/* ============================================
   KOSMOS STUDIOS – Global Styles
   Clean • Professional • Accessible
   ============================================ */

:root {
  /* Colors */
  --bg: #0d0d0d;
  --surface: #161616;
  --surface-2: #1e1e1e;
  --border: #2a2a2a;
  --text: #e8e8e8;
  --text-muted: #a0a0a0;
  --accent: #5b9bd5;
  --accent-hover: #7ab3e0;

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Spacing & Radius */
  --radius: 10px;
  --radius-lg: 16px;
  --container: 1140px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

ul {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); }
h3 { font-size: 1.25rem; }

p {
  color: var(--text-muted);
  max-width: 62ch;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-header {
  margin-bottom: 48px;
  max-width: 640px;
}

.section-header p {
  margin-top: 12px;
}

/* ========== HEADER / NAV ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.logo img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

.nav-cta {
  background: var(--accent);
  color: #0d0d0d !important;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.9rem;
  transition: background 0.2s ease;
}

.nav-cta:hover {
  background: var(--accent-hover);
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #0d0d0d;
}

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

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--text-muted);
  background: var(--surface);
}

/* ========== HERO ========== */
.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(91, 155, 213, 0.12);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero h1 {
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.15rem;
  margin: 0 auto 36px;
}

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

/* ========== CARDS / GRID ========== */
.grid {
  display: grid;
  gap: 24px;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: #3a3a3a;
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: rgba(91, 155, 213, 0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--accent);
  font-size: 1.4rem;
}

.card h3 {
  margin-bottom: 10px;
}

/* ========== FOOTER ========== */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  background: var(--surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  margin-top: 12px;
  font-size: 0.95rem;
}

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ========== PAGE-SPECIFIC ========== */
.page-hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  margin-bottom: 12px;
}

/* Contact form */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

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

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 24px;
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .hero {
    padding: 64px 0 48px;
  }
}