/* ?? Site Navigation ?? */

.site-header {
  position: relative;
  z-index: 10;
  width: 100%;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border-subtle);
}

.nav-island {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding: 1.25rem var(--space-sm);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

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

.nav-links-desktop {
  display: none;
  align-items: center;
  gap: 0.5rem;
}

@media (min-width: 1024px) {
  .nav-links-desktop {
    display: flex;
  }
}

.nav-link {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-pill);
  transition: color var(--duration-fast) var(--ease-fluid),
              background var(--duration-fast) var(--ease-fluid);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(255, 255, 255, 0.06);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  position: relative;
}

@media (min-width: 1024px) {
  .nav-hamburger {
    display: none;
  }
}

.nav-hamburger-line {
  display: block;
  width: 1.125rem;
  height: 1.5px;
  background: var(--color-text);
  border-radius: 1px;
  position: absolute;
  transition: transform var(--duration-normal) var(--ease-fluid),
              opacity var(--duration-fast) var(--ease-fluid);
}

.nav-hamburger-line:nth-child(1) { transform: translateY(-4px); }
.nav-hamburger-line:nth-child(2) { transform: translateY(4px); }

.nav-hamburger.is-open .nav-hamburger-line:nth-child(1) {
  transform: rotate(45deg);
}

.nav-hamburger.is-open .nav-hamburger-line:nth-child(2) {
  transform: rotate(-45deg);
}

.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 99;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-md);
  background: rgba(5, 5, 5, 0.92);
  backdrop-filter: blur(40px);
  -webkit-backdrop-filter: blur(40px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-slow) var(--ease-fluid),
              visibility var(--duration-slow) var(--ease-fluid);
}

.nav-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.nav-overlay-link {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 600;
  color: var(--color-text-muted);
  opacity: 0;
  transform: translateY(3rem);
  transition: color var(--duration-fast) var(--ease-fluid),
              opacity var(--duration-slow) var(--ease-fluid),
              transform var(--duration-slow) var(--ease-fluid);
}

.nav-overlay.is-open .nav-overlay-link {
  opacity: 1;
  transform: translateY(0);
}

.nav-overlay.is-open .nav-overlay-link:nth-child(1) { transition-delay: 100ms; }
.nav-overlay.is-open .nav-overlay-link:nth-child(2) { transition-delay: 150ms; }
.nav-overlay.is-open .nav-overlay-link:nth-child(3) { transition-delay: 200ms; }
.nav-overlay.is-open .nav-overlay-link:nth-child(4) { transition-delay: 250ms; }
.nav-overlay.is-open .nav-overlay-link:nth-child(5) { transition-delay: 300ms; }
.nav-overlay.is-open .nav-overlay-link:nth-child(6) { transition-delay: 350ms; }

.nav-overlay-link:hover {
  color: var(--color-text);
}

/* ?? Buttons ?? */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-bg);
  background: var(--color-text);
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-fluid),
              background var(--duration-fast) var(--ease-fluid);
}

.btn:active {
  transform: scale(0.98);
}

.btn:hover {
  background: #e5e5e5;
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 50%;
  transition: transform var(--duration-fast) var(--ease-fluid);
}

.btn:hover .btn-icon {
  transform: translate(2px, -1px) scale(1.05);
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text);
}

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

.btn-accent:hover {
  background: #0d9668;
}

/* ?? Double-Bezel Cards ?? */

.bezel {
  padding: 0.375rem;
  background: var(--color-border-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-outer);
}

.bezel-inner {
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-inner);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

.bezel-inner-dark {
  background: var(--color-surface-inner);
}

/* ?? Bento Grid ?? */

.bento {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .bento {
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-md);
  }

  .bento-span-8 { grid-column: span 8; }
  .bento-span-4 { grid-column: span 4; }
  .bento-span-6 { grid-column: span 6; }
  .bento-row-2 { grid-row: span 2; }
}

/* ?? Hero ?? */

.hero {
  position: relative;
  z-index: 1;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding-top: var(--space-xl);
  padding-bottom: var(--space-2xl);
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  align-items: center;
}

@media (min-width: 768px) {
  .hero-split {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

.hero-visual {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-outer);
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, transparent 50%),
    linear-gradient(225deg, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    var(--color-surface);
}

.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--color-bg) 0%, transparent 40%);
}

.hero-visual-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

/* ?? Feature List ?? */

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding-block: 0.5rem;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.feature-list li::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 0.55em;
  background: var(--color-accent);
  border-radius: 50%;
}

/* ?? Promo Banner ?? */

.promo-banner {
  position: relative;
  z-index: 1;
  padding-block: var(--space-xl);
}

.promo-banner .bezel-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: flex-start;
}

@media (min-width: 768px) {
  .promo-banner .bezel-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ?? Newsletter ?? */

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 40rem;
}

@media (min-width: 480px) {
  .newsletter-form {
    flex-direction: row;
  }
}

.newsletter-input {
  flex: 1;
  padding: 0.875rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text);
  background: var(--color-surface-inner);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-fluid);
}

.newsletter-input:focus {
  border-color: var(--color-accent);
}

.newsletter-input::placeholder {
  color: var(--color-text-dim);
}

/* ?? Footer ?? */

.site-footer {
  position: relative;
  z-index: 1;
  padding-block: var(--space-2xl) var(--space-lg);
  border-top: 1px solid var(--color-border-subtle);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr repeat(3, 1fr);
  }
}

.footer-brand p {
  margin-top: var(--space-sm);
  font-size: 0.875rem;
  max-width: 20rem;
}

.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: var(--space-sm);
}

.footer-col a {
  display: block;
  padding-block: 0.35rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-fluid);
}

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

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.8125rem;
  color: var(--color-text-dim);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-fluid);
}

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

/* ?? Page Header ?? */

.page-header {
  position: relative;
  z-index: 1;
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.page-header h1 {
  max-width: 20ch;
}

.page-header p {
  margin-top: var(--space-md);
  font-size: 1.125rem;
  max-width: 56ch;
}

/* ?? Product Cards ?? */

.product-card .bezel-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.product-card-visual {
  aspect-ratio: 16 / 10;
  margin: calc(var(--space-lg) * -1);
  margin-bottom: var(--space-md);
  border-radius: var(--radius-inner) var(--radius-inner) 0 0;
  background:
    linear-gradient(160deg, rgba(16, 185, 129, 0.12), transparent),
    var(--color-surface-inner);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.product-card h3 {
  margin-bottom: 0.5rem;
}

.product-card p {
  font-size: 0.875rem;
  flex: 1;
}

.product-card .btn {
  margin-top: var(--space-md);
  align-self: flex-start;
}

/* ?? Tier Cards ?? */

.tier-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .tier-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tier-card .bezel-inner {
  height: 100%;
}

.tier-label {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.tier-price {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin: var(--space-sm) 0;
}

/* ?? Gallery Grid ?? */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
  }
}

.gallery-item {
  aspect-ratio: 1;
  border-radius: var(--radius-inner);
  background:
    linear-gradient(135deg, rgba(16, 185, 129, 0.08), transparent),
    var(--color-surface-inner);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

/* ?? Spec Table ?? */

.spec-table {
  width: 100%;
  border-collapse: collapse;
}

.spec-table th,
.spec-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--color-border-subtle);
}

.spec-table th {
  font-weight: 600;
  color: var(--color-text-dim);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.spec-table td {
  color: var(--color-text-muted);
}

/* ?? Contact Form ?? */

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text);
  background: var(--color-surface-inner);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-fluid);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-accent);
}

.form-textarea {
  min-height: 8rem;
  resize: vertical;
}