/* ==========================================================================
   Vidra Shared Components
   /shared/components.css
   ========================================================================== */

/* ==========================================================================
   Container
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--content-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container--sm { max-width: var(--content-sm); }
.container--md { max-width: var(--content-md); }
.container--lg { max-width: var(--content-lg); }
.container--2xl { max-width: var(--content-2xl); }

/* ==========================================================================
   Site Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(var(--color-bg-rgb), 0.8);
  backdrop-filter: blur(12px) saturate(1.8);
  -webkit-backdrop-filter: blur(12px) saturate(1.8);
  border-bottom: 1px solid var(--color-border-muted);
  transition: border-color var(--duration-base) var(--ease-out),
              background-color var(--duration-base) var(--ease-out);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--content-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Logo */
.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  font-size: var(--text-xl);
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
  text-decoration: none;
  flex-shrink: 0;
}

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

.site-header__logo svg,
.site-header__logo img {
  height: 28px;
  width: auto;
}

/* Header actions (right side) */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ==========================================================================
   Site Navigation
   ========================================================================== */

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

.site-nav__link:hover {
  color: var(--color-text);
  background: var(--color-bg-subtle);
}

.site-nav__link.is-active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* Dropdown within nav */
.site-nav__dropdown {
  position: relative;
}

.site-nav__dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%);
  min-width: 200px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  z-index: var(--z-dropdown);
}

.site-nav__dropdown:hover .site-nav__dropdown-menu,
.site-nav__dropdown:focus-within .site-nav__dropdown-menu {
  display: block;
}

.site-nav__dropdown-item {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

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

/* ==========================================================================
   Mobile Menu Toggle
   ========================================================================== */

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  background: none;
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background-color var(--duration-fast) var(--ease-out);
}

.menu-toggle:hover {
  background: var(--color-bg-subtle);
}

.menu-toggle__icon {
  width: 20px;
  height: 14px;
  position: relative;
}

.menu-toggle__line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: var(--radius-full);
  transition: transform var(--duration-base) var(--ease-out),
              opacity var(--duration-base) var(--ease-out);
}

.menu-toggle__line:nth-child(1) { top: 0; }
.menu-toggle__line:nth-child(2) { top: 6px; }
.menu-toggle__line:nth-child(3) { top: 12px; }

/* Animate to X when open */
.menu-toggle[aria-expanded="true"] .menu-toggle__line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.menu-toggle[aria-expanded="true"] .menu-toggle__line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ==========================================================================
   Theme Toggle
   ========================================================================== */

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-bg-emphasis);
  background: var(--color-bg-subtle);
}

/* Sun icon - visible in dark mode */
.theme-toggle__sun {
  display: none;
  width: 18px;
  height: 18px;
}

/* Moon icon - visible in light mode */
.theme-toggle__moon {
  display: block;
  width: 18px;
  height: 18px;
}

[data-theme="dark"] .theme-toggle__sun {
  display: block;
}

[data-theme="dark"] .theme-toggle__moon {
  display: none;
}

/* ==========================================================================
   Language Switcher
   ========================================================================== */

.lang-switcher {
  position: relative;
}

.lang-switcher__trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.lang-switcher__trigger:hover {
  color: var(--color-text);
  border-color: var(--color-bg-emphasis);
}

.lang-switcher__trigger svg {
  width: 12px;
  height: 12px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.lang-switcher.is-open .lang-switcher__trigger svg {
  transform: rotate(180deg);
}

.lang-switcher__menu {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-1));
  right: 0;
  min-width: 120px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-1);
  z-index: var(--z-dropdown);
}

.lang-switcher.is-open .lang-switcher__menu {
  display: block;
}

.lang-switcher__option {
  display: block;
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

.lang-switcher__option:hover {
  color: var(--color-text);
  background: var(--color-bg-subtle);
}

.lang-switcher__option.is-active {
  color: var(--color-primary);
  font-weight: var(--font-semibold);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition: color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

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

.btn:disabled,
.btn[disabled] {
  opacity: 0.5;
  pointer-events: none;
}

/* Sizes */
.btn--sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  border-radius: var(--radius-md);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
}

/* Primary */
.btn--primary {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.35);
}

/* Secondary */
.btn--secondary {
  color: var(--color-text);
  background: var(--color-bg);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-bg-subtle);
  border-color: var(--color-bg-emphasis);
}

/* Ghost */
.btn--ghost {
  color: var(--color-text-secondary);
  background: transparent;
  border-color: transparent;
}

.btn--ghost:hover {
  color: var(--color-text);
  background: var(--color-bg-subtle);
}

/* Accent */
.btn--accent {
  color: #fff;
  background: var(--color-accent);
  border-color: var(--color-accent);
}

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

/* Icon-only button */
.btn--icon {
  width: 40px;
  height: 40px;
  padding: 0;
}

.btn--icon.btn--sm {
  width: 32px;
  height: 32px;
}

.btn--icon.btn--lg {
  width: 48px;
  height: 48px;
}

/* ==========================================================================
   Site Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: var(--space-16) 0 var(--space-8);
  margin-top: auto;
}

.site-footer__inner {
  max-width: var(--content-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

/* Footer brand column */
.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.site-footer__brand-name {
  font-family: var(--font-display);
  font-weight: var(--font-bold);
  font-size: var(--text-xl);
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
}

.site-footer__brand-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  max-width: 280px;
}

/* Footer nav columns */
.site-footer__column-title {
  font-family: var(--font-display);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-4);
}

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

.site-footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

/* Footer bottom bar */
.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-muted);
}

.site-footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
}

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

.site-footer__social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

.site-footer__social-link:hover {
  color: var(--color-text);
  background: var(--color-bg-subtle);
}

.site-footer__social-link svg {
  width: 18px;
  height: 18px;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }
.text-subtle { color: var(--color-text-subtle); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ==========================================================================
   Responsive - Mobile First
   ========================================================================== */

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  /* Header */
  .site-header__inner {
    padding: 0 var(--space-4);
  }

  /* Show hamburger, hide desktop nav */
  .menu-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4);
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    overflow-y: auto;
    z-index: var(--z-fixed);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav__link {
    font-size: var(--text-base);
    padding: var(--space-4) var(--space-4);
    border-bottom: 1px solid var(--color-border-muted);
    border-radius: 0;
  }

  .site-nav__link:last-child {
    border-bottom: none;
  }

  /* Footer */
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .site-footer__brand-desc {
    max-width: 100%;
  }

  .site-footer__bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

/* ==========================================================================
   Palette Indicator
   A subtle dot + label in the footer showing the current palette.
   ========================================================================== */

.palette-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  letter-spacing: var(--tracking-wide);
  user-select: none;
  cursor: default;
}

.palette-indicator__dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  flex-shrink: 0;
  transition: background-color var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
}

.palette-indicator__label {
  text-transform: lowercase;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--duration-base) var(--ease-out),
              transform var(--duration-base) var(--ease-out);
  white-space: nowrap;
}

.palette-indicator:hover .palette-indicator__label {
  opacity: 1;
  transform: translateX(0);
}

.palette-indicator:hover .palette-indicator__dot {
  transform: scale(1.25);
}

/* Easter egg reveal message */
.palette-indicator__message {
  display: none;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-style: italic;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* When monochrome is active, show the achievement message */
.palette-indicator.is-easter-egg .palette-indicator__message {
  display: inline;
  animation: paletteReveal var(--duration-slower) var(--ease-out) both;
  animation-delay: 800ms;
}

.palette-indicator.is-easter-egg .palette-indicator__label {
  opacity: 1;
  transform: translateX(0);
}

@keyframes paletteReveal {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Reduced motion: skip the animation */
@media (prefers-reduced-motion: reduce) {
  .palette-indicator__label {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .palette-indicator__dot {
    transition: none;
  }

  .palette-indicator.is-easter-egg .palette-indicator__message {
    animation: none;
    opacity: 1;
  }
}