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

:root {
  --bg: #0f1117;
  --bg2: #161b27;
  --bg3: #1e2535;
  --border: #2a3347;
  --accent: #e8380d;
  --accent2: #ff5c38;
  --green: #22c55e;
  --yellow: #f59e0b;
  --red: #ef4444;
  --blue: #3b82f6;
  --text: #e2e8f0;
  --text2: #94a3b8;
  --text3: #64748b;
  --radius: 10px;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

.app {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 16px 40px;
}

/* Header */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.header-sub {
  font-size: 12px;
  color: var(--text3);
  font-family: var(--font-mono);
}

/* Connect options */
.connect-options {
  margin-top: 12px;
  padding: 10px 12px;
  background: var(--bg3);
  border-radius: 7px;
  border: 1px solid var(--border);
}


.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text2);
  margin-bottom: 16px;
}

.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.card-title-row .card-title { margin-bottom: 0; }

/* Connect row */
.connect-row {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field-group label {
  font-size: 12px;
  color: var(--text2);
}

select, input[type="text"] {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 7px 10px;
  font-size: 13px;
  outline: none;
  transition: border-color .15s;
}

select:focus, input[type="text"]:focus {
  border-color: var(--accent);
}

select { cursor: pointer; }

/* Chip info */
.chip-info {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.chip-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text2);
}

.chip-badge svg { color: var(--accent); flex-shrink: 0; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 7px;
  border: none;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}

.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:not(:disabled):hover { background: var(--accent2); }

.btn-danger {
  background: transparent;
  border: 1px solid var(--red);
  color: var(--red);
}
.btn-danger:not(:disabled):hover { background: rgba(239,68,68,.1); }

.btn-secondary {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-secondary:not(:disabled):hover { border-color: var(--text3); }

.btn-flash {
  background: linear-gradient(135deg, #e8380d, #ff6b35);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  box-shadow: 0 0 20px rgba(232,56,13,.3);
}
.btn-flash:not(:disabled):hover {
  box-shadow: 0 0 28px rgba(232,56,13,.5);
  transform: translateY(-1px);
}

.btn-warning {
  background: transparent;
  border: 1px solid var(--yellow);
  color: var(--yellow);
}
.btn-warning:not(:disabled):hover { background: rgba(245,158,11,.1); }

.btn-ghost {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text2);
}
.btn-ghost:not(:disabled):hover { color: var(--text); border-color: var(--border); }

.btn-sm { padding: 5px 9px; font-size: 12px; }

/* File list */
#file-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; }

.file-row {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 10px;
}

.file-addr-wrap {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.addr-prefix {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text3);
}

.input-addr {
  width: 80px;
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 5px 7px;
}

.file-pick {
  flex: 1;
  cursor: pointer;
  min-width: 0;
}

.file-pick input[type="file"] { display: none; }

.file-name {
  display: block;
  background: var(--bg);
  border: 1px dashed var(--border);
  border-radius: 5px;
  padding: 5px 10px;
  font-size: 12px;
  color: var(--text3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: border-color .15s, color .15s;
}

.file-pick:hover .file-name {
  border-color: var(--accent);
  color: var(--text);
}

.file-name.has-file {
  color: var(--green);
  border-color: rgba(34,197,94,.3);
  border-style: solid;
}

/* Flash options */
.flash-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 14px 0;
  padding: 14px;
  background: var(--bg3);
  border-radius: 7px;
  border: 1px solid var(--border);
}

.advanced-toggle {
  font-size: 12px;
  color: var(--text3);
  cursor: pointer;
  user-select: none;
  list-style: none;
  padding: 4px 0;
}
.advanced-toggle:hover { color: var(--text2); }

.advanced-fields {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
}

.checkbox-group input[type="checkbox"] {
  width: 15px;
  height: 15px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Action row */
.action-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

/* Progress */
#progress-wrap {
  margin-top: 16px;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text2);
  margin-bottom: 6px;
}

.progress-bar-bg {
  background: var(--bg3);
  border-radius: 99px;
  height: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #e8380d, #ff6b35);
  border-radius: 99px;
  transition: width .2s ease;
  box-shadow: 0 0 8px rgba(232,56,13,.5);
}

/* Terminal */
.card-terminal { padding-bottom: 0; }

#terminal {
  background: #0a0d14;
  border-radius: 7px;
  border: 1px solid var(--border);
  padding: 12px 14px;
  height: 320px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: #c9d1d9;
  scroll-behavior: smooth;
}

#terminal::-webkit-scrollbar { width: 6px; }
#terminal::-webkit-scrollbar-track { background: transparent; }
#terminal::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.t-line { display: block; }
.t-info  { color: #58a6ff; }
.t-ok    { color: #3fb950; }
.t-warn  { color: #d29922; }
.t-err   { color: #f85149; }
.t-dim   { color: var(--text3); }
.t-data  { color: #c9d1d9; }

/* Footer */
footer {
  text-align: center;
  padding: 20px 0;
  font-size: 12px;
  color: var(--text3);
}

footer a { color: var(--text2); text-decoration: none; }
footer a:hover { color: var(--text); }

.hidden { display: none !important; }

/* Состояние подключения */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text3);
  margin-right: 6px;
  transition: background .3s;
}
.status-dot.connected { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-dot.connecting { background: var(--yellow); animation: pulse 1s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

@media (max-width: 600px) {
  .connect-row { flex-direction: column; align-items: stretch; }
  .action-row { flex-direction: column; }
  .btn-flash { width: 100%; justify-content: center; }
  .flash-options { flex-direction: column; }
}

/* Drop zone */
.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 24px;
  margin-bottom: 12px;
  border: 2px dashed var(--border);
  border-radius: 8px;
  color: var(--text3);
  cursor: pointer;
  transition: all .2s;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(232,56,13,.06);
  color: var(--text2);
}
.drop-zone svg { opacity: 0.4; transition: opacity .2s; }
.drop-zone:hover svg, .drop-zone.drag-over svg { opacity: 1; color: var(--accent); }
.drop-zone span { font-size: 13px; }
.drop-hint { font-size: 11px !important; color: var(--text3) !important; }