/* ================================================================
   DFW Apprenticeship Finder — Styles
   Brand: Our Community Tech
   ================================================================ */

/* --- Design Tokens --- */
:root {
  /* Brand colors */
  --sage: #b8c9c0;
  --sage-light: #d4e0da;
  --sage-dark: #8fa898;
  --teal: #1e3545;
  --teal-light: #2a4a5e;
  --white: #ffffff;
  --black: #000000;

  /* Light theme */
  --bg-primary: #f7f9f8;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --text-primary: #1a1a1a;
  --text-secondary: #555555;
  --text-muted: #888888;
  --border-color: #e2e8e5;
  --border-color-hover: #b8c9c0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
  --input-bg: #ffffff;
  --input-border: #d4ddd8;
  --badge-gray-bg: #e8e8e8;
  --badge-gray-text: #666666;

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-base: 250ms var(--ease-out);
  --transition-slow: 400ms var(--ease-out);
}

/* --- Dark Theme --- */
[data-theme="dark"] {
  --bg-primary: #0f1a21;
  --bg-secondary: #162028;
  --bg-card: #1a2a34;
  --text-primary: #e8ece9;
  --text-secondary: #a0b0a8;
  --text-muted: #6b7f75;
  --border-color: #2a3a42;
  --border-color-hover: #3d5248;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
  --input-bg: #162028;
  --input-border: #2a3a42;
  --badge-gray-bg: #2a3a42;
  --badge-gray-text: #8a9a92;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-base), color var(--transition-base);
}

a {
  color: var(--teal);
  text-decoration: none;
}

[data-theme="dark"] a {
  color: var(--sage);
}

a:hover { text-decoration: underline; }

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--teal);
  color: var(--white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-size: 0.875rem;
  font-weight: 600;
}
.skip-link:focus {
  top: var(--space-md);
  text-decoration: none;
}

.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;
}

/* --- Header --- */
.site-header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-xl) 0;
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.brand-logo {
  color: var(--teal);
  flex-shrink: 0;
}
[data-theme="dark"] .brand-logo {
  color: var(--sage);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  margin-top: 2px;
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.theme-toggle:hover {
  border-color: var(--border-color-hover);
  color: var(--text-primary);
  background: var(--bg-secondary);
}
.theme-toggle:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.icon-sun, .icon-moon { display: block; }
[data-theme="light"] .icon-moon,
:root:not([data-theme="dark"]) .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

.header-intro {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.65;
}

.header-intro a {
  font-weight: 600;
}

/* --- Filters --- */
.main-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-xl) var(--space-3xl);
}

.filters {
  margin-bottom: var(--space-xl);
}

.filter-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.filter-search {
  grid-column: 1 / 2;
}

.search-wrapper {
  position: relative;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-wrapper input {
  width: 100%;
  padding: 10px 12px 10px 40px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  background: var(--input-bg);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.search-wrapper input::placeholder {
  color: var(--text-muted);
}

.search-wrapper input:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(30, 53, 69, 0.12);
}
[data-theme="dark"] .search-wrapper input:focus {
  box-shadow: 0 0 0 3px rgba(184, 201, 192, 0.15);
}

select {
  width: 100%;
  padding: 10px 32px 10px 12px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  background: var(--input-bg);
  color: var(--text-primary);
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: all var(--transition-fast);
}

select:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(30, 53, 69, 0.12);
}
[data-theme="dark"] select:focus {
  box-shadow: 0 0 0 3px rgba(184, 201, 192, 0.15);
}

.results-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.results-count {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.clear-btn {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--teal);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
[data-theme="dark"] .clear-btn {
  color: var(--sage);
}
.clear-btn:hover {
  background: rgba(30, 53, 69, 0.06);
}
[data-theme="dark"] .clear-btn:hover {
  background: rgba(184, 201, 192, 0.1);
}

/* --- Results Grid --- */
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

/* --- Card --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: all var(--transition-base);
  animation: cardIn 0.35s var(--ease-out) both;
}

.card:hover {
  border-color: var(--border-color-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.35;
  margin-bottom: 2px;
}

.card-employer {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.card-location {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-xs);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: 100px;
  white-space: nowrap;
}

.badge-partner {
  background: var(--teal);
  color: var(--white);
}

.badge-occupation {
  background: var(--sage);
  color: var(--teal);
}

.badge-not-registered {
  background: var(--badge-gray-bg);
  color: var(--badge-gray-text);
}

.card-onet {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.card-source {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-style: italic;
}

.card-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: auto;
  padding-top: var(--space-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  flex: 1;
  text-align: center;
}

.btn:hover {
  text-decoration: none;
}

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

.btn-primary {
  background: var(--teal);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--teal-light);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: transparent;
  color: var(--teal);
  border: 1px solid var(--border-color);
}
[data-theme="dark"] .btn-secondary {
  color: var(--sage-light);
  border-color: var(--sage-dark);
}
.btn-secondary:hover {
  border-color: var(--border-color-hover);
  background: rgba(30, 53, 69, 0.04);
}
[data-theme="dark"] .btn-secondary:hover {
  background: rgba(184, 201, 192, 0.1);
  border-color: var(--sage);
}

/* --- No Results --- */
.no-results {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  color: var(--text-muted);
}

.no-results svg {
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.no-results-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.no-results-text {
  font-size: 0.9rem;
}

/* --- Footer --- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-xl) 0;
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  text-align: center;
}

.footer-container p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
  line-height: 1.7;
}

.footer-container p:last-child {
  margin-bottom: 0;
}

.footer-container a {
  font-weight: 600;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .filter-row {
    grid-template-columns: 1fr 1fr;
  }
  .filter-search {
    grid-column: 1 / -1;
  }
  .results-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .header-container,
  .main-container,
  .footer-container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .header-top {
    flex-wrap: nowrap;
  }

  .brand-logo {
    width: 32px;
    height: 32px;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .filter-row {
    grid-template-columns: 1fr;
  }
  .filter-search {
    grid-column: 1;
  }

  .results-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

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

/* --- System preference fallback --- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #0f1a21;
    --bg-secondary: #162028;
    --bg-card: #1a2a34;
    --text-primary: #e8ece9;
    --text-secondary: #a0b0a8;
    --text-muted: #6b7f75;
    --border-color: #2a3a42;
    --border-color-hover: #3d5248;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
    --input-bg: #162028;
    --input-border: #2a3a42;
    --badge-gray-bg: #2a3a42;
    --badge-gray-text: #8a9a92;
  }
}

/* --- Animation stagger utility (set via JS) --- */
.card[style*="--i"] {
  animation-delay: calc(var(--i) * 30ms);
}