:root {
  --color-bg: #ffffff;
  --color-bg-secondary: #f8f8f8; /* Very light gray for contrast in bento grids */
  --color-text-primary: #111111;
  --color-text-secondary: #666666;
  --color-border: #eeeeee;
  --color-border-sharp: #111111; /* For active states or strong borders */
  --color-accent: #000000;
  --color-white: #ffffff;
  
  --spacing-unit: 4px;
  --border-radius: 4px; /* Sharp minimal look */
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
  font-family: var(--font-family);
  margin: 0;
  padding: 16px;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 {
  font-size: 1.5rem;
  padding-bottom: 20px;
  text-align: center;
  text-transform: uppercase; /* Sharp look */
}

a {
  text-decoration: none;
  color: inherit;
}

/* --- Layout Containers --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* --- Filter Section (Sticky) --- */
.filter-container {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(5px);
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
}

.toggle-filters-btn {
  width: 100%;
  padding: 12px;
  background: var(--color-white);
  border: 1px solid var(--color-border-sharp);
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--border-radius);
}

.toggle-filters-btn:hover {
  background: var(--color-bg-secondary);
}

.filter-container form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.filter-container form.collapsed {
  height: 0;
  opacity: 0;
  margin: 0;
  padding: 0;
  pointer-events: none;
}

/* --- Form Elements (Sharp & Minimal) --- */
.form-group label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
  display: block;
}

.form-group select,
.form-group input[type="date"],
.date-display {
  width: 100%;
  padding: 12px;
  background-color: var(--color-bg-secondary);
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-primary);
  box-sizing: border-box;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.2s;
}

.form-group select:focus,
.form-group input:focus,
.date-display:focus {
  border-color: var(--color-border-sharp);
  outline: none;
  background-color: var(--color-white);
}

.submit-btn {
  width: 100%;
  padding: 16px;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  text-transform: uppercase;
  border: none;
  border-radius: var(--border-radius);
  cursor: pointer;
  margin-top: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}
.submit-btn:hover {
  opacity: 0.9;
}

/* --- Bento Grid Cards --- */
/* Mobile First: Stacking List/Grid */
.card-link {
  display: block;
  transition: transform 0.2s;
}

.card {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "title title"
    "info price"
    "tags tags";
  gap: 8px;
  
  background: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 16px;
  border-radius: var(--border-radius);
  position: relative;
}

.card:hover {
  border-color: var(--color-border-sharp);
}

/* Typography inside Card */
.card h2 {
  grid-area: title;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.user-info {
  display: contents; /* Let children participate in card grid */
}

.user-info-left {
  grid-area: title; /* Redundant but safeguards structure */
  display: flex;
  flex-direction: column;
}

.highlight-info.date-info {
  grid-area: info;
  font-family: monospace; /* Technical feel */
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.card p {
  margin: 0;
}

/* Price & Counts */
.card .price-info, 
.card p:has(.info-value) {
  grid-area: price;
  text-align: right;
  align-self: end;
}

.info-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

/* Tags/Badges */
.count-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 4px 8px;
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  border-radius: var(--border-radius);
  margin-top: 4px;
}

.lowest-price-badge {
  display: inline-block;
  background: var(--color-border-sharp); /* Black */
  color: var(--color-white);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 2px;
  margin-left: 6px;
}

/* --- Desktop Grid Layout --- */
@media (min-width: 768px) {
  .container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
  }
}

/* --- Checkbox Group (Golf Venues) --- */
.golf-venues-group label {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.checkbox-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-top: 8px;
  max-height: 200px;
  overflow-y: auto;
  padding: 8px;
  background: var(--color-bg-secondary);
  border-radius: var(--border-radius);
}

.venue-checkbox {
  display: flex;
  align-items: center;
  background: var(--color-white);
  padding: 8px;
  border-radius: 2px; /* Sharper */
  font-size: 0.9rem;
}

.venue-checkbox input {
  accent-color: var(--color-accent);
  margin-right: 8px;
}

/* --- Filter Badge & Results --- */
.results-count {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 4px;
}

.results-badge {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.sub-filter-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  font-size: 0.8rem;
  cursor: pointer;
  border-radius: 100px; /* Pill shape for secondary actions */
  transition: all 0.2s;
}

.sub-filter-btn:hover {
  border-color: var(--color-text-primary);
}

.sub-filter-btn.toggle.active {
  background: var(--color-border-sharp);
  color: var(--color-white);
  border-color: var(--color-border-sharp);
}

/* --- Empty State --- */
.empty-message {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  color: var(--color-text-secondary);
  border: 1px dashed var(--color-border);
  background: var(--color-bg-secondary);
}

/* --- Responsive Helpers --- */
.form-warp {
  display: flex;
  gap: 8px;
}
.region-group, .date-group {
  flex: 1;
}

/* --- Animation Helpers (Keep simple) --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.card-link {
  animation: fadeIn 0.4s ease forwards;
}

/* --- Filter Panel (Hidden) --- */
.filter-panel {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: flex-end; /* Bottom sheet on mobile */
}

.filter-panel-content {
  background: var(--color-white);
  width: 100%;
  max-width: 600px;
  padding: 24px;
  border-radius: 16px 16px 0 0;
  animation: slideUp 0.3s ease-out;
}

@media (min-width: 768px) {
  .filter-panel {
    align-items: center;
  }
  .filter-panel-content {
    border-radius: 16px;
  }
}

.filter-group h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.btn-group {
  display: flex;
  gap: 8px;
}

.filter-btn {
  flex: 1;
  padding: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  border-radius: var(--border-radius);
  cursor: pointer;
}

.filter-btn.active {
  background: var(--color-border-sharp);
  color: var(--color-white);
  border-color: var(--color-border-sharp);
}

.panel-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.panel-actions button {
  flex: 1;
  padding: 12px;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--color-border);
  background: var(--color-white);
}

#applyFiltersBtn {
  background: var(--color-border-sharp);
  color: var(--color-white);
  border-color: var(--color-border-sharp);
}