/* ═══════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: var(--space-lg) 0;
  transition: background var(--duration-normal) var(--ease-spring),
              padding var(--duration-normal) var(--ease-spring),
              backdrop-filter var(--duration-normal) var(--ease-spring);
}

.nav.is-scrolled {
  background: rgba(26, 18, 16, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: var(--space-md) 0;
}

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

.nav__brand {
  font-family: var(--font-display);
  font-size: var(--fs-h4);
  font-weight: var(--fw-normal);
  color: var(--color-text-primary);
  letter-spacing: var(--ls-tight);
}

.nav__links {
  display: none;
  gap: var(--space-xl);
  align-items: center;
}

.nav__link {
  font-family: var(--font-body);
  font-size: var(--fs-caption);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-text-secondary);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--duration-normal) var(--ease-spring);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--color-text-primary);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  width: 100%;
}

/* Hamburger */
.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-sm);
  z-index: calc(var(--z-nav) + 1);
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-text-primary);
  transition: transform var(--duration-normal) var(--ease-spring),
              opacity var(--duration-fast) var(--ease-spring);
  transform-origin: center;
}

.nav__toggle.open span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.open span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* Mobile menu — full screen overlay */
.nav__mobile {
  position: fixed;
  inset: 0;
  background: var(--color-canvas);
  z-index: var(--z-nav);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-2xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-spring);
}

.nav__mobile.open {
  opacity: 1;
  pointer-events: all;
}

.nav__mobile a {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  color: var(--color-text-secondary);
  transition: color var(--duration-fast) var(--ease-spring);
}

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

@media (min-width: 768px) {
  .nav__links {
    display: flex;
  }
  .nav__toggle {
    display: none;
  }
}

/* ═══════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-sm);
  transition: all var(--duration-normal) var(--ease-spring);
  cursor: pointer;
  will-change: transform;
}

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

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: none;
}

/* Hero CTA pulse */
.btn--pulse {
  animation: cta-pulse 3s ease-in-out infinite;
}

@keyframes cta-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(196, 113, 74, 0.15); }
  50% { box-shadow: 0 0 0 12px rgba(196, 113, 74, 0.0); }
}

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

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

.btn--ghost {
  color: var(--color-text-secondary);
  padding: var(--space-sm) 0;
  letter-spacing: var(--ls-wide);
  font-size: var(--fs-small);
}

.btn--ghost::after {
  content: '\2192';
  display: inline-block;
  transition: transform var(--duration-fast) var(--ease-spring);
}

.btn--ghost:hover {
  color: var(--color-accent);
}

.btn--ghost:hover::after {
  transform: translateX(4px);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Full-width on mobile */
@media (max-width: 480px) {
  .btn--primary,
  .btn--outline {
    width: 100%;
    justify-content: center;
  }
}

/* ═══════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════ */
.card {
  background: var(--color-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: transform var(--duration-normal) var(--ease-spring),
              border-color var(--duration-normal) var(--ease-spring),
              box-shadow var(--duration-normal) var(--ease-spring);
  will-change: transform;
}

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

.card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-lg);
  color: var(--color-accent);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--fs-h4);
  margin-bottom: var(--space-md);
}

.card__text {
  color: var(--color-text-secondary);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
}

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-3xl);
  background: var(--color-surface);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  align-items: center;
  text-align: center;
}

.footer__brand {
  font-family: var(--font-display);
  font-size: var(--fs-h4);
  font-weight: var(--fw-normal);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
}

.footer__link {
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-spring);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__copy {
  font-size: var(--fs-caption);
  color: var(--color-text-muted);
}

@media (min-width: 768px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ═══════════════════════════════════════════
   SECTION HEADER
   ═══════════════════════════════════════════ */
.section-header {
  max-width: var(--max-width-narrow);
  margin-bottom: var(--space-3xl);
}

.section-header .overline {
  margin-bottom: var(--space-md);
  display: block;
}

.section-header h2 {
  margin-bottom: var(--space-lg);
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: var(--fs-body-lg);
  line-height: var(--lh-normal);
}

.section-header--center {
  text-align: center;
  margin-inline: auto;
}