:root {
  --bg-color: #080a0f;
  --card-bg: #0f141c;
  --card-border: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #0284c7;
  --accent-cyan: #00f0ff;
  --accent-purple: #a855f7;
  --accent-glow: rgba(0, 240, 255, 0.15);
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --input-bg: #141b26;
  --input-border: #243042;
  --input-border-focus: #00f0ff;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-color);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 100%, rgba(168, 85, 247, 0.06) 0%, transparent 40%);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 32px 16px;
  -webkit-font-smoothing: antialiased;
}

.config-wrapper {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
}

.config-header {
  text-align: center;
  margin-bottom: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.brand-logo {
  border-radius: 10px;
  filter: drop-shadow(0 0 16px rgba(0, 240, 255, 0.35));
}

.brand-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.brand-badge {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-transform: uppercase;
}

.brand-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

/* 3-Preset Tabs */
.preset-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  background-color: #111722;
  border: 1px solid var(--card-border);
  padding: 6px;
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
}

.preset-tab {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  padding: 10px 8px;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.preset-tab:hover {
  background-color: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

.preset-tab.active {
  background: linear-gradient(180deg, #1e293b 0%, #172030 100%);
  border-color: #334155;
  color: var(--text-primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.preset-tab.active[data-preset="usenet"] {
  border-color: rgba(245, 158, 11, 0.4);
}

.preset-tab.active[data-preset="torrents"] {
  border-color: rgba(0, 240, 255, 0.4);
}

.preset-tab.active[data-preset="hybrid"] {
  border-color: rgba(168, 85, 247, 0.4);
}

.tab-icon {
  font-size: 18px;
}

.tab-title {
  font-size: 12px;
  font-weight: 700;
}

.tab-tag {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
}

.preset-tab.active .tab-tag {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.12);
}

/* Card & Sections */
.card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
}

.addon-preview-banner {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.12), rgba(168, 85, 247, 0.12));
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.preview-icon {
  font-size: 24px;
  background-color: rgba(0, 0, 0, 0.3);
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.preview-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

.section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toggle-control {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
}

.toggle-control:hover {
  border-color: #334155;
  background-color: #16202e;
}

.toggle-control input {
  display: none;
}

.toggle-switch {
  width: 40px;
  height: 22px;
  background-color: #2b394f;
  border-radius: 20px;
  position: relative;
  transition: var(--transition);
  flex-shrink: 0;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background-color: #ffffff;
  border-radius: 50%;
  transition: var(--transition);
}

.toggle-control input:checked + .toggle-switch {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
}

.toggle-control input:checked + .toggle-switch::after {
  transform: translateX(18px);
}

.toggle-label {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toggle-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.toggle-desc {
  font-size: 11px;
  color: var(--text-secondary);
}

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

.pill-checkbox {
  cursor: pointer;
  flex: 1 1 auto;
  min-width: calc(33.333% - 6px);
}

.pill-checkbox input {
  display: none;
}

.pill-content {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 9px 12px;
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  user-select: none;
}

.pill-checkbox:hover .pill-content {
  border-color: #334155;
  color: var(--text-primary);
  background-color: #16202e;
}

.pill-checkbox input:checked + .pill-content {
  background: rgba(0, 240, 255, 0.09);
  border-color: var(--accent-cyan);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.15);
}

.pill-checkbox input#resAll:checked + .pill-content {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(168, 85, 247, 0.15));
  border-color: var(--accent-purple);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.2);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.select-input, .text-input {
  width: 100%;
  padding: 10px 14px;
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.select-input:focus, .text-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.input-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.action-footer {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 8px;
  border-top: 1px solid var(--card-border);
}

.mode-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-cyan);
}

.btn-group {
  display: flex;
  gap: 10px;
}

.btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-icon {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1 0%, #075985 100%);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background-color: #1e293b;
  border-color: #334155;
}

.btn.btn-success {
  background-color: var(--success) !important;
  color: #ffffff !important;
}

@media (max-width: 480px) {
  .btn-group {
    flex-direction: column;
  }
}