body {
  font-family: var(--font-system);
  background-color: var(--bg-canvas);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Base Accessibility Focus */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* Site Header */
.site-header {
  background-color: var(--bg-surface);
  border-block-end: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: var(--space-4);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text-main);
  min-height: var(--min-touch-size);
  padding-inline: var(--space-2);
}

.brand-icon {
  width: 28px;
  height: 28px;
}

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

.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--min-touch-size);
  min-height: var(--min-touch-size);
  padding-inline: var(--space-3);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.lang-switch:hover {
  color: var(--text-main);
  background-color: var(--bg-subtle);
  border-color: var(--border-medium);
}

/* Main Content Area */
.site-main {
  flex: 1;
  padding-block: var(--space-8);
}

/* Hero Section */
.hero {
  text-align: center;
  padding-block: var(--space-8);
}

.hero-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-block-end: var(--space-3);
  line-height: 1.2;
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--text-muted);
  max-width: 600px;
  margin-inline: auto;
  margin-block-end: var(--space-6);
}

/* Search Bar */
.search-wrapper {
  max-width: 520px;
  margin-inline: auto;
  position: relative;
}

.search-input {
  width: 100%;
  min-height: var(--min-touch-size);
  padding-inline-start: var(--space-4);
  padding-inline-end: var(--space-10);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-full);
  font-size: 1rem;
  color: var(--text-main);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--brand-primary-light);
}

/* Tools Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-block: var(--space-6);
}

.tool-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.tool-card:hover {
  border-color: var(--brand-primary);
  transform: translateY(-2px);
}

.tool-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-block-end: var(--space-2);
  color: var(--text-main);
}

.tool-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
  flex: 1;
}

.tool-card-meta {
  margin-block-start: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-subtle);
}

/* Site Footer */
.site-footer {
  background-color: var(--bg-surface);
  border-block-start: 1px solid var(--border-subtle);
  padding-block: var(--space-8);
  margin-block-start: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  text-align: center;
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    text-align: start;
  }
}

.footer-copy {
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-muted);
  min-height: var(--min-touch-size);
  display: inline-flex;
  align-items: center;
  padding-inline: var(--space-2);
}

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