/* Synegie public website – clean, minimal, scroll animations */

:root {
  --color-bg: #0d0d0f;
  --color-surface: #16161a;
  --color-text: #e4e4e7;
  --color-text-muted: #a1a1aa;
  --color-accent: #7c9cbf;
  --color-accent-hover: #9ab4d4;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --radius: 0.5rem;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) var(--space-lg);
  background: rgba(13, 13, 15, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.nav {
  display: flex;
  gap: var(--space-lg);
}

.nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

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

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl) var(--space-lg);
  padding-top: calc(80px + var(--space-3xl));
}

.hero-inner {
  max-width: 720px;
  text-align: center;
}

.hero-title {
  margin: 0 0 var(--space-md);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.hero-lead {
  margin: 0 0 var(--space-xl);
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.cta {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition), transform 0.2s ease;
}

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

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

/* Sections */
.section {
  padding: var(--space-3xl) var(--space-lg);
}

.container {
  max-width: 1000px;
  margin: 0 auto;
}

.section-title {
  margin: 0 0 var(--space-2xl);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
  color: var(--color-text);
}

/* Feature grid */
.what-we-do {
  background: var(--color-surface);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  padding: var(--space-xl);
  background: var(--color-bg);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: border-color var(--transition), transform 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(124, 156, 191, 0.25);
  transform: translateY(-2px);
}

.feature-icon {
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
  color: var(--color-accent);
}

.feature-card h3 {
  margin: 0 0 var(--space-sm);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
}

.feature-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* Benefits list */
.benefits-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 600px;
  margin: 0 auto;
}

.benefit-item {
  padding: var(--space-md) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

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

.benefit-item strong {
  color: var(--color-text);
  font-weight: 600;
}

/* CTA section */
.cta-section {
  background: var(--color-surface);
  text-align: center;
}

.cta-section-lead {
  margin: 0 0 var(--space-xl);
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

/* Footer */
.site-footer {
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-brand {
  font-weight: 600;
  color: var(--color-text-muted);
}

.footer-inner a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

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

/* Scroll reveal – base state (before in view) */
.scroll-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grid items */
.feature-card.scroll-reveal:nth-child(1) { transition-delay: 0s; }
.feature-card.scroll-reveal:nth-child(2) { transition-delay: 0.1s; }
.feature-card.scroll-reveal:nth-child(3) { transition-delay: 0.2s; }

.benefit-item.scroll-reveal:nth-child(1) { transition-delay: 0s; }
.benefit-item.scroll-reveal:nth-child(2) { transition-delay: 0.05s; }
.benefit-item.scroll-reveal:nth-child(3) { transition-delay: 0.1s; }
.benefit-item.scroll-reveal:nth-child(4) { transition-delay: 0.15s; }
.benefit-item.scroll-reveal:nth-child(5) { transition-delay: 0.2s; }

/* Responsive */
@media (max-width: 640px) {
  .hero {
    padding-top: calc(70px + var(--space-2xl));
  }

  .section {
    padding: var(--space-2xl) var(--space-md);
  }

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