:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-soft: #1f2937;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --success: #10b981;
  --danger: #ef4444;
  --border: rgba(148, 163, 184, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #e8f5e9;
  color: var(--text);
}

.container {
  max-width: 980px;
  margin: 48px auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
}

.panel {
  background: rgba(17, 24, 39, 0.9);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.35);
}

h1, h2 {
  margin-top: 0;
}

.subtitle {
  color: var(--muted);
  margin-bottom: 20px;
}

.status {
  margin-bottom: 16px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(79, 70, 229, 0.15);
  border: 1px solid rgba(79, 70, 229, 0.3);
  color: #c7d2fe;
}

.status.error {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fecaca;
}

.status.success {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.3);
  color: #bbf7d0;
}

form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

label {
  font-weight: 600;
}

input, textarea, button {
  font: inherit;
}

input, textarea {
  width: 100%;
  background: var(--panel-soft);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}

button {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease;
}

button:hover {
  background: var(--accent-hover);
}

.items-list {
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  margin: 0;
}

.item {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(31, 41, 55, 0.8);
}

.item h3 {
  margin: 0 0 8px;
}

.item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.empty-state {
  color: var(--muted);
  padding: 16px 0;
}

@media (max-width: 760px) {
  .container {
    grid-template-columns: 1fr;
  }
}