:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-2: #1f232c;
  --border: #2a2f3a;
  --text: #e8eaed;
  --text-dim: #9aa1ac;
  --accent: #4f8cff;
  --accent-dim: #2c4a8a;
  --success: #3ecf8e;
  --error: #ff5c5c;
  --radius: 10px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.app {
  max-width: 640px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.app-header {
  text-align: center;
  margin-bottom: 32px;
}

.app-header h1 {
  font-size: 1.5rem;
  margin: 0 0 8px;
}

.status {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

.status-idle {
  background: var(--surface-2);
  color: var(--text-dim);
}

.status-connecting {
  background: #3a3320;
  color: #f0c95c;
}

.status-connected {
  background: #1c3a2c;
  color: var(--success);
}

.status-error {
  background: #3a1f1f;
  color: var(--error);
}

.screen {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.pairing-panel,
.join-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}

.pairing-panel h2,
.join-panel h2 {
  margin: 0 0 16px;
  font-size: 1rem;
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.room-code {
  font-size: clamp(1.8rem, 9vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 20px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
}

.qr-canvas {
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  background: #fff;
  padding: 8px;
  max-width: 100%;
  height: auto;
}

.hint {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-top: 16px;
}

#join-form {
  display: flex;
  gap: 8px;
  justify-content: center;
}

#join-code-input {
  flex: 1;
  min-width: 0;
  max-width: 200px;
  padding: 10px 14px;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-align: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: "SF Mono", Menlo, Consolas, monospace;
}

#join-code-input:focus {
  outline: none;
  border-color: var(--accent);
}

button {
  padding: 10px 20px;
  font-size: 1rem;
  font-weight: 600;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background: #3d78e8;
}

button:disabled {
  background: var(--surface-2);
  color: var(--text-dim);
  cursor: not-allowed;
}

.error-text {
  color: var(--error);
  margin-top: 12px;
  font-size: 0.9rem;
}

.approval-request {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.approval-request p {
  margin: 0 0 12px;
  font-weight: 600;
}

.approval-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

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

.btn-accept:hover {
  background: #34b87d;
}

.btn-deny {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-deny:hover {
  background: var(--border);
}

.verify-code {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin: 20px 0;
  word-break: break-word;
}

#verify-waiting {
  margin-top: 16px;
}

.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-dim);
  transition: border-color 0.15s, background 0.15s;
}

.drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--surface-2);
}

.file-picker-label {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 20px;
  background: var(--accent);
  color: white;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

.file-picker-label:hover {
  background: #3d78e8;
}

.send-queue {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.send-queue h2 {
  margin: 0 0 12px;
  font-size: 0.85rem;
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.send-queue h2 .hint {
  text-transform: none;
  letter-spacing: normal;
  font-weight: 400;
}

.send-queue-list,
.transfer-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.transfer-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.send-queue-list .transfer-item {
  background: var(--surface-2);
}

.transfer-item.queued {
  opacity: 0.75;
}

.queue-item {
  cursor: grab;
}

.queue-item.dragging {
  opacity: 0.35;
}

.queue-item.drag-over-before {
  box-shadow: inset 0 2px 0 0 var(--accent);
}

.queue-item.drag-over-after {
  box-shadow: inset 0 -2px 0 0 var(--accent);
}

.transfer-item-info {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
  gap: 4px 12px;
}

.transfer-item-title {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  flex-shrink: 1;
  overflow: hidden;
}

.drag-handle {
  display: none;
  flex-shrink: 0;
  color: var(--text-dim);
  line-height: 1;
}

.queue-item .drag-handle {
  display: inline-block;
}

.transfer-item-name {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.transfer-item-meta {
  flex-shrink: 1;
  white-space: nowrap;
  color: var(--text-dim);
  font-size: 0.85rem;
  font-family: "SF Mono", Menlo, Consolas, monospace;
}

.transfer-item-detail {
  color: var(--text-dim);
  font-size: 0.78rem;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  overflow-wrap: break-word;
  margin-bottom: 10px;
  min-height: 1em;
}

.progress-track {
  height: 8px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.1s linear;
}

.transfer-item.done .progress-fill {
  background: var(--success);
}

.transfer-item.error .progress-fill {
  background: var(--error);
}

.transfer-item.error .transfer-item-meta {
  color: var(--error);
}

[hidden] {
  display: none !important;
}