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

:root {
  --color-primary:       #1a3a6b;
  --color-primary-light: #2d5aa0;
  --color-primary-dark:  #122850;
  --color-accent:        #e8a020;
  --color-bg:            #f2f4f8;
  --color-surface:       #ffffff;
  --color-text:          #1a1a2e;
  --color-text-muted:    #6b7080;
  --color-border:        #dde1ea;
  --radius-sm:           6px;
  --radius-md:           10px;
  --shadow-card:         0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-card-hover:   0 8px 24px rgba(0, 0, 0, 0.14);
  --shadow-dropdown:     0 4px 16px rgba(0, 0, 0, 0.12);
  --transition:          0.2s ease;
  --font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ─────────────────────────────────────────────────────────────── */
.site-header {
  background: var(--color-primary);
  color: #fff;
  padding: 2.25rem 1.5rem 2rem;
  border-bottom: 4px solid var(--color-accent);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.ext-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.75rem;
  white-space: nowrap;
  cursor: pointer;
  font-family: var(--font);
  transition: background 0.2s ease, color 0.2s ease;
}

.ext-link:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

.site-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.site-tagline {
  margin-top: 0.4rem;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.72);
}

/* ── Controls (sticky) ───────────────────────────────────────────────────── */
.controls {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.07);
}

.controls-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Search */
.control-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

.search-container {
  width: 100%;
}

.autocomplete-wrapper {
  position: relative;
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  font-size: 1rem;
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.search-input:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(45, 90, 160, 0.15);
  background: var(--color-surface);
}

/* Autocomplete dropdown */
.autocomplete-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  box-shadow: var(--shadow-dropdown);
  max-height: 280px;
  overflow-y: auto;
  list-style: none;
  z-index: 200;
  padding: 0.25rem 0;
}

.autocomplete-list li {
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-size: 0.95rem;
  transition: background var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.ac-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.autocomplete-list li.autocomplete-active .ac-meta,
.autocomplete-list li:hover .ac-meta {
  color: rgba(255, 255, 255, 0.75);
}

.autocomplete-list li:hover,
.autocomplete-list li.autocomplete-active {
  background: var(--color-primary);
  color: #fff;
}

.autocomplete-list li mark {
  background: transparent;
  font-weight: 700;
  color: var(--color-accent);
}

.autocomplete-list li.autocomplete-active mark {
  color: #ffd57a;
}

/* Filters row */
.filters-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: flex-end;
}

.filter-group {
  flex: 1;
  min-width: 150px;
}

.select-wrapper {
  position: relative;
}

.select-wrapper::after {
  content: '';
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid var(--color-text-muted);
  pointer-events: none;
}

.filter-select {
  width: 100%;
  padding: 0.65rem 2.25rem 0.65rem 0.85rem;
  font-size: 0.95rem;
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.filter-select:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(45, 90, 160, 0.15);
  background: var(--color-surface);
}


.reset-btn {
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-family: var(--font);
  font-weight: 600;
  color: var(--color-primary);
  background: transparent;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
  align-self: flex-end;
}

.reset-btn:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ── Main Content ────────────────────────────────────────────────────────── */
.main-content {
  flex: 1;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.results-meta {
  padding: 1rem 0 0.5rem;
}

.results-count {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Results grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-top: 0.5rem;
}

/* ── School Card ─────────────────────────────────────────────────────────── */
.school-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 1.25rem 1.375rem 1.375rem;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition), transform var(--transition);
}

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


.card-name {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.3rem;
}

.card-favicon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  border-radius: 3px;
}

.card-name a {
  color: var(--color-primary);
  text-decoration: none;
}

.card-name a:hover {
  text-decoration: underline;
}

.card-conference {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.6rem;
  line-height: 1.4;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 0.6rem;
  gap: 0.5rem;
}

.card-state {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.card-state svg {
  flex-shrink: 0;
  color: var(--color-primary-light);
}

.card-association {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}


/* ── Empty State ─────────────────────────────────────────────────────────── */
.empty-state[hidden] { display: none; }

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 2rem;
  gap: 0.75rem;
}

.empty-icon {
  width: 56px;
  height: 56px;
  color: var(--color-border);
  margin-bottom: 0.5rem;
}

.empty-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
}

.empty-body {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* ── Modal ───────────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop[hidden] { display: none; }

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.modal-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0 0.25rem;
}

.modal-close:hover { color: var(--color-text); }

.modal-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
}

.optional {
  font-weight: 400;
  color: var(--color-text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.6rem 0.85rem;
  font-size: 0.95rem;
  font-family: var(--font);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(45,90,160,0.15);
}

.form-group textarea { resize: vertical; }

.modal-footer {
  padding-top: 0.5rem;
}

.submit-btn {
  width: 100%;
  padding: 0.7rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.2s ease;
}

.submit-btn:hover { background: var(--color-primary-light); }
.submit-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.form-status {
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}

.form-status--success {
  background: #edfaf1;
  border: 1px solid #7dd5a0;
  color: #1a6e3e;
}

.form-status--error {
  background: #fef2f2;
  border: 1px solid #f5a0a0;
  color: #8b1a1a;
}

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  background: #1a6e3e;
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 600;
  white-space: nowrap;
}

.toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
  padding: 1.25rem 1.5rem;
  font-size: 0.85rem;
  margin-top: auto;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .filters-row {
    flex-direction: column;
    gap: 0.6rem;
  }

  .filter-group {
    min-width: 0;
    width: 100%;
  }

  .reset-btn {
    width: 100%;
    text-align: center;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: 1.5rem 1rem 1.25rem;
  }

  .controls-inner {
    padding: 1rem;
  }

  .main-content {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}