/* components.css — Code Family Website
   Reusable components: nav, footer, buttons, cards, badges, privacy promise.
   All component styles are class-based; no element selectors except within components.
*/

/* ═══════════════════════════════════════════════
   SKIP NAVIGATION LINK (WCAG 2.1 AA)
═══════════════════════════════════════════════ */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: var(--text-sm);
  text-decoration: none;
  z-index: 9999;
  transition: top 0.2s;
}
.skip-link:focus {
  top: var(--space-4);
}

/* ═══════════════════════════════════════════════
   FOCUS INDICATORS (WCAG 2.1 AA)
═══════════════════════════════════════════════ */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

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

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width-content);
  margin-inline: auto;
  padding-inline: var(--space-6);
  height: 60px;
  gap: var(--space-8);
}

/* Wordmark */
.nav__wordmark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: var(--tracking-snug);
  color: var(--color-text-primary);
  white-space: nowrap;
  text-decoration: none;
  flex-shrink: 0;
}

.nav__wordmark:hover {
  color: var(--color-text-primary);
}

.nav__wordmark svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

/* Desktop links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

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

/* Apps dropdown */
.nav__dropdown {
  position: relative;
}

.nav__dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  transition: color var(--transition-fast);
}

.nav__dropdown-toggle:hover {
  color: var(--color-text-primary);
}

.nav__dropdown-toggle svg {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.nav__dropdown.open .nav__dropdown-toggle svg {
  transform: rotate(180deg);
}

.nav__dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-3));
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.nav__dropdown.open .nav__dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav__dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.nav__dropdown-item:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.nav__dropdown-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* Mobile hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav__hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.nav__mobile-menu {
  display: none;
  flex-direction: column;
  padding: var(--space-4) var(--space-6) var(--space-6);
  border-top: 1px solid var(--color-border);
  gap: var(--space-1);
  background: var(--color-nav-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.nav__mobile-menu.open {
  display: flex;
}

.nav__mobile-link {
  display: block;
  padding: var(--space-3) var(--space-2);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-primary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav__mobile-link:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.nav__mobile-section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  padding: var(--space-3) var(--space-2) var(--space-1);
  margin-top: var(--space-2);
}

/* Theme toggle */
.nav__theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 14px 0 10px;
  height: 34px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border-strong);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
  white-space: nowrap;
}

.nav__theme-toggle:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-text-quaternary);
}

.nav__theme-toggle svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  pointer-events: none;
}

/* Light mode: show moon + "Dark" label */
.nav__theme-toggle .icon-sun  { display: none; }
.nav__theme-toggle .icon-moon { display: block; }
.nav__theme-toggle .label-dark  { display: inline; }
.nav__theme-toggle .label-light { display: none; }

/* Dark mode (system) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .nav__theme-toggle .icon-sun  { display: block; }
  :root:not([data-theme="light"]) .nav__theme-toggle .icon-moon { display: none; }
  :root:not([data-theme="light"]) .nav__theme-toggle .label-dark  { display: none; }
  :root:not([data-theme="light"]) .nav__theme-toggle .label-light { display: inline; }
}

/* Dark mode (manual) */
:root[data-theme="dark"] .nav__theme-toggle .icon-sun  { display: block; }
:root[data-theme="dark"] .nav__theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .nav__theme-toggle .label-dark  { display: none; }
:root[data-theme="dark"] .nav__theme-toggle .label-light { display: inline; }

/* Light mode (manual override) */
:root[data-theme="light"] .nav__theme-toggle .icon-sun  { display: none; }
:root[data-theme="light"] .nav__theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .nav__theme-toggle .label-dark  { display: inline; }
:root[data-theme="light"] .nav__theme-toggle .label-light { display: none; }

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__hamburger { display: flex; }
  .nav__theme-toggle { display: none; }
}

/* Mobile nav link sizing for easy tapping */
@media (max-width: 768px) {
  .nav__mobile-link {
    padding: 14px 24px;
    font-size: 1.0625rem;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
  }

  .nav__mobile-link:hover {
    border-radius: 0;
  }
}

/* btn--lg touch targets on mobile */
@media (max-width: 768px) {
  .btn--lg {
    min-height: 48px;
  }
}

/* ═══════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════ */
.footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-16);
  padding-bottom: var(--space-10);
}

.footer__inner {
  max-width: var(--max-width-content);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr repeat(3, auto);
  gap: var(--space-12);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--color-border);
}

.footer__brand {
  max-width: 280px;
}

.footer__brand-name {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.footer__brand-name svg {
  width: 24px;
  height: 24px;
}

.footer__brand p {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  max-width: none;
  line-height: var(--leading-relaxed);
}

.footer__col-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-4);
}

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

.footer__col a {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__col a:hover {
  color: var(--color-text-primary);
}

.footer__privacy-row {
  padding-block: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__copyright {
  font-size: var(--text-sm);
  color: var(--color-text-quaternary);
}

@media (max-width: 768px) {
  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .footer__brand {
    grid-column: 1 / -1;
    max-width: none;
  }
}

@media (max-width: 480px) {
  .footer__top {
    grid-template-columns: 1fr;
  }

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

/* ═══════════════════════════════════════════════
   PRIVACY PROMISE COMPONENT
═══════════════════════════════════════════════ */
.privacy-promise {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  align-items: center;
}

.privacy-promise--centered {
  justify-content: center;
}

.privacy-promise__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
}

.privacy-promise__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-text-tertiary);
}

@media (max-width: 480px) {
  .privacy-promise {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .privacy-promise--centered {
    align-items: center;
  }
}

/* ═══════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-full);
  text-decoration: none !important;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast),
              border-color var(--transition-fast), transform var(--transition-fast),
              box-shadow var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

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

/* Primary */
.btn--primary,
a.btn--primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover,
a.btn--primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: var(--shadow-md);
  color: #FFFFFF;
}

/* Secondary / ghost */
.btn--secondary,
a.btn--secondary {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

.btn--secondary:hover,
a.btn--secondary:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

/* Ghost link style */
.btn--ghost {
  background-color: transparent;
  color: var(--color-accent);
  border-color: transparent;
  padding-inline: var(--space-2);
}

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

/* Large */
.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

/* Small */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* Coming soon pill */
.btn--coming-soon {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-tertiary);
  border-color: var(--color-border);
  cursor: default;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════
   BADGE / PILL
═══════════════════════════════════════════════ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.02em;
}

.badge--platform {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-tertiary);
  border: 1px solid var(--color-border);
}

.badge--accent {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
}

/* ═══════════════════════════════════════════════
   APP CARD (homepage grid)
═══════════════════════════════════════════════ */
.app-card {
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
}

.app-card:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: var(--shadow-lg);
}

.app-card__icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-app-icon);
  overflow: hidden;
  flex-shrink: 0;
}

.app-card__name {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-snug);
}

.app-card__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  line-height: var(--leading-snug);
  max-width: none;
}

.app-card__bullets {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.app-card__bullet {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-snug);
}

.app-card__bullet::before {
  content: '';
  display: block;
  width: 5px;
  height: 5px;
  border-radius: var(--radius-full);
  background-color: currentColor;
  margin-top: 7px;
  flex-shrink: 0;
  opacity: 0.5;
}

.app-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  margin-top: auto;
  transition: gap var(--transition-fast);
}

.app-card__link:hover {
  gap: var(--space-2);
  color: var(--color-accent);
}

/* ═══════════════════════════════════════════════
   FEATURE ROW (app pages)
═══════════════════════════════════════════════ */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.feature-row--reversed {
  direction: rtl;
}

.feature-row--reversed > * {
  direction: ltr;
}

.feature-row__text {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.feature-row__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: var(--tracking-snug);
  color: var(--color-text-primary);
}

.feature-row__desc {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: none;
}

.feature-row__visual {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  background-color: var(--color-bg-secondary);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
}

@media (max-width: 768px) {
  .feature-row {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .feature-row--reversed {
    direction: ltr;
  }
}

/* ═══════════════════════════════════════════════
   HERO (shared base styles)
═══════════════════════════════════════════════ */
.hero {
  padding-top: var(--space-24);
  padding-bottom: var(--space-20);
  text-align: center;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-tertiary);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 52ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
  }
}

/* ═══════════════════════════════════════════════
   SECTION HEADER
═══════════════════════════════════════════════ */
.section-header {
  margin-bottom: var(--space-12);
}

.section-header--centered {
  text-align: center;
}

.section-header--centered p {
  margin-inline: auto;
}

.section-header__title {
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.section-header__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 52ch;
  line-height: var(--leading-relaxed);
}

@media (max-width: 768px) {
  .section-header__title {
    font-size: var(--text-3xl);
  }
}

/* ═══════════════════════════════════════════════
   RELATED APPS (bottom of app pages)
═══════════════════════════════════════════════ */
.related-apps {
  background-color: var(--color-bg-secondary);
  padding-block: var(--space-16);
  border-top: 1px solid var(--color-border);
}

.related-apps__grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-top: var(--space-8);
}

.related-app-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);
}

.related-app-chip:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  color: var(--color-text-primary);
}

.related-app-chip__dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════
   CALLOUT / HIGHLIGHT BOX
═══════════════════════════════════════════════ */
.callout {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
}

.callout p {
  max-width: none;
  margin: 0;
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  font-style: italic;
}