* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  background: #0f172a;
  color: #e5e7eb;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  background: #020617;
  border-bottom: 1px solid #1f2937;
}

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

.logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: #f97316;
}

.brand-name {
  font-weight: 700;
  letter-spacing: 0.03em;
}

.brand-sub {
  font-size: 12px;
  color: #9ca3af;
}

.container {
  flex: 1;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 16px;
}

.tool-selector {
  background: #020617;
  border-radius: 16px;
  padding: 16px;
  border: 1px solid #1e293b;
  margin-bottom: 16px;
}

.tool-selector h1 {
  font-size: 20px;
  margin-bottom: 8px;
}

.tool-selector select {
  width: 100%;
  padding: 10px 12px;
  margin-top: 8px;
  border-radius: 10px;
  border: 1px solid #374151;
  background: #020617;
  color: #e5e7eb;
}

.tool-selector .hint {
  font-size: 12px;
  color: #9ca3af;
  margin-top: 8px;
}

.tool-panel {
  display: none;
  background: #020617;
  border-radius: 16px;
  padding: 16px;
  border: 1px solid #1e293b;
  margin-bottom: 16px;
}

.tool-panel.active {
  display: block;
}

.tool-panel h2 {
  font-size: 18px;
  margin-bottom: 6px;
}

.tool-panel p {
  font-size: 13px;
  color: #9ca3af;
  margin-bottom: 10px;
}

.tool-panel input[type="file"],
.tool-panel input[type="text"],
.tool-panel select {
  width: 100%;
  margin: 6px 0 10px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid #374151;
  background: #020617;
  color: #e5e7eb;
  font-size: 13px;
}

.primary-btn {
  display: inline-block;
  margin-top: 6px;
  padding: 10px 16px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, #f97316, #ea580c);
  color: #0b1120;
  font-weight: 600;
  cursor: pointer;
  font-size: 14px;
}

.primary-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.status {
  font-size: 12px;
  margin-top: 8px;
  min-height: 16px;
}

.status.error {
  color: #fca5a5;
}

.status.success {
  color: #bbf7d0;
}

.footer {
  padding: 10px 16px;
  font-size: 11px;
  color: #6b7280;
  text-align: center;
  border-top: 1px solid #1f2937;
  background: #020617;
}

/* Mobile tweaks */
@media (max-width: 600px) {
  .container {
    padding: 12px;
  }
}