/* ===================================================================
   LAYOUT — Container, navigation, sections, footer, responsive
   =================================================================== */

/* --- Skip Link --------------------------------------------------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--container-pad);
  z-index: 100;
  padding: var(--space-sm) var(--space-md);
  background: var(--accent);
  color: #fff;
  border-radius: 0 0 6px 6px;
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* --- Container --------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* --- Navigation -------------------------------------------------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
}

.nav-logo img {
  height: 28px;
  width: auto;
}

.nav-logo-text {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

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

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--text);
}

/* Language switcher */
.lang-switcher {
  display: flex;
  gap: 2px;
  background: var(--bg-alt);
  border-radius: 6px;
  padding: 2px;
}

.lang-btn {
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: 4px;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.lang-btn:hover {
  color: var(--text);
}

.lang-btn[aria-checked="true"] {
  background: var(--bg-card);
  color: var(--accent);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  width: 36px;
  height: 36px;
  justify-content: center;
  align-items: center;
}

.nav-toggle .stroke {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

/* --- Sections ---------------------------------------------------- */

.section {
  padding-block: var(--space-xl);
}

.section-alt {
  background: var(--bg-alt);
}

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

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

.section-header p {
  color: var(--text-muted);
}

/* --- Welcome / Intro --------------------------------------------- */

.welcome {
  padding-block: var(--space-xl) var(--space-lg);
}

.welcome-inner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.welcome-logo {
  flex-shrink: 0;
}

.welcome-logo img {
  width: 80px;
  height: 80px;
}

.welcome-text h1 {
  margin-bottom: var(--space-sm);
}

.welcome-text p {
  font-size: 1.05rem;
  line-height: 1.75;
}

.welcome-text .download-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.action-link {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px dashed var(--border);
  padding-bottom: 1px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.action-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* --- Footer ------------------------------------------------------ */

.footer {
  background: var(--text);
  color: rgba(255, 255, 255, 0.65);
  padding-block: var(--space-xl);
  margin-top: var(--space-xl);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-lg);
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.footer-brand {
  max-width: 320px;
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-xs);
}

.footer-brand p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  max-width: 100%;
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
}

.footer-col h4 {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  padding-block: 0.15rem;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.35);
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.footer-bottom .lang-switcher {
  background: rgba(255, 255, 255, 0.08);
}

.footer-bottom .lang-btn {
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom .lang-btn:hover {
  color: rgba(255, 255, 255, 0.8);
}

.footer-bottom .lang-btn[aria-checked="true"] {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  box-shadow: none;
}

/* --- Responsive: Mobile ------------------------------------------ */

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    inset: 3.5rem 0 0 0;
    height: calc(100dvh - 3.5rem);
    flex-direction: column;
    justify-content: flex-start;
    gap: 0;
    background: #faf7f2;
    padding: var(--space-lg);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 999;
    overflow-y: auto;
  }

  .nav-links[data-open="true"] {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.1rem;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-light);
    width: 100%;
  }

  .nav-links .lang-switcher {
    margin-top: var(--space-md);
  }

  .welcome {
    padding-block: var(--space-lg) var(--space-md);
  }

  .welcome-inner {
    flex-direction: column;
    text-align: center;
  }

  .welcome-logo img {
    width: 64px;
    height: 64px;
  }

  .section {
    padding-block: var(--space-lg);
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* --- Scroll Reveal Animation ------------------------------------- */

/* Reveal only activates after JS adds .reveal-ready to <html> */
.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}