/* Minimalist and Functional stylesheet for URL Shortener */

:root {
  --bg-color: #f1f5f9;
  --text-color: #0f172a;
  --border-color: #cbd5e1;
  --card-bg: #ffffff;
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --success-color: #16a34a;
  --danger-color: #dc2626;
  --muted-text: #64748b;
  --table-border: #e2e8f0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  line-height: 1.5;
}

header, footer {
  padding: 1rem 2rem;
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  font-size: 1.25rem;
  margin: 0;
}

header a, footer a {
  text-decoration: none;
  color: var(--primary-color);
}

.container {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 0 1rem;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.15rem;
  margin-top: 0;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--table-border);
  padding-bottom: 0.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
  font-size: 0.9rem;
}

.form-control {
  width: 100%;
  padding: 0.5rem;
  box-sizing: border-box;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 1rem;
}

.form-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.form-row .form-group {
  flex: 1;
  min-width: 200px;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  background-color: var(--primary-color);
  color: white;
}

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

.btn-secondary {
  background-color: var(--muted-text);
}
.btn-secondary:hover {
  background-color: #475569;
}

.btn-success {
  background-color: var(--success-color);
}
.btn-success:hover {
  background-color: #15803d;
}

.btn-danger {
  background-color: var(--danger-color);
}
.btn-danger:hover {
  background-color: #b91c1c;
}

.alert {
  padding: 0.75rem 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.alert-success {
  background-color: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.alert-danger {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-info {
  background-color: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

/* Grid layout for Dashboard stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-box {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1rem;
  text-align: center;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: bold;
  color: var(--primary-color);
  margin-top: 0.25rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--muted-text);
  text-transform: uppercase;
}

/* Table styling for link index */
.table-responsive {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

th, td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--table-border);
  text-align: left;
}

th {
  background-color: #f8fafc;
  font-weight: 600;
}

tr:hover {
  background-color: #f8fafc;
}

/* Modal setup for link edits */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.modal-content {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: 6px;
  max-width: 500px;
  width: 90%;
  border: 1px solid var(--border-color);
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  font-size: 0.8rem;
  border-radius: 12px;
  font-weight: 600;
}

.badge-active {
  background-color: #dcfce7;
  color: #166534;
}

.badge-inactive {
  background-color: #fee2e2;
  color: #991b1b;
}

/* Alignment utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.margin-top { margin-top: 1rem; }
.margin-bottom { margin-bottom: 1rem; }

/* Responsive adjustments */
@media (max-width: 768px) {
  header, footer {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}