.support-card {
  max-width: 540px;
  margin: 2.5rem auto;
  padding: 2rem;
  border-radius: 12px;
  background: var(--card-bg, #fff);
  border: 1px solid var(--border, #e5e7eb);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.support-card h1 {
  margin-top: 0;
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}
.support-card p.subtitle {
  color: #6b7280;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}
.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}
.form-group .optional-tag {
  font-weight: 400;
  color: #9ca3af;
  font-size: 0.8rem;
  margin-left: 0.3rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 0.95rem;
  box-sizing: border-box;
  background: var(--input-bg, #fff);
  color: inherit;
  transition: border-color 0.15s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-group textarea {
  resize: vertical;
  min-height: 100px;
}
.char-count {
  font-size: 0.78rem;
  color: #9ca3af;
  text-align: right;
  margin-top: 0.2rem;
}
.char-count.near-limit { color: #d97706; }
.char-count.at-limit { color: #dc2626; }
.btn-submit {
  width: 100%;
  padding: 0.65rem 1rem;
  background: #2563eb;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-submit:hover { background: #1d4ed8; }
.btn-submit:disabled { background: #93c5fd; cursor: not-allowed; }
#success-msg {
  display: none;
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  font-weight: 500;
}
#error-msg {
  display: none;
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 0.75rem 1.25rem;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.support-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: #6b7280;
}
.support-footer a {
  color: #2563eb;
  text-decoration: none;
}
.support-footer a:hover { text-decoration: underline; }
.support-footer .divider { margin: 0 0.4rem; }

@media (prefers-color-scheme: dark) {
  .support-card {
    background: #1e293b;
    border-color: #334155;
  }
  .form-group input,
  .form-group textarea {
    background: #0f172a;
    border-color: #334155;
    color: #f1f5f9;
  }
  #success-msg { background: #14532d; color: #bbf7d0; border-color: #166534; }
  #error-msg { background: #450a0a; color: #fca5a5; border-color: #991b1b; }
}