/* Patch Tuesday Calculator - Simplified CSS */

:root {
  --background: #1a1a2e;
  --foreground: #eaeaea;
  --card: #25253d;
  --card-foreground: #e0e0e0;
  --primary: #4f6af0;
  --primary-foreground: #ffffff;
  --secondary: #35355a;
  --secondary-foreground: #d0d0d0;
  --muted-foreground: #888;
  --accent: #4ecdc4;
  --accent-foreground: #1a1a2e;
  --border: #3a3a5c;
  --radius: 0.5rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--background);
  color: var(--foreground);
  min-height: 100vh;
  padding: 1rem;
}

.container {
  max-width: 900px;
  margin: 0 auto;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 1.75rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

header h1 svg {
  width: 2rem;
  height: 2rem;
  color: var(--primary);
}

header p {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

/* Grid Layout */
.grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Card */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.card-header svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--accent);
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--card-foreground);
}

/* Date List */
.date-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.date-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 0.75rem;
  border-radius: calc(var(--radius) - 2px);
  transition: background-color 0.15s;
}

.date-item:hover {
  background: var(--secondary);
}

.date-item.highlight {
  background: rgba(79, 106, 240, 0.15);
  border: 1px solid rgba(79, 106, 240, 0.3);
}

.date-item .date {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875rem;
}

/* Badge */
.badge {
  display: inline-block;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: calc(var(--radius) - 2px);
  background: var(--secondary);
  color: var(--secondary-foreground);
}

.badge.primary {
  background: var(--primary);
  color: var(--primary-foreground);
}

.badge.accent {
  background: var(--accent);
  color: var(--accent-foreground);
}

/* Form Controls */
.form-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-field label {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.form-field select {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  color: var(--card-foreground);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  background-size: 1rem;
}

.form-field select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(79, 106, 240, 0.2);
}

/* Result Box */
.result-box {
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  padding: 1.25rem;
}

.result-box .label {
  font-size: 0.875rem;
  color: var(--muted-foreground);
  margin-bottom: 0.5rem;
}

.result-box .value {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 1.25rem;
  color: var(--foreground);
  margin-bottom: 0.75rem;
}

/* Footer */
footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted-foreground);
  margin-top: 2rem;
  padding-top: 1rem;
}

footer .disclaimer {
  margin-top: 0.5rem;
  font-size: 0.7rem;
  opacity: 0.7;
  font-style: italic;
}