:root {
  color-scheme: dark;
  --bg: #111217;
  --panel: #1c1e26;
  --panel-alt: #232530;
  --accent: #4c7dff;
  --accent-hover: #6a92ff;
  --danger: #ef5350;
  --text: #f5f7ff;
  --text-dim: #a9acc4;
  --border: #2e3039;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
  font-family: "Inter", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #1a1c24 0%, #0e1015 60%);
  min-height: 100vh;
  color: var(--text);
}

.hidden {
  display: none !important;
}

.loading {
  display: grid;
  place-items: center;
  min-height: 100vh;
  font-size: 1.4rem;
  color: var(--text-dim);
}

.app {
  padding: 32px clamp(20px, 4vw, 60px);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.app__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.app__header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  letter-spacing: 0.08em;
}

.app__content {
  display: grid;
  grid-template-columns: minmax(260px, 320px) 1fr;
  gap: 28px;
}

@media (max-width: 980px) {
  .app__content {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: linear-gradient(160deg, rgba(44, 47, 61, 0.7), rgba(28, 32, 44, 0.8));
  border: 1px solid rgba(134, 142, 174, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  backdrop-filter: blur(24px);
}

.panel--sidebar {
  min-height: 520px;
}

.panel__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.panel__header h2 {
  margin: 0;
  font-size: 1.3rem;
}

.panel__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.list__item {
  background: rgba(33, 36, 46, 0.85);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform 0.15s ease, background 0.15s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.list__item:hover {
  background: rgba(60, 85, 140, 0.35);
  transform: translateY(-2px);
}

.list__item--active {
  border: 1px solid var(--accent);
  background: rgba(76, 125, 255, 0.25);
}

.list__label {
  margin: 0;
  font-weight: 600;
}

.list__meta {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.btn {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s ease, transform 0.2s ease, border 0.2s ease;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.09);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.35;
  pointer-events: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), #728dff);
  border: none;
  color: white;
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), #8aa3ff);
}

.btn--danger {
  background: linear-gradient(135deg, rgba(239, 83, 80, 0.95), rgba(244, 114, 116, 0.95));
  border: none;
}

.btn--icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  line-height: 1;
  padding: 0;
}

.btn--icon-primary {
  background: linear-gradient(135deg, var(--accent), #5f86ff);
  border: none;
  color: white;
  font-size: 1.6rem;
}

.btn--icon-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), #7a9bff);
}

.dual-field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

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

.list__actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  display: grid;
  place-items: center;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.06);
  transition: transform 0.2s ease, background 0.2s ease;
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}
.fixture-table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(33, 36, 46, 0.75);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.fixture-table thead {
  background: rgba(44, 49, 64, 0.9);
}

.fixture-table th,
.fixture-table td {
  padding: 14px 18px;
  text-align: left;
  font-size: 0.95rem;
}

.fixture-table th {
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.fixture-table__row {
  cursor: pointer;
  transition: background 0.2s ease;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.fixture-table__row:last-child {
  border-bottom: none;
}

.fixture-table__row:hover {
  background: rgba(76, 125, 255, 0.18);
}

.fixture-table__row--active {
  background: rgba(76, 125, 255, 0.3);
}

.fixture-table__index {
  width: 56px;
  color: var(--text-dim);
  font-weight: 600;
}

.fixture-table__address {
  font-family: "JetBrains Mono", "Consolas", monospace;
  font-weight: 600;
  color: var(--accent-hover);
}

.modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.channel-legend {
  display: flex;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.channel-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.channel-legend__item::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.channel-legend__item--used::before {
  background: linear-gradient(135deg, rgba(76, 125, 255, 0.8), rgba(67, 97, 255, 0.8));
  border: none;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(16, minmax(48px, 1fr));
  gap: 6px;
  max-height: 60vh;
  overflow: auto;
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  background: rgba(24, 26, 33, 0.8);
}

.channel-cell {
  padding: 10px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.channel-cell--active {
  background: linear-gradient(135deg, rgba(76, 125, 255, 0.85), rgba(67, 97, 255, 0.85));
  color: white;
  border: none;
  font-weight: 600;
}

.icon-btn:hover {
  transform: translateY(-1px);
}

.icon-btn--edit {
  background: rgba(71, 123, 255, 0.25);
  border: 1px solid rgba(71, 123, 255, 0.4);
}

.icon-btn--edit svg {
  fill: #6f92ff;
}

.icon-btn--trash {
  background: rgba(239, 83, 80, 0.25);
  border: 1px solid rgba(239, 83, 80, 0.4);
}

.icon-btn--trash svg {
  fill: #ef5350;
}

.fixture-list {
  display: grid;
  gap: 16px;
}

.fixture-card {
  background: rgba(33, 36, 46, 0.7);
  border-radius: var(--radius-md);
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.fixture-card__title {
  margin: 0;
  font-weight: 600;
  font-size: 1rem;
}

.fixture-card__subtitle {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.field input {
  background: rgba(26, 28, 36, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--text);
  font-size: 1rem;
}

.field select {
  background: rgba(26, 28, 36, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text);
  font-size: 0.95rem;
}

.field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(76, 125, 255, 0.18);
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(76, 125, 255, 0.18);
}

.field--inline {
  flex-direction: row;
  align-items: center;
  gap: 16px;
}

.field--inline input {
  width: 120px;
}

.field--inline select {
  min-width: 200px;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(9, 11, 18, 0.7);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 100;
}

.modal__content {
  background: var(--panel);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: min(420px, 90vw);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.modal__content h3 {
  margin: 0;
  font-size: 1.4rem;
}

.modal__content--wide {
  width: min(760px, 94vw);
}

.modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 14px;
}

.fixture-selector {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.selector-column {
  background: rgba(24, 26, 33, 0.8);
  border-radius: var(--radius-md);
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  min-height: 240px;
}

.selector-column h4 {
  margin: 0 0 12px;
  font-size: 1rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.selector-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 240px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.selector-item {
  padding: 12px;
  border-radius: var(--radius-md);
  background: rgba(36, 40, 52, 0.9);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border 0.15s ease, transform 0.1s ease;
}

.selector-item:hover {
  background: rgba(76, 125, 255, 0.25);
  border-color: rgba(76, 125, 255, 0.6);
  transform: translateX(4px);
}

.selector-item--active {
  background: linear-gradient(135deg, rgba(76, 125, 255, 0.75), rgba(67, 97, 255, 0.75));
  border-color: transparent;
}

.selector-item__title {
  margin: 0;
  font-weight: 600;
}

.selector-item__meta {
  margin: 4px 0 0;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(30, 32, 40, 0.94);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  z-index: 150;
}

.toast--visible {
  opacity: 1;
  transform: translateY(0);
}