/**
 * Sections — header, hero, features, how-it-works, pricing, footer
 */

/* ==========================================================================
   SITE HEADER
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 64px;
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition-base), border-color var(--transition-base);
  background: transparent;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: var(--color-bg);
  border-bottom-color: var(--color-border);
}

.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--fw-bold);
  font-size: var(--text-lg);
  color: var(--color-text);
  transition: color var(--transition-fast);
}

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

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

.site-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

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

/* Mobile hamburger */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  z-index: 1001;
}

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

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--color-bg);
  padding: calc(64px + var(--space-4)) var(--space-4) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
}

.mobile-menu.is-open {
  transform: translateX(0);
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mobile-menu__nav .nav-link {
  font-size: var(--text-xl);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu__nav .nav-link:last-child {
  border-bottom: none;
}

.mobile-menu__actions {
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ==========================================================================
   HERO
   ========================================================================== */

.hero {
  min-height: 100vh;
  padding-top: calc(64px + var(--space-8));
  padding-bottom: var(--space-8);
  display: flex;
  align-items: center;
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero__inner {
  max-width: 680px;
}

.hero__headline {
  font-family: var(--font-display);
  font-size: var(--text-6xl);
  font-weight: var(--fw-normal);
  line-height: var(--lh-tight);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  text-wrap: balance;
}

.hero__sub {
  font-size: var(--text-xl);
  line-height: var(--lh-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 540px;
  margin-inline: auto;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-3);
}

.hero__meta {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-3);
}

.hero__waveform {
  margin-top: var(--space-7);
}

/* ==========================================================================
   FEATURES
   ========================================================================== */

.features {
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   HOW IT WORKS
   ========================================================================== */

.how-it-works {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* ==========================================================================
   PRICING
   ========================================================================== */

.pricing {
  text-align: center;
}

.pricing__hero {
  margin-bottom: var(--space-3);
}

.pricing__amount {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  color: var(--color-text);
  line-height: 1;
}

.pricing__once {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-left: var(--space-2);
}

.pricing__note {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.pricing__req {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  max-width: 460px;
  margin-inline: auto;
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq {
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0 var(--space-5);
}

.site-footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.site-footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--fw-semibold);
  font-size: var(--text-base);
  color: var(--color-text);
}

.site-footer__links {
  display: flex;
  gap: var(--space-4);
}

.site-footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.site-footer__built {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  text-align: center;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.site-footer__built a {
  color: var(--color-text);
  text-decoration: none;
}

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

.site-footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  text-align: center;
  padding-top: var(--space-2);
}