*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue-dark:  #1e3a5f;
  --blue:       #2563eb;
  --blue-light: #dbeafe;
  --green:      #16a34a;
  --red:        #dc2626;
  --gray-50:    #f8fafc;
  --gray-100:   #f3f4f6;
  --gray-200:   #e5e7eb;
  --gray-400:   #9ca3af;
  --gray-600:   #4b5563;
  --gray-800:   #1f2937;
  --radius:     12px;
  --shadow:     0 4px 24px rgba(0,0,0,.08);
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--gray-100);
  color: var(--gray-800);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* header  */
header {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 100%);
  padding: 36px 24px 40px;
  text-align: center;
  color: #fff;
}

.header-logo {
  max-height: 52px;
  width: auto;
  margin-bottom: 16px;
  object-fit: contain;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -.3px;
}

header p {
  margin-top: 8px;
  color: rgba(255,255,255,.75);
  font-size: .95rem;
  max-width: 520px;
  margin-inline: auto;
  line-height: 1.6;
}

main {
  flex: 1;
  max-width: 680px;
  width: 100%;
  margin: -20px auto 48px;
  padding: 0 16px;
}

/* card */
.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 40px;
}

@media (max-width: 600px) {
  .card { padding: 24px 20px; }
  header h1 { font-size: 1.5rem; }
}

/* info banner */
.info-banner {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 28px;
  font-size: .875rem;
  color: #1e40af;
  line-height: 1.5;
}

.info-banner .icon { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }

/* formulario */
.form-group { margin-bottom: 22px; }

label {
  display: block;
  font-size: .875rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 6px;
}

label .optional {
  font-weight: 400;
  color: var(--gray-400);
  font-size: .8rem;
  margin-left: 4px;
}

select, textarea, input[type="text"] {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-size: .925rem;
  font-family: inherit;
  color: var(--gray-800);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}

select:focus, textarea:focus, input[type="text"]:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

textarea {
  resize: vertical;
  min-height: 140px;
  line-height: 1.6;
}

.char-counter {
  text-align: right;
  font-size: .78rem;
  color: var(--gray-400);
  margin-top: 4px;
}

.char-counter.warn { color: #f59e0b; }
.char-counter.over { color: var(--red); }

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

@media (max-width: 480px) {
  .optional-grid { grid-template-columns: 1fr; }
}

.consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--gray-50);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 24px;
  font-size: .85rem;
  color: var(--gray-600);
  line-height: 1.5;
  cursor: pointer;
}

.consent input[type="checkbox"] {
  width: 17px;
  height: 17px;
  accent-color: var(--blue);
  flex-shrink: 0;
  margin-top: 1px;
  cursor: pointer;
}

/* botão */
.btn-submit {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--blue-dark), var(--blue));
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity .2s, transform .1s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-submit:hover:not(:disabled) { opacity: .92; }
.btn-submit:active:not(:disabled) { transform: scale(.99); }
.btn-submit:disabled { opacity: .6; cursor: not-allowed; }

/* toast */
.toast {
  display: none;
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 20px;
  font-size: .9rem;
  line-height: 1.5;
  align-items: flex-start;
  gap: 10px;
}

.toast.show { display: flex; }
.toast.success { background: #f0fdf4; border: 1px solid #86efac; color: #15803d; }
.toast.error   { background: #fef2f2; border: 1px solid #fca5a5; color: var(--red); }

/* tela de sucesso */
.success-screen {
  display: none;
  text-align: center;
  padding: 20px 0 8px;
}

.success-screen.show { display: block; }

.success-icon {
  width: 72px;
  height: 72px;
  background: #f0fdf4;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 20px;
}

.success-screen h2 { font-size: 1.4rem; color: var(--green); margin-bottom: 10px; }
.success-screen p  { color: var(--gray-600); font-size: .9rem; line-height: 1.6; margin-bottom: 6px; }

.protocol-box {
  display: inline-block;
  background: var(--gray-50);
  border: 1.5px dashed var(--gray-200);
  border-radius: 8px;
  padding: 10px 24px;
  margin: 16px 0 24px;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--blue-dark);
}

.btn-new {
  background: none;
  border: 1.5px solid var(--blue);
  color: var(--blue);
  padding: 10px 28px;
  border-radius: 8px;
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, color .2s;
}

.btn-new:hover { background: var(--blue); color: #fff; }

/* footer */
footer {
  text-align: center;
  padding: 20px;
  font-size: .8rem;
  color: var(--gray-400);
}

footer strong { color: var(--gray-600); }

/* spinner */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}