:root {
  --bg: #0f172a;
  --card: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #38bdf8;
  --error: #ef4444;
  --success: #22c55e;
  --input-bg: #1f2937;
  --border: #334155;
  --focus: #60a5fa;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  background: linear-gradient(120deg, #0f172a 0%, #1f2937 100%);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  margin: 0;
}

.container {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 16px;
}

.card {
  background: radial-gradient(1200px 400px at 10% 10%, rgba(56,189,248,0.08), transparent 50%), var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}

.title {
  font-size: 1.75rem;
  margin: 0 0 6px;
}

.subtitle {
  color: var(--muted);
  margin: 0 0 20px;
}

.form-group,
.form-check {
  margin-bottom: 16px;
}

label {
  display: inline-block;
  margin-bottom: 8px;
  font-weight: 600;
}

.required-star {
  color: var(--error);
  font-weight: 600;
}

input[type="text"],
input[type="email"],
input[type="number"],
select,
textarea {
  width: 100%;
  background: var(--input-bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--focus);
  box-shadow: 0 0 0 3px rgba(96,165,250,0.25);
}

.helper {
  display: block;
  color: var(--muted);
  margin-top: 6px;
}

.error {
  display: block;
  color: var(--error);
  margin-top: 6px;
  min-height: 18px;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 10px;
}

.form-check input {
  width: 18px;
  height: 18px;
}

.actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 8px;
}

.btn {
  appearance: none;
  background: linear-gradient(90deg, var(--accent), #4ade80);
  color: #0b1020;
  border: none;
  border-radius: 12px;
  padding: 12px 18px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s, filter 0.2s;
}

.btn:hover {
  filter: brightness(1.05);
}

.btn:active {
  transform: scale(0.98);
}

#formStatus {
  color: var(--muted);
  font-size: 0.95rem;
}

.disclaimer {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Responsive tweaks */
@media (max-width: 600px) {
  .card {
    padding: 18px;
  }
  .title {
    font-size: 1.5rem;
  }
}