/* AceNick Layout: Header, Footer, Hero, Container, Drawer */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

/* Site Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.25rem;
}
.brand-link:hover {
  text-decoration: none;
  opacity: 0.9;
}
.brand-logo {
  height: 32px;
  width: 32px;
  display: block;
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
}
@media (min-width: 900px) {
  .nav-links {
    display: flex;
  }
}
.nav-link {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.nav-link:hover,
.nav-link.active,
.nav-link[aria-current="page"] {
  color: var(--color-primary);
  text-decoration: none;
  background: var(--color-surface-hover);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-actions [data-t="nav-saved"] {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-3);
  min-height: var(--touch-target);
  border-radius: var(--radius-full);
  background: var(--color-surface-hover);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}
.nav-actions [data-t="nav-saved"]:hover {
  background: var(--color-surface-active);
  border-color: var(--color-border-hover);
  color: var(--color-primary);
  text-decoration: none;
}

/* Hero Section */
.hero {
  padding: var(--space-8) 0 var(--space-4);
  text-align: center;
}
.hero h1 {
  font-size: 2rem;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-2);
}
@media (min-width: 640px) {
  .hero h1 {
    font-size: 2.5rem;
  }
}
.hero .intro {
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Main App & Tool Root */
#app {
  flex: 1;
  display: flex;
  flex-direction: column;
}

#tool[data-tool-root] {
  margin: var(--space-4) auto var(--space-8);
  width: 100%;
}

#tool:empty {
  display: none;
  margin: 0;
}

/* Content Pages */
.page-content {
  padding: var(--space-6) 0 var(--space-12);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-6);
}
.content-section {
  margin-bottom: var(--space-6);
  max-width: 800px;
}
.page-content h2 {
  font-size: 1.375rem;
  margin-bottom: var(--space-3);
}
.page-content p {
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}
.page-content ul,
.page-content ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}
.page-content li {
  margin-bottom: var(--space-2);
  color: var(--color-text);
  line-height: 1.5;
}

.noscript {
  text-align: center;
  padding: var(--space-4);
  color: var(--color-warning);
  font-weight: 500;
}

/* Drawer Component (Favorites / Recents) */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}
.drawer-backdrop:not(.open) {
  display: none;
}
.drawer-backdrop.open {
  display: block;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 400px;
  background: var(--color-surface);
  z-index: 201;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}
.drawer-backdrop.open .drawer {
  transform: translateX(0);
}

.drawer-header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.drawer-title {
  font-size: 1.25rem;
  font-weight: 700;
}
.drawer-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-hover);
}
.drawer-tab {
  flex: 1;
  padding: var(--space-3);
  text-align: center;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  min-height: 44px;
}
.drawer-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: var(--color-surface);
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.drawer-empty {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  color: var(--color-text-muted);
}

.drawer-footer {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
}

/* Site Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) 0 var(--space-10);
  margin-top: auto;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
}

@media (min-width: 768px) {
  .footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 2fr;
    align-items: start;
    gap: var(--space-8);
  }
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  list-style: none;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  padding: var(--space-1) 0;
  display: inline-block;
  transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-links a[aria-current="page"] {
  color: var(--color-primary);
  text-decoration: underline;
}

.footer-note {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.lang-switch {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}

.lang-switch .footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  justify-content: center;
}

.lang-switch a[aria-current="true"] {
  color: var(--color-primary);
  font-weight: 700;
}