:root {
  color-scheme: dark;
  --bg: #08111d;
  --card: #102235;
  --card-border: #22364d;
  --text: #e6eef9;
  --muted: #9db3c7;
  --accent: #4d88ff;
  --accent-2: #2b6be8;
  --success: #13341e;
  --success-border: #245f39;
  --error: #3b1820;
  --error-border: #7e3546;
  --input: #0b1726;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #10263d 0, var(--bg) 44%);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  max-width: 50rem;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

.card,
.panel {
  border: 1px solid var(--card-border);
  border-radius: 1rem;
  background: rgba(16, 34, 53, 0.96);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.card { padding: 1.5rem; }
.panel { padding: 1rem; margin-top: 1rem; }

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1, h2, p { margin-top: 0; }

h1 { margin-bottom: 0.75rem; font-size: clamp(1.8rem, 4vw, 2.5rem); }
h2 { margin-bottom: 0.75rem; font-size: 1.2rem; }

.lede, .hint, .status { color: var(--muted); line-height: 1.5; }

label { display: block; margin: 1rem 0 0.35rem; font-weight: 600; }

input, select {
  width: 100%;
  border: 1px solid var(--card-border);
  border-radius: 0.75rem;
  background: var(--input);
  color: var(--text);
  padding: 0.85rem 0.95rem;
  font: inherit;
}

input:focus, select:focus, button:focus, a.button:focus {
  outline: 3px solid rgba(77, 136, 255, 0.35);
  outline-offset: 2px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.8rem 1rem;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.button.primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  color: #fff;
}

.button.secondary {
  background: transparent;
  border-color: var(--card-border);
  color: var(--text);
}

.success { background: var(--success); border-color: var(--success-border); }
.error { background: var(--error); border-color: var(--error-border); }

.status {
  min-height: 1.5rem;
  margin-top: 1rem;
}

.status.error {
  background: transparent;
  border: 0;
  color: #ffb8c3;
  padding: 0.25rem 0 0;
}

.status.success {
  background: transparent;
  border: 0;
  color: #b7f0c6;
  padding: 0.25rem 0 0;
}

.status.warning {
  background: transparent;
  border: 0;
  color: #ffe08a;
  padding: 0.25rem 0 0;
}

.debug {
  margin-top: 1rem;
  padding: 0.85rem;
  border-radius: 0.75rem;
  background: rgba(7, 15, 24, 0.85);
  border: 1px solid var(--card-border);
}

.debug-title {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

@media (max-width: 640px) {
  .shell { padding: 1rem 0.75rem 2rem; }
  .card, .panel { border-radius: 0.9rem; }
}