/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  border: none;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast), opacity var(--transition-fast);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-glow-primary);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-surface);
  border-color: var(--color-text-muted);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  padding-inline: 0;
}

.btn-ghost:hover:not(:disabled) {
  color: var(--color-primary-hover);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
}

/* ============================================================
   Cards
   ============================================================ */

.card {
  background-color: var(--color-surface);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.card-raised {
  background-color: var(--color-surface-raised);
}

/* ============================================================
   Badges
   ============================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.badge-primary {
  background-color: rgba(var(--color-primary-rgb), 0.15);
  color: var(--color-primary);
}

.badge-secondary {
  background-color: rgba(var(--color-secondary-rgb), 0.15);
  color: var(--color-secondary);
}

.badge-muted {
  background-color: var(--color-surface-raised);
  color: var(--color-text-muted);
}

/* ============================================================
   Navigation
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background-color: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: var(--border-subtle);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

:root[data-theme='light'] .nav {
  background-color: rgba(255, 255, 255, 0.88);
}

.nav-logo-icon {
  width: 38px;
  height: 32px;
  flex: 0 0 38px;
  object-fit: contain;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav-links a {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a[aria-current='page'] {
  color: var(--color-text);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: var(--border-subtle);
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  box-shadow: inset 0 0 0 1px rgba(var(--color-primary-rgb), 0.04);
}

.theme-toggle-option {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  background-color: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.theme-toggle-option svg {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
}

.theme-toggle-option:hover {
  color: var(--color-text);
}

.theme-toggle-option[aria-pressed='true'] {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-contrast);
  box-shadow: var(--shadow-glow-primary);
}

.theme-toggle-option:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.nav-portal-btn {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  border: var(--border-subtle);
  color: var(--color-text-muted);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav-portal-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger[aria-expanded='true'] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger[aria-expanded='true'] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded='true'] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  border-bottom: var(--border-subtle);
  padding: var(--space-4) var(--container-padding);
  z-index: 99;
}

.nav-mobile-theme {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-top: var(--space-1);
}

.nav-mobile.open {
  display: block;
}

.nav-mobile ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.nav-mobile a {
  font-size: 1rem;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .nav-links,
  .nav-right {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav-portal-btn {
    display: none;
  }
}

/* ============================================================
   Footer
   ============================================================ */

.footer {
  background-color: var(--color-surface);
  border-top: var(--border-subtle);
  padding-block: var(--space-12);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-8);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.footer-brand p {
  margin-top: var(--space-3);
  font-size: 0.875rem;
  max-width: 36ch;
}

.footer-col h4 {
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col a {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
}

/* ============================================================
   Page offset for fixed nav
   ============================================================ */

main {
  padding-top: 64px;
}

/* ============================================================
   Bento Grid (Services)
   ============================================================ */

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  background-color: var(--color-surface);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.service-card:hover {
  box-shadow: var(--shadow-glow-primary);
  border-color: var(--color-primary);
}

.service-card-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
}

.service-card-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.service-card-desc {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  flex: 1;
}

.service-card-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-card-features li {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
}

.service-card-features li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   Blog cards
   ============================================================ */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.blog-card {
  background-color: var(--color-surface);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color var(--transition-base);
}

.blog-card:hover {
  border-color: var(--color-text-muted);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.blog-card-title {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.4;
}

.blog-card-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  flex: 1;
}

.blog-tag {
  display: inline-flex;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-family: var(--font-mono);
  background-color: rgba(var(--color-secondary-rgb), 0.12);
  color: var(--color-secondary);
  font-weight: 600;
}

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.reading-time {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

.post-cta {
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  background-color: rgba(var(--color-primary-rgb), 0.05);
}

.post-cta-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.post-cta p {
  margin-bottom: var(--space-4);
}

.blog-empty {
  text-align: center;
  padding-block: var(--space-16);
  color: var(--color-text-muted);
}

.blog-empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.4;
}

@media (max-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}