.app {
  width: 420px;
  max-width: 100%;
  margin: 0 auto;
  padding: 32px 16px 64px;
  box-sizing: border-box;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */

.app h1 {
  font-family: var(--mono);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  text-align: center;
  margin: 0 0 32px;
  color: var(--heading);
}

.app h1::before {
  content: '> ';
  color: var(--muted);
  font-weight: 400;
}

.dot { color: var(--accent); }

/* ── Error banner ────────────────────────────────────────────────────────────── */

.error-banner {
  font-family: var(--mono);
  font-size: 13px;
  color: #ff6b6b;
  border: 1px solid rgba(255,107,107,0.25);
  border-radius: 6px;
  padding: 10px 14px;
  margin-bottom: 16px;
  background: rgba(255,107,107,0.06);
}

/* ── Card ────────────────────────────────────────────────────────────────────── */

.card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  background: var(--bg-alt);
  box-shadow: var(--shadow);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ── Buttons ─────────────────────────────────────────────────────────────────── */

.btn {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: 0.01em;
}

.btn:hover {
  border-color: var(--accent-border);
  color: var(--heading);
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  font-weight: 700;
}

.btn-primary:hover {
  background: #00ff88;
  border-color: #00ff88;
  color: #000;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-danger {
  color: #ff6b6b;
  border-color: rgba(255,107,107,0.2);
}

.btn-danger:hover {
  border-color: #ff6b6b;
  background: rgba(255,107,107,0.08);
}

.btn-link {
  background: none;
  border: none;
  padding: 0;
  font-family: var(--mono);
  font-size: inherit;
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.btn-row {
  display: flex;
  gap: 8px;
}

.btn-row .btn { flex: 1; }

/* ── Inputs ──────────────────────────────────────────────────────────────────── */

.text-input {
  font-family: var(--mono);
  font-size: 13px;
  flex: 1;
  min-width: 0;
  padding: 10px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--heading);
}

.text-input::placeholder { color: var(--muted); }

.text-input:focus {
  outline: none;
  border-color: var(--accent-border);
}

.join-row {
  display: flex;
  gap: 8px;
}

/* ── Divider ─────────────────────────────────────────────────────────────────── */

.divider {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Mode toggle ─────────────────────────────────────────────────────────────── */

.mode-toggle {
  display: flex;
  gap: 8px;
  margin-bottom: 4px;
}

.mode-toggle .btn { flex: 1; }

/* ── Known devices list ──────────────────────────────────────────────────────── */

.empty-state {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.known-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.known-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-alt);
  transition: border-color 0.15s;
}

.known-row:hover { border-color: var(--accent-border); }

.known-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.known-label {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--heading);
}

.known-label::before {
  content: '@ ';
  color: var(--accent);
  font-weight: 400;
}

.peer-id {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}

.known-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

/* ── QR / hosting card ───────────────────────────────────────────────────────── */

.qr-card {
  text-align: center;
}

.qr-hint {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 12px;
}

.qr-hint::before { content: '// '; }

.qr-card img {
  width: 200px;
  height: 200px;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 16px;
  image-rendering: pixelated;
}

/* ── Connecting / status ─────────────────────────────────────────────────────── */

.connecting-card {
  text-align: center;
  padding: 40px 20px;
}

.status-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
}

.spinner {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid rgba(0,232,122,0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

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

/* ── Connected / peer info ───────────────────────────────────────────────────── */

.peer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.peer-badge {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid;
  letter-spacing: 0.03em;
}

.peer-badge.verified {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-dim);
}

.peer-badge.unverified {
  color: #f59e0b;
  border-color: rgba(245,158,11,0.25);
  background: rgba(245,158,11,0.08);
}

/* ── Drop zone ───────────────────────────────────────────────────────────────── */

.dropzone {
  position: relative;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 24px 16px;
  text-align: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone::before {
  content: '+ ';
  color: var(--accent);
}

.dropzone input[type='file'] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.dropzone:hover {
  border-color: var(--accent-border);
  background: var(--accent-dim);
  color: var(--heading);
}

/* ── Transfer progress ───────────────────────────────────────────────────────── */

.transfer { }

.transfer-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.pct { color: var(--accent); }

progress.bar {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border: none;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
}

progress.bar::-webkit-progress-bar {
  background: var(--border);
  border-radius: 999px;
}

progress.bar::-webkit-progress-value {
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.1s ease;
  box-shadow: 0 0 8px rgba(0,232,122,0.5);
}

progress.bar::-moz-progress-bar {
  background: var(--accent);
  border-radius: 999px;
}

/* ── File lists ──────────────────────────────────────────────────────────────── */

.file-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.file-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text);
  background: var(--bg);
}

.file-row a {
  color: var(--accent);
  text-decoration: none;
}

.file-row a:hover { text-decoration: underline; }

.file-size {
  color: var(--muted);
  margin-left: auto;
  font-size: 11px;
}

/* ── Incoming offer card ─────────────────────────────────────────────────────── */

.offer-card {
  border-color: var(--accent-border);
  background: linear-gradient(135deg, rgba(0,232,122,0.04) 0%, var(--bg-alt) 100%);
}

.offer-card .btn-row { margin-top: 4px; }

.offer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.offer-name {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--heading);
}

/* ── QR scanner overlay ──────────────────────────────────────────────────────── */

.scanner-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
  backdrop-filter: blur(4px);
}

.scanner-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  width: 100%;
  max-width: 360px;
  box-shadow: var(--shadow);
}

.scanner-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--heading);
}

.scanner-video {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  aspect-ratio: 1;
  object-fit: cover;
  background: #000;
}

.scanner-error {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  padding: 24px 0;
}