:root {
  --bg: #0f172a;
  --card: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --error: #dc2626;
  --ok: #16a34a;
  --radius: 12px;
}

* { box-sizing: border-box; }


.form-card {
  margin: 0;
  align-items: center;
  justify-content: center;
  padding: 24px;
  color: var(--ink);
  line-height: 1.5;
  
  width: 100%;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  padding: 32px;
}

h1 {
  margin: 0 0 4px;
  font-size: 1.6rem;
  font-weight: 700;
}

.hint {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 0.9rem;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
}

label {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
}

input, textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s;
  font-family: inherit;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

input.invalid, textarea.invalid {
  border-color: var(--error);
}

.error {
  color: var(--error);
  font-size: 0.8rem;
  margin-top: 4px;
  min-height: 1em;
}

button {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
}

button:hover { background: var(--primary-dark); }
button:active { transform: translateY(1px); }
button:disabled { opacity: 0.6; cursor: not-allowed; }

.status {
  margin: 16px 0 0;
  font-size: 0.95rem;
  text-align: center;
  min-height: 1.2em;
}

.status.ok { color: var(--ok); }
.status.err { color: var(--error); }

/* Honeypot – skrytý před lidmi, viditelný pro roboty */
.hp-field {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .form-card { padding: 22px; }
  h1 { font-size: 1.4rem; }
}