0 2px;
  color: var(--color-primary);
  font-size: 1.05rem;
}

.team-card .role {
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.team-card p.bio {
  color: var(--color-text-muted);
  font-size: 0.93rem;
  margin: 0;
}

/* ---------- CTA band ---------- */

.cta-band {
  background: var(--color-primary);
  color: var(--color-text-invert);
  text-align: center;
}

.cta-band h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 0 0 14px;
}

.cta-band p {
  color: #c9d4de;
  max-width: 55ch;
  margin: 0 auto 28px;
}

/* ---------- Service detail blocks ---------- */

.service-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
  padding: 64px 0;
  border-bottom: 1px solid var(--color-border);
}

.service-block:last-child {
  border-bottom: none;
}

.service-block .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.service-block h2 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  font-size: 1.7rem;
  margin: 0 0 16px;
}

.service-block p {
  color: var(--color-text-muted);
  margin: 0 0 16px;
}

.service-block ul {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.service-block ul li {
  padding: 10px 0 10px 28px;
  border-top: 1px solid var(--color-border);
  position: relative;
  font-size: 0.95rem;
  color: var(--color-text);
}

.service-block ul li:first-child {
  border-top: none;
}

.service-block ul li::before {
  content: "\2022";
  color: var(--color-accent);
  position: absolute;
  left: 8px;
  font-weight: 700;
}

/* ---------- Contact page ---------- */

.contact-stack {
  max-width: 620px;
  margin: 0 auto;
}

.contact-option h2 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  font-size: 1.4rem;
  margin: 0 0 8px;
}

.contact-option > p {
  color: var(--color-text-muted);
  margin: 0 0 16px;
  font-size: 0.97rem;
}

.email-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
}

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

.email-link .email-text {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.email-link .icon-hint {
  font-size: 1.8rem;
  line-height: 1;
  color: var(--color-accent);
}

/* ---------- Legal pages ---------- */

.legal-content {
  max-width: 76ch;
}

.legal-content h1 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 8px;
}

.legal-content .updated {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  margin: 0 0 40px;
}

.legal-content h2 {
  color: var(--color-primary);
  font-size: 1.2rem;
  margin: 36px 0 12px;
}

.legal-content p,
.legal-content li {
  color: var(--color-text-muted);
  font-size: 0.97rem;
}

.legal-content ul {
  padding-left: 22px;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--color-primary);
  color: #c9d4de;
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(238, 242, 246, 0.12);
}

.footer-brand .logo {
  color: var(--color-text-invert);
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 32ch;
}

.site-footer h4 {
  color: var(--color-text-invert);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 16px;
}

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

.site-footer li {
  margin-bottom: 10px;
  font-size: 0.92rem;
}

.site-footer a {
  color: #c9d4de;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 0.85rem;
  color: #9fb0bf;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    display: none;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav > ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 16px;
  }

  .main-nav > ul > li {
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav a {
    display: block;
    padding: 14px 0;
  }

  .nav-dropdown-toggle {
    width: 100%;
    justify-content: space-between;
    padding: 14px 0;
  }

  .nav-dropdown-menu {
    position: static;
    display: none;
    min-width: 0;
    margin: 0 0 8px;
    padding: 0 0 0 16px;
    border: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-dropdown.open .nav-dropdown-menu {
    display: block;
  }

  .nav-dropdown-menu a {
    padding: 12px 0;
  }

  .nav-toggle {
    display: block;
  }

  .grid-3,
  .grid-2,
  .steps,
  .stats,
  .values,
  .team-grid {
    grid-template-columns: 1fr;
  }

  .service-block {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 64px 0;
  }
}