/* ============================================================
   SAES Consulting — Design System
   ============================================================ */

:root {
  --radius: 0.5rem;
  --background: oklch(1 0 0);
  --foreground: oklch(0.16 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.16 0 0);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.16 0 0);
  --primary: oklch(0.16 0 0);
  --primary-foreground: oklch(1 0 0);
  --secondary: oklch(0.96 0 0);
  --secondary-foreground: oklch(0.16 0 0);
  --muted: oklch(0.95 0 0);
  --muted-foreground: oklch(0.42 0 0);
  --accent: oklch(0.48 0.18 25);
  --accent-foreground: oklch(1 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --destructive-foreground: oklch(0.984 0.003 247.858);
  --border: oklch(0.9 0 0);
  --input: oklch(0.9 0 0);
  --ring: oklch(0.48 0.18 25);
  --brand-red: oklch(0.48 0.18 25);
  --gradient-hero: linear-gradient(135deg, oklch(0.12 0 0) 0%, oklch(0.20 0 0) 55%, oklch(0.32 0.10 25) 100%);
  --gradient-accent: linear-gradient(135deg, oklch(0.55 0.20 25), oklch(0.42 0.17 25));
  --shadow-elegant: 0 20px 60px -20px color-mix(in oklab, oklch(0.16 0 0) 40%, transparent);
  --shadow-soft: 0 8px 30px -10px color-mix(in oklab, oklch(0.16 0 0) 18%, transparent);
  --font-display: "Fraunces", Georgia, serif;
  --font-sans: "Inter", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; border-color: var(--border); }

body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
}

h1, h2, h3, .font-display {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  font-weight: 500;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ── Utilities ─────────────────────────────────────────────── */
.bg-hero           { background-image: var(--gradient-hero); }
.bg-accent-gradient{ background-image: var(--gradient-accent); }
.shadow-elegant    { box-shadow: var(--shadow-elegant); }
.shadow-soft       { box-shadow: var(--shadow-soft); }
.container-page    { max-width: 1200px; margin-inline: auto; padding-inline: 1.5rem; }

/* ── Reusable components ────────────────────────────────────── */
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border-radius: 9999px;
  background-image: var(--gradient-accent);
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  color: var(--accent-foreground);
  box-shadow: var(--shadow-elegant);
  transition: transform 0.2s;
  border: none; cursor: pointer;
}
.btn-primary:hover { transform: translateY(-2px); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border-radius: 9999px;
  border: 1px solid rgba(255,255,255,0.3);
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  background: transparent;
  cursor: pointer; transition: background 0.2s;
}
.btn-outline:hover { background: rgba(255,255,255,0.1); }

.btn-dark {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border-radius: 9999px;
  background: var(--foreground);
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem; font-weight: 500;
  color: var(--background);
  transition: opacity 0.2s; cursor: pointer; border: none;
}
.btn-dark:hover { opacity: 0.88; }

.section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.card {
  border-radius: calc(var(--radius) + 8px);
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.5rem;
  box-shadow: var(--shadow-soft);
}

/* ── Header ─────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid color-mix(in oklab, var(--border) 60%, transparent);
  background: color-mix(in oklab, var(--background) 80%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.site-header .inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 4rem;
}
.site-header .logo img { height: 2.5rem; width: auto; }

.site-nav { display: flex; align-items: center; gap: 0.25rem; }
.site-nav a {
  border-radius: 0.375rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
  transition: background 0.15s, color 0.15s;
}
.site-nav a:hover, .site-nav a.active {
  background: var(--secondary);
  color: var(--foreground);
}

.mobile-menu-btn { display: none; background: none; border: none; cursor: pointer; padding: 0.25rem; }
.mobile-nav { display: none; border-top: 1px solid var(--border); background: var(--background); }
.mobile-nav.open { display: block; }
.mobile-nav nav { display: flex; flex-direction: column; padding: 0.5rem 0; }
.mobile-nav nav a { padding: 0.75rem 1.5rem; font-size: 0.875rem; color: var(--foreground); }

@media (max-width: 767px) {
  .site-nav, .header-cta { display: none !important; }
  .mobile-menu-btn { display: block; }
}

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer { margin-top: 6rem; background: var(--primary); color: var(--primary-foreground); }
.site-footer .grid {
  display: grid; gap: 2.5rem;
  padding: 4rem 0;
  grid-template-columns: 1fr;
}
.footer-logo-wrap {
  display: inline-flex; align-items: center;
  border-radius: 0.5rem;
  background: var(--primary-foreground);
  padding: 0.75rem;
}
.footer-logo-wrap img { height: 3rem; width: auto; }
.footer-desc { margin-top: 1rem; font-size: 0.875rem; color: color-mix(in oklab, var(--primary-foreground) 70%, transparent); max-width: 28rem; }
.footer-col h4 { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: color-mix(in oklab, var(--primary-foreground) 60%, transparent); }
.footer-col ul { margin-top: 1rem; display: flex; flex-direction: column; gap: 0.5rem; font-size: 0.875rem; }
.footer-col ul a:hover { color: var(--accent); }
.footer-col .contact-item { display: flex; align-items: center; gap: 0.5rem; font-size: 0.875rem; color: color-mix(in oklab, var(--primary-foreground) 80%, transparent); }
.footer-bottom { border-top: 1px solid color-mix(in oklab, var(--primary-foreground) 10%, transparent); }
.footer-bottom .inner { display: flex; flex-direction: column; gap: 0.5rem; padding: 1.5rem 0; font-size: 0.75rem; color: color-mix(in oklab, var(--primary-foreground) 50%, transparent); }

@media (min-width: 768px) {
  .site-footer .grid { grid-template-columns: 1fr 1fr 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
  .footer-bottom .inner { flex-direction: row; justify-content: space-between; }
}