/* YNDY.AI - Refined Design System */
/* Playfair Display serif + warm neutral palette */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400;1,500&family=Inter:wght@300;400;500;600&display=swap');

/* ── Reset & Base ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-bg: #F5F0EB;
  --color-bg-alt: #EDE8E1;
  --color-bg-dark: #D4CFC7;
  --color-surface: #FFFFFF;
  --color-text: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-text-muted: #7A7A7A;
  --color-accent: #1A1A1A;
  --color-accent-hover: #333333;
  --color-border: #D4CFC7;
  --color-footer-bg: #E8E3DB;

  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;

  --max-width: 1200px;
  --transition: 0.2s ease;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.lead {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* ── Layout ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

section {
  padding: var(--space-5xl) 0;
}

/* ── Header / Nav ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-text);
  transition: width var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: var(--transition);
}

/* ── Hero ── */
.hero {
  padding: var(--space-5xl) 0;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.hero-content h1 {
  margin-bottom: var(--space-lg);
}

.hero-content p {
  margin-bottom: var(--space-2xl);
  max-width: 480px;
}

.hero-visual {
  position: relative;
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  border-radius: 8px;
  overflow: hidden;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  border-radius: 4px;
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-text);
}

.btn-outline:hover {
  background: var(--color-text);
  color: var(--color-surface);
}

/* ── Section Headers ── */
.section-header {
  max-width: 640px;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  font-size: 1.125rem;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  display: block;
}

/* ── Cards Grid ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.card {
  padding: var(--space-2xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}

.card h3 {
  margin-bottom: var(--space-md);
}

.card p {
  font-size: 0.9375rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

/* ── Values Grid ── */
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  text-align: center;
}

.value-item h3 {
  margin-bottom: var(--space-md);
  font-size: 1.75rem;
}

.value-item p {
  max-width: 320px;
  margin: 0 auto;
}

/* ── Two Column Layout ── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.two-col-text h2 {
  margin-bottom: var(--space-lg);
}

.two-col-text p {
  margin-bottom: var(--space-md);
}

.two-col-visual {
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  border-radius: 8px;
  overflow: hidden;
}

.two-col-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Services List ── */
.service-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: start;
}

.service-item:first-child {
  padding-top: 0;
}

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

.service-number {
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  display: block;
}

.service-item h3 {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.service-detail ul {
  list-style: none;
  padding: 0;
}

.service-detail li {
  padding: var(--space-sm) 0;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}

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

/* ── Contact Form ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
}

.contact-info h3 {
  margin-bottom: var(--space-lg);
  font-size: 1.5rem;
}

.contact-info p {
  margin-bottom: var(--space-xl);
}

.contact-detail {
  margin-bottom: var(--space-xl);
}

.contact-detail h4 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.contact-detail p {
  color: var(--color-text);
}

.contact-form label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-surface);
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  outline: none;
  border-color: var(--color-text);
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

/* ── Clients / Logos ── */
.logo-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3xl);
  padding: var(--space-3xl) 0;
  flex-wrap: wrap;
}

.logo-strip span {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ── CTA Banner ── */
.cta-banner {
  background: var(--color-accent);
  color: var(--color-surface);
  text-align: center;
  padding: var(--space-4xl) 0;
}

.cta-banner h2 {
  color: var(--color-surface);
  margin-bottom: var(--space-md);
}

.cta-banner p {
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-xl);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.cta-banner .btn-outline {
  border-color: var(--color-surface);
  color: var(--color-surface);
}

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

/* ── Footer ── */
.site-footer {
  background: var(--color-footer-bg);
  padding: var(--space-3xl) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
}

.footer-brand .logo {
  margin-bottom: var(--space-md);
  display: block;
}

.footer-brand p {
  font-size: 0.875rem;
  max-width: 300px;
}

.footer-col h4 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: var(--space-sm);
}

.footer-col a {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

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

.footer-bottom {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ── Alternating bg ── */
.bg-white { background: var(--color-surface); }
.bg-alt { background: var(--color-bg-alt); }
.bg-dark {
  background: var(--color-accent);
  color: var(--color-surface);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero .container,
  .two-col,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .card-grid,
  .values-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .service-item {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .hero {
    min-height: auto;
    padding: var(--space-3xl) 0;
  }

  section {
    padding: var(--space-3xl) 0;
  }

  .hero-visual {
    order: -1;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-md);
  }

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

  .nav-toggle {
    display: block;
  }

  .container {
    padding: 0 var(--space-md);
  }
}

/* ── Utilities ── */
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }