/**
 * Base Styles
 *
 * Core typography, layout, and component styles.
 */

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

/* Skip links for keyboard navigation */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: calc(var(--z-fixed) + 10);
  text-decoration: none;
  font-weight: 500;
  border-radius: 0 0 var(--radius-md) 0;
  transition: top var(--transition-fast);
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* Typography */
h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.2;
}

h2 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  line-height: 1.3;
}

h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: 1.4;
}

/* Links */
a:hover {
  color: var(--color-primary);
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background-color: var(--color-primary);
  color: white;
  height: 60px;
  display: flex;
  align-items: center;
  box-shadow: var(--shadow-md);
}

.header__container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header__title a {
  color: white;
}

/* Search */
.search {
  position: relative;
  width: 300px;
}

.search__input {
  width: 100%;
  height: 36px;
  padding: 0 var(--spacing-md);
  padding-right: 36px;
  border: none;
  border-radius: var(--radius-full);
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: var(--font-size-sm);
  transition: background-color var(--transition-fast);
}

.search__input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.search__input:focus {
  background-color: rgba(255, 255, 255, 0.2);
}

.search__icon {
  position: absolute;
  right: var(--spacing-sm);
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.6);
  pointer-events: none;
}

.search__results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: var(--spacing-xs);
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 300px;
  overflow-y: auto;
  display: none;
}

.search__results.active {
  display: block;
}

.search__result {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text);
  cursor: pointer;
  border-bottom: 1px solid var(--color-border);
}

.search__result:last-child {
  border-bottom: none;
}

.search__result:hover,
.search__result.selected {
  background-color: var(--color-bg-alt);
}

.search__result-name {
  font-weight: 500;
}

.search__result-code {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Main content */
.main {
  padding-top: 60px; /* Header height */
  min-height: 100vh;
}

/* Cards */
.card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
}

.stat-card {
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  text-align: center;
}

.stat-card__value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
}

.stat-card__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

.stat-card--warning .stat-card__value {
  color: var(--color-delay-orange);
}

.stat-card--danger .stat-card__value {
  color: var(--color-delay-red);
}

.stat-card--success .stat-card__value {
  color: var(--color-delay-green);
}

/* Loading state */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-muted);
}

.loading__spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-right: var(--spacing-sm);
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Error state */
.error {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-delay-red);
}

.error__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

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

/* Back link */
.back-link {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
  transition: color var(--transition-fast);
}

.back-link:hover {
  color: var(--color-primary-dark);
}

.back-link svg {
  margin-right: var(--spacing-xs);
}

/* Footer */
.footer {
  background-color: var(--color-bg-alt);
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-border);
}

.footer__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.footer__text,
.footer__contact,
.footer__copyright {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0;
}

.footer__text a,
.footer__contact a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer__text a:hover,
.footer__contact a:hover {
  color: var(--color-primary-dark);
}

.footer__separator {
  display: none;
}

@media (min-width: 576px) {
  .footer__separator {
    display: inline;
    color: var(--color-border-dark);
  }
}