:root {
  --bg: #0b0d12;
  --bg-elevated: #12151c;
  --surface: #161a23;
  --surface-hover: #1b202b;
  --border: #232833;
  --border-soft: #1c212b;
  --text: #e6e9ef;
  --text-dim: #8b93a3;
  --text-faint: #5a6270;
  --accent: #35e0c1;
  --accent-dim: #1f9c86;
  --accent-glow: rgba(53, 224, 193, 0.18);
  --danger: #f2685c;
  --warn: #f2b155;
  --radius: 14px;
  --radius-sm: 9px;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(53, 224, 193, 0.06), transparent),
    var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0 20px;
}

/* Header */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 20px;
  flex-wrap: wrap;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px 2px var(--accent-glow);
}

.brand h1 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--text);
}

.tabs {
  display: flex;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 4px;
}

.tab-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-size: 13.5px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 7px;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  background: var(--accent);
  color: #05201a;
}

/* Main / panels */

main {
  flex: 1;
  padding-bottom: 32px;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fade-in 0.18s ease;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(3px); }
  to { opacity: 1; transform: translateY(0); }
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card + .card {
  margin-top: 20px;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.field-grow {
  flex: 1;
}

.field label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.field-optional {
  text-transform: none;
  font-weight: 400;
  letter-spacing: normal;
  color: var(--text-faint);
}

.field-hint {
  margin: 0;
  font-size: 12.5px;
  color: var(--text-faint);
}

textarea,
select,
input[type="file"],
input[type="text"] {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  transition: border-color 0.15s ease, background 0.15s ease;
}

textarea::placeholder,
input[type="text"]::placeholder {
  color: var(--text-faint);
}

textarea:focus,
select:focus,
input[type="file"]:focus,
input[type="text"]:focus {
  outline: none;
  border-color: var(--accent-dim);
  background: var(--surface-hover);
}

select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-dim) 50%),
    linear-gradient(135deg, var(--text-dim) 50%, transparent 50%);
  background-position: calc(100% - 16px) center, calc(100% - 11px) center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 32px;
  cursor: pointer;
}

input[type="file"] {
  cursor: pointer;
  font-size: 13px;
  color: var(--text-dim);
}

input[type="file"]::file-selector-button {
  background: var(--surface-hover);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 7px;
  padding: 6px 12px;
  font-size: 12.5px;
  font-weight: 500;
  margin-right: 10px;
  cursor: pointer;
}

.field-row {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  margin-bottom: 16px;
}

.field-row .field {
  margin-bottom: 0;
}

/* Buttons */

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

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

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #05201a;
}

.btn-primary:hover:not(:disabled) {
  background: #4ee9cb;
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--border);
}

.btn-ghost:hover {
  background: var(--accent-glow);
}

.btn-record {
  border-color: var(--border);
}

.btn-record .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--danger);
  display: inline-block;
}

.btn-record.recording {
  border-color: var(--danger);
  color: var(--danger);
}

.btn-record.recording .dot {
  animation: pulse 1.1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.8); }
}

.spinner {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 2px solid rgba(5, 32, 26, 0.35);
  border-top-color: #05201a;
  animation: spin 0.7s linear infinite;
}

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

.hidden {
  display: none !important;
}

/* Divider */

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 18px 0;
  color: var(--text-faint);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

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

.record-row {
  align-items: center;
}

.record-time {
  color: var(--text-dim);
  font-variant-numeric: tabular-nums;
  font-size: 13.5px;
}

/* Status / results */

.status {
  min-height: 20px;
  font-size: 13px;
  margin-top: 4px;
  margin-bottom: 4px;
  color: var(--text-dim);
}

.status.loading {
  color: var(--text-dim);
}

.status.error {
  color: var(--danger);
}

.status.success {
  color: var(--accent);
}

.result {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.log-wrap {
  margin-top: 12px;
}

.log {
  margin: 0;
  max-height: 260px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-dim);
  white-space: pre-wrap;
  word-break: break-word;
}

audio {
  width: 100%;
  height: 38px;
  accent-color: var(--accent);
}

.detection {
  font-size: 15px;
  font-weight: 600;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
}

.detection.detected {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: var(--accent-glow);
}

.detection.not-detected {
  color: var(--text-dim);
}

.confidence-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.confidence-label {
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--text-dim);
}

.confidence-bar {
  height: 8px;
  border-radius: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
}

.confidence-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  transition: width 0.3s ease;
}

/* Footer */

.app-footer {
  display: flex;
  gap: 20px;
  padding: 16px 0 24px;
  border-top: 1px solid var(--border-soft);
  color: var(--text-faint);
  font-size: 12.5px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 7px;
}

.dot-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-faint);
}

.dot-indicator.online {
  background: var(--accent);
  box-shadow: 0 0 6px 1px var(--accent-glow);
}

.dot-indicator.offline {
  background: var(--danger);
}

@media (max-width: 520px) {
  .field-row {
    flex-wrap: wrap;
  }
}