@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");

:root {
  /* Modern Dark Theme Palette */
  --bg-primary: #0f172a; /* Deep Blue/Slate */
  --bg-secondary: #1e293b; /* Lighter Slate */
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-hover: #334155;

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-primary: #8b5cf6; /* Violet */
  --accent-secondary: #06b6d4; /* Cyan */
  --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 100%);

  /* Light Mode Palette */
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --accent-primary: #6366f1; /* Indigo */
  --accent-secondary: #8b5cf6; /* Violet */
  --success: #10b981;
  --error: #ef4444;
  --border-color: #e5e7eb;
  --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  padding: 2rem;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Header */
.header {
  display: flex;
  gap: 40px;
  justify-content: space-between;
  align-items: center;
}

.header > div {
  flex: 1;
}

.header-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.header h1 {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0rem;
  letter-spacing: -0.02em;
}

.header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Controls Section */
.controls {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: flex-end;
  justify-content: space-between;
}

.control-group {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.control-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-item label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

select {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 0.625rem 2.5rem 0.625rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.95rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7280' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  min-width: 160px;
  transition: all 0.2s;
}

select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.control-buttons {
  display: flex;
  gap: 1rem;
}

.btn {
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  color: white;
  box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 8px -1px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: #f3f4f6;
  border-color: #d1d5db;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Stats Grid */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  grid-template-columns: repeat(2, 1fr);
}

.stat-item {
  background: var(--bg-secondary);
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: transform 0.2s;
}

.stat-item:hover {
  transform: translateY(-2px);
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Progress Bar */
.progress-bar {
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  width: 0%;
  transition: width 0.3s ease;
}

/* Filter Chips */
.filter-container {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  padding: 0.5rem 0;
}

.filter-checkbox {
  cursor: pointer;
  position: relative;
}

.filter-checkbox input {
  display: none; /* Hide default checkbox */
}

.filter-checkbox .label-text {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 2rem;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  user-select: none;
}

.filter-checkbox input:checked + .label-text {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  box-shadow: 0 2px 4px rgba(99, 102, 241, 0.3);
}

.filter-checkbox:hover .label-text {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.filter-checkbox input:checked:hover .label-text {
  color: white;
  background: var(--accent-secondary);
  border-color: var(--accent-secondary);
}

/* Results Grid */
.results {
  min-height: 200px;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* 2 items per row */
  gap: 1rem;
}

@media (max-width: 768px) {
  .results-grid {
    grid-template-columns: 1fr; /* 1 item per row on mobile */
  }
}

.server-item {
  background: var(--bg-secondary);
  border-radius: 0.75rem;
  padding: 0.875rem 1rem;
  border: none;
  transition: transform 120ms ease, box-shadow 150ms ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.server-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.server-item.valid {
  background-color: #dcfce7;
  border-left: 5px solid #22c55e;
}

.server-item.invalid {
  background-color: #fee2e2;
  border-left: 5px solid #ef4444;
}

.server-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.server-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
  min-width: 0;
}

.server-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: #1f2937;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.01em;
}

.server-meta {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: #4b5563;
  white-space: nowrap;
  flex-shrink: 0;
}

.server-link {
  display: block;
  color: #2563eb;
  text-decoration: none;
  font-size: 0.75rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 500;
  transition: color 0.2s;
}

.server-link:hover {
  text-decoration: underline;
  color: #1d4ed8;
}

.server-detail-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Loading State */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 300px;
  color: var(--text-muted);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--bg-secondary);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 1rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .header h1 {
    font-size: 2.5rem;
  }

  .control-group {
    grid-template-columns: 1fr;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .stats {
    grid-template-columns: 1fr;
  }

  .control-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}