:root {
  --bg: #0f172a;
  --card: rgba(30, 41, 59, 0.7);
  --primary: #10b981; /* Emerald */
  --secondary: #8b5cf6; /* Violet */
  --accent: #38bdf8;
  --text: #f8fafc;
  --muted: #94a3b8;
  --success: #10b981;
  --error: #ef4444;
  --radius: 16px;
  --glass: blur(12px);
}

* { box-sizing: border-box; transition: all 0.2s ease; }

body {
  margin: 0;
  font-family: 'Outfit', 'Inter', system-ui, sans-serif;
  background: radial-gradient(circle at top right, #1e1b4b, #0f172a);
  color: var(--text);
  min-height: 100vh;
  padding: 20px;
  line-height: 1.5;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 24px;
}

.header {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 20px;
  background: var(--card);
  backdrop-filter: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
}

.brand {
  font-weight: 800;
  font-size: 1.5rem;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.controls {
  display: flex;
  gap: 12px;
  align-items: center;
}

.controls input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: white;
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 0.9rem;
}

.controls input:focus {
  border-color: var(--primary);
  outline: none;
  background: rgba(255, 255, 255, 0.1);
}

button {
  cursor: pointer;
  padding: 10px 18px;
  border-radius: 12px;
  border: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

button.primary { background: var(--primary); color: #064e3b; }
button.primary:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3); }

button.secondary { background: rgba(255, 255, 255, 0.1); color: white; border: 1px solid rgba(255, 255, 255, 0.1); }
button.secondary:hover { background: rgba(255, 255, 255, 0.15); }

button.danger { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.2); }
button.danger:hover { background: #ef4444; color: white; }

.panel {
  background: var(--card);
  backdrop-filter: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 24px;
}

.panel h3 {
  margin: 0 0 20px 0;
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sessions-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.session-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.session-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--secondary);
}

.session-meta b {
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 4px;
  display: block;
}

.status-badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.status-ready { background: rgba(16, 185, 129, 0.2); color: var(--primary); }
.status-loading { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }
.status-closed { background: rgba(239, 68, 68, 0.2); color: var(--error); }

.session-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.session-actions button {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.qr-area {
  margin-top: 12px;
  background: white;
  padding: 12px;
  border-radius: 12px;
  display: flex;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.qr-area img { max-width: 180px; }

.right-column {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-row {
  margin-bottom: 16px;
}

.form-row label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 8px;
}

input[type=text], textarea, select {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: white;
  padding: 12px;
  border-radius: 10px;
  font-family: inherit;
}

.response pre {
  background: #020617;
  padding: 16px;
  border-radius: 12px;
  font-size: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow-x: auto;
}

.icon { width: 18px; height: 18px; fill: currentColor; }

@media (max-width: 1000px) {
  .app { grid-template-columns: 1fr; }
}