:root {
  --bg: #0f0f12;
  --surface: #1a1a20;
  --border: #2a2a32;
  --text: #e8e8ed;
  --muted: #8888a0;
  --accent: #6c8ae8;
  --accent-dim: #4a6bc9;
  --success: #4ade80;
  --card-radius: 12px;
  --font: 'Segoe UI', system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.header {
  padding: 2rem 1.5rem;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
  font-weight: 600;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  padding: 0.75rem 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.tab {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 0.9rem;
  cursor: pointer;
}

.tab:hover {
  color: var(--text);
  background: rgba(255,255,255,0.05);
}

.tab-active {
  color: var(--accent);
  background: rgba(108, 138, 232, 0.15);
}

#dashboard {
  max-width: 900px;
  margin: 0 auto;
  padding: 1rem 1.5rem 3rem;
}

.panel {
  display: none;
}

.panel-active {
  display: block;
}

.cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.placeholder {
  color: var(--muted);
  text-align: center;
  padding: 3rem 1rem;
}

.process-block {
  max-width: 480px;
  margin: 0 auto 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
}
.process-block p {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.process-block input {
  display: block;
  width: 100%;
  margin-bottom: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.95rem;
}
.process-block button {
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
}
.process-block button:hover:not(:disabled) {
  background: var(--accent-dim);
}
.process-block button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.process-block #process-status {
  margin-left: 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.hidden {
  display: none;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

.chart-wrap {
  position: relative;
  height: 240px;
}

.card .chart-wrap canvas {
  max-height: 240px;
}