/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: all var(--t-base) var(--ease);
}

.navbar.scrolled {
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

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

.nav-logo {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--text-heading);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo .brand-mark {
  height: 34px;
  width: auto;
  display: block;
}

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

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--t-fast);
  position: relative;
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--t-fast);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 70%;
    height: 100vh;
    flex-direction: column;
    background: var(--bg-secondary);
    padding: 5rem 2rem 2rem;
    gap: 1.5rem;
    transition: right var(--t-base) var(--ease);
    border-left: 1px solid var(--border);
  }
  .nav-links.open { right: 0; }
  .nav-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
  }
  .nav-overlay.open { display: block; }
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--r-sm);
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: all var(--t-fast) var(--ease);
  white-space: nowrap;
}

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

.btn-primary:hover {
  color: var(--bg-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1px solid var(--border-accent);
  color: var(--accent);
}

.btn-outline:hover {
  background: var(--accent-dim);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 2rem;
  transition: all var(--t-base) var(--ease);
}

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

.card-icon {
  width: 48px; height: 48px;
  border-radius: var(--r-sm);
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--accent);
}

.card h3 { margin-bottom: 0.75rem; }

/* ── Tags / Pills ── */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Footer ── */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: var(--fs-sm);
}

.footer-col h4 {
  font-size: var(--fs-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.footer-col a {
  display: block;
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  padding: 0.25rem 0;
  transition: color var(--t-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--fs-xs);
  color: var(--text-secondary);
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t-fast);
}

.footer-social a:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
}

/* ── Forms ── */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text-primary);
  font-size: var(--fs-base);
  transition: border-color var(--t-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

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

.form-group .error-msg {
  font-size: var(--fs-xs);
  color: #ef4444;
  margin-top: 0.25rem;
  display: none;
}

.form-group.error input,
.form-group.error textarea {
  border-color: #ef4444;
}

.form-group.error .error-msg { display: block; }