/* ==========================================================================
   GTF Solutions — Site Styles
   ========================================================================== */

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

:root {
  --navy: #0f1b2d;
  --navy-light: #162238;
  --blue: #2563eb;
  --blue-light: #3b82f6;
  --sky: #dbeafe;
  --gold: #f59e0b;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --white: #ffffff;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--gray-800);
  line-height: 1.6;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-light); }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Navigation ---------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 27, 45, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

.nav-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav-brand span { color: var(--blue-light); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--gray-400);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--blue);
  color: var(--white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-weight: 600;
  transition: background 0.2s;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* --- Hero ---------------------------------------------------------------- */
.hero {
  padding: 10rem 0 6rem;
  background: linear-gradient(170deg, var(--navy) 0%, var(--navy-light) 60%, #1e3a5f 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(37, 99, 235, 0.25);
  padding: 0.375rem 1rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue-light);
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--blue-light), #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.125rem;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--gray-500);
}

.btn-outline:hover {
  border-color: var(--white);
  color: var(--white);
}

/* --- Section base -------------------------------------------------------- */
section {
  padding: 5rem 0;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--gray-900);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--gray-600);
  max-width: 640px;
  line-height: 1.7;
}

/* --- Services ------------------------------------------------------------ */
.services { background: var(--gray-50); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.service-card:hover {
  border-color: var(--blue-light);
  box-shadow: 0 4px 24px rgba(37, 99, 235, 0.08);
}

.service-icon {
  width: 48px;
  height: 48px;
  background: var(--sky);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.service-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--gray-900);
}

.service-card p {
  font-size: 0.925rem;
  color: var(--gray-600);
  line-height: 1.65;
}

/* --- Differentiators ----------------------------------------------------- */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.diff-item {
  text-align: center;
}

.diff-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: -0.03em;
}

.diff-item h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0.25rem 0;
  color: var(--gray-900);
}

.diff-item p {
  font-size: 0.85rem;
  color: var(--gray-500);
}

/* --- Team ---------------------------------------------------------------- */
.team { background: var(--gray-50); }

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.team-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  overflow: hidden;
}

.team-header {
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  padding: 2.5rem 2rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.team-photo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.15);
  object-fit: cover;
  flex-shrink: 0;
}

.team-photo-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 3px solid rgba(255, 255, 255, 0.15);
  background: rgba(37, 99, 235, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--blue-light);
  flex-shrink: 0;
}

.team-intro h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
}

.team-intro .title {
  font-size: 0.85rem;
  color: var(--blue-light);
  font-weight: 600;
  margin-top: 0.15rem;
}

.team-body {
  padding: 1.5rem 2rem 2rem;
}

.team-body p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.team-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.team-tag {
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--sky);
  color: var(--blue);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
}

.team-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.team-links a {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--blue);
}

.team-links a:hover { text-decoration: underline; }

/* --- CTA ----------------------------------------------------------------- */
.cta {
  background: linear-gradient(170deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  text-align: center;
}

.cta .section-title { color: var(--white); }

.cta .section-desc {
  color: var(--gray-400);
  margin: 0 auto 2rem;
}

.cta .btn-primary { font-size: 1rem; padding: 0.875rem 2rem; }

.cta-email {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--gray-400);
}

.cta-email a { color: var(--blue-light); }
.cta-email a:hover { text-decoration: underline; }

/* --- Footer -------------------------------------------------------------- */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 2.5rem 0;
  text-align: center;
  font-size: 0.85rem;
}

.footer a { color: var(--gray-400); }
.footer a:hover { color: var(--white); }

/* --- Responsive ---------------------------------------------------------- */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--navy);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
  }
  .nav-toggle { display: block; }
  .hero { padding: 8rem 0 4rem; }
  .team-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .diff-grid { grid-template-columns: repeat(2, 1fr); }
}