/* --- CSS VARIABLES (For consistent theming) --- */
:root {
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #10b981;
  --success-hover: #059669;
  --warning: #f59e0b;
  --warning-hover: #d97706;

  --bg-color: #f3f4f6;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border-color: #e5e7eb;
  --input-bg: #f9fafb;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md:
    0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --radius: 10px;
}

/* --- RESET & TYPOGRAPHY --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  padding: 30px 20px;
  line-height: 1.5;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
}

/* --- HEADERS --- */
.app-header {
  text-align: center;
  margin-bottom: 30px;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 5px;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1rem;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: #111827;
  display: flex;
  align-items: center;
}

/* --- LAYOUT & CARDS --- */
.grid-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.card {
  background: var(--card-bg);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

/* --- FORMS & INPUTS --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.input-row {
  display: flex;
  gap: 12px;
}

.input-wrapper {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
  background-color: var(--input-bg);
  transition: all 0.2s ease;
}

input:focus {
  outline: none;
  border-color: var(--primary);
  background-color: #fff;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2); /* Focus ring */
}

/* --- BUTTONS --- */
button {
  padding: 10px 16px;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

button:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--primary);
  color: white;
  width: 100%;
  margin-top: 8px;
}

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

.btn-danger {
  background-color: var(--danger);
  color: white;
  padding: 6px 12px;
  font-size: 0.85rem;
}

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

.btn-clear {
  background-color: var(--warning);
  color: white;
  padding: 8px 16px;
  font-size: 0.9rem;
}

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

.btn-success {
  background-color: var(--success);
  color: white;
  padding: 8px 16px;
  font-size: 0.9rem;
}

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

/* --- ACTIVE RULES LIST --- */
.active-rules {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px dashed var(--border-color);
}

.active-rules h3 {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  text-transform: uppercase;
}

#ruleList {
  list-style: none;
}

#ruleList li {
  background: var(--input-bg);
  padding: 10px 14px;
  margin-bottom: 8px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
}

/* --- TABLE SECTION --- */
.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.table-header h2 {
  margin-bottom: 0;
}

.header-buttons {
  display: flex;
  gap: 10px;
}

/* Analytics Banner */
.analytics-banner {
  display: flex;
  justify-content: space-between;
  background: linear-gradient(135deg, #1e293b, #334155);
  color: white;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-md);
}

.stat-box {
  text-align: center;
  flex: 1;
}

.stat-box:not(:last-child) {
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-box h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
  color: #94a3b8;
}

.stat-box p {
  font-size: 2rem;
  font-weight: 700;
  margin: 0;
  color: #60a5fa;
}

/* Search Container */
.search-container {
  margin-bottom: 16px;
}

#searchInput {
  padding-left: 16px; /* Space for the emoji/icon */
}

/* Table Design */
.table-responsive {
  overflow-x: auto; /* Allows scrolling on small devices */
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: #fff;
}

th,
td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  background-color: var(--input-bg);
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

tbody tr {
  transition: background-color 0.1s ease;
}

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

tbody tr:last-child td {
  border-bottom: none;
}

/* Sorting */
.sortable {
  cursor: pointer;
  user-select: none;
}

.sortable:hover {
  background-color: #e2e8f0;
  color: #0f172a;
}

.sort-icon {
  font-size: 0.9rem;
  color: #cbd5e1;
  margin-left: 4px;
}

/* Empty State Styles */
.empty-state {
  text-align: center;
  padding: 40px 20px !important; /* Overrides default td padding */
  color: var(--text-muted);
  font-style: italic;
  background-color: var(--input-bg);
}

/* --- RESPONSIVE DESIGN --- */
@media (max-width: 768px) {
  .grid-layout {
    grid-template-columns: 1fr;
  }

  .table-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }

  .header-buttons {
    width: 100%;
  }

  .header-buttons button {
    flex: 1;
  }

  .analytics-banner {
    flex-direction: column;
    gap: 20px;
  }

  .stat-box:not(:last-child) {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 15px;
  }
}