/* ============================================================
   BuhoSleep — Landing page layout
   ============================================================ */

/* --- Nav --------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 3.25rem;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-base);
  color: var(--text);
  text-decoration: none;
}
.nav__logo:hover { color: var(--text); }
.nav__owl {
  width: 28px;
  height: 28px;
  color: var(--eye-off);
  transition: color 0.4s var(--ease);
}
.nav__owl.signal-off          { color: var(--eye-off); }
.nav__owl.signal-presentation { color: var(--eye-presentation); }
.nav__owl.signal-background   { color: var(--eye-background); }
.nav__owl.signal-powersaver   { color: var(--eye-powersaver); }
.nav__owl.signal-highperf     { color: var(--eye-highperf); }

.nav__links {
  display: none;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}
.nav__links a {
  padding: 0.4rem 0.75rem;
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  border-radius: var(--r-sm);
  transition: all var(--dur) var(--ease);
}
.nav__links a:hover {
  color: var(--text);
  background: var(--accent-subtle);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  border-radius: var(--r-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}
.theme-toggle:hover {
  background: var(--accent-subtle);
  color: var(--text);
}

.nav__mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--r-sm);
}
.nav__mobile-toggle:hover {
  background: var(--accent-subtle);
  color: var(--text);
}

.nav__mobile-menu {
  display: none;
  flex-direction: column;
  padding-bottom: var(--space-md);
}
.nav__mobile-menu.is-open { display: flex; }
.nav__mobile-menu a {
  padding: 0.6rem 0;
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  border-bottom: 1px solid var(--border);
}
.nav__mobile-menu a:last-child { border-bottom: none; }
.nav__mobile-menu a:hover { color: var(--text); }

@media (min-width: 768px) {
  .nav__links { display: flex; }
  .nav__mobile-toggle { display: none; }
  .nav__mobile-menu { display: none !important; }
}

/* --- Sections ---------------------------------------------- */
.section {
  padding: var(--space-4xl) 0;
}
.section--alt {
  background: var(--bg-alt);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}
.section__header .text-title {
  margin-bottom: var(--space-sm);
}
.section__header .text-lead {
  max-width: 560px;
  margin-inline: auto;
}

/* --- Hero -------------------------------------------------- */
.hero {
  background: var(--bg-hero);
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, var(--accent-subtle) 0%, transparent 70%);
  pointer-events: none;
}

.hero__badge { margin-bottom: var(--space-lg); }

.hero__title {
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: var(--space-md);
  position: relative;
}

.hero__subtitle {
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: var(--space-2xl);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.hero__meta {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  color: var(--text-muted);
  font-size: var(--fs-sm);
}
.hero__meta span {
  display: flex;
  align-items: center;
  gap: 0.35em;
}

/* --- Modes grid -------------------------------------------- */
.modes__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-xl);
  transition: all var(--dur) var(--ease);
}
.mode-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.mode-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.mode-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--r-md);
  background: var(--accent-subtle);
  color: var(--accent);
  flex-shrink: 0;
  transition: color 0.3s var(--ease), background 0.3s var(--ease);
}
.mode-card[data-signal]:hover .mode-card__icon {
  color: var(--mode-signal);
  background: color-mix(in srgb, var(--mode-signal) 12%, transparent);
}
.mode-card[data-signal="off"]          { --mode-signal: var(--eye-off); }
.mode-card[data-signal="presentation"] { --mode-signal: var(--eye-presentation); }
.mode-card[data-signal="background"]   { --mode-signal: var(--eye-background); }
.mode-card[data-signal="powersaver"]   { --mode-signal: var(--eye-powersaver); }
.mode-card[data-signal="highperf"]     { --mode-signal: var(--eye-highperf); }

.mode-card__name {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-lg);
}

.mode-card__text {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
}

/* --- Features grid ----------------------------------------- */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-xl);
  transition: all var(--dur) var(--ease);
}
.feature-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.feature-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--r-md);
  background: var(--accent-subtle);
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.feature-card__title {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-base);
  margin-bottom: var(--space-xs);
}

.feature-card__text {
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
}

.feature-card--pro .feature-card__icon {
  background: var(--pro-badge-bg);
  color: var(--pro-text);
}

/* --- Comparison table -------------------------------------- */
.compare {
  max-width: 700px;
  margin-inline: auto;
}

.compare__table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.compare__table th,
.compare__table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.compare__table thead th {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-base);
  padding-bottom: var(--space-lg);
  border-bottom: 2px solid var(--border-strong);
}

.compare__table th:nth-child(2),
.compare__table td:nth-child(2),
.compare__table th:nth-child(3),
.compare__table td:nth-child(3) {
  text-align: center;
  width: 100px;
}

.compare__table th:nth-child(3) {
  color: var(--pro-text);
}

.compare__check {
  color: var(--accent);
}
.compare__cross {
  color: var(--text-muted);
}
.compare__table tbody tr:hover {
  background: var(--accent-subtle);
}

.compare__footer {
  text-align: center;
  margin-top: var(--space-2xl);
}
.compare__price {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--pro-text);
}
.compare__price-note {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  margin-top: var(--space-xs);
}

/* --- Privacy strip ----------------------------------------- */
.privacy__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
}

.privacy__card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  transition: border-color var(--dur) var(--ease);
}
.privacy__card:hover {
  border-color: var(--border-hover);
}
.privacy__icon {
  display: flex;
  color: var(--accent);
  flex-shrink: 0;
}

/* --- Bottom CTA -------------------------------------------- */
.bottom-cta {
  text-align: center;
}
.bottom-cta .hero__cta {
  justify-content: center;
}

/* --- Footer ------------------------------------------------ */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-xl) 0;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer__copy {
  color: var(--text-muted);
  font-size: var(--fs-xs);
}
.footer__links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}
.footer__links a {
  color: var(--text-muted);
  font-size: var(--fs-xs);
  transition: color var(--dur) var(--ease);
}
.footer__links a:hover { color: var(--text); }

/* --- Mobile adjustments ------------------------------------ */
@media (max-width: 767px) {
  .section { padding: var(--space-3xl) 0; }
  .hero { padding: var(--space-3xl) 0; }
  .modes__grid { grid-template-columns: 1fr; }
  .features__grid { grid-template-columns: 1fr; }
  .compare__table th:first-child,
  .compare__table td:first-child {
    padding-inline: var(--space-sm);
  }
  .hero__meta { flex-direction: column; gap: var(--space-sm); }
}