/* ============================================
   Components
   ============================================ */

/* ── Typography ── */
h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(2rem, 5vw, 3rem); }
h3 { font-size: clamp(1.5rem, 4vw, 2rem); }
h4 { font-size: 1.25rem; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  line-height: 1;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: white;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn:hover::after { opacity: 0.08; }

.btn--primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}
.btn--primary:hover {
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
  transform: translateY(-2px);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.05);
  color: white;
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}
.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* ── Navigation ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(5, 10, 21, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.05em;
  color: white;
}

.nav-brand-icon {
  color: var(--color-primary);
  display: flex;
}

.nav-links {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: white;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: white;
  padding: 0.5rem;
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-6);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .mobile-menu-btn { display: block; }
  
  .nav-cta { display: none; }
}

/* ── Cards (Glassmorphism) ── */
.glass-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: radial-gradient(circle at top left, var(--color-border-hover), transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-lg);
}

.glass-card:hover::before { opacity: 1; }

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.card-icon svg { width: 24px; height: 24px; }

/* ── Footer ── */
.footer {
  background: #03060C;
  border-top: 1px solid var(--color-border);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.footer-brand { margin-bottom: var(--space-4); display: inline-block; }

.footer-heading {
  color: white;
  font-size: 0.9375rem;
  margin-bottom: var(--space-6);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover { color: var(--color-primary-light); }

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-10); }
  .footer-bottom { flex-direction: column; gap: var(--space-4); text-align: center; }
}

/* ── Contact Form ── */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
}

.form-control {
  width: 100%;
  background: rgba(15, 25, 41, 0.6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: white;
  transition: all var(--transition-base);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(15, 25, 41, 0.9);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* ── Hero Gradient Background ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: -1;
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(37, 99, 235, 0.15), transparent 50%),
    radial-gradient(circle at 85% 30%, rgba(6, 182, 212, 0.1), transparent 50%);
}

.hero-grid {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: -1;
  background-size: 40px 40px;
  background-image: linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
}

/* ── CTA Banner ── */
.cta-banner {
  background: linear-gradient(135deg, var(--color-surface) 0%, rgba(37, 99, 235, 0.1) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-16);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 60%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

@media (max-width: 768px) {
  .cta-banner { padding: var(--space-8) var(--space-4); }
}