/* styles.css */
:root {
  /* Paleta azul moderna */
  --bg: #0f172a;
  --panel: #1e293b;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --primary: #3b82f6;      /* azul */
  --primary-600: #1d4ed8;  /* azul escuro */
  --danger: #ef4444;
  --success: #22c55e;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  color: var(--text);
}

.container {
  max-width: 720px;
  margin: 48px auto;
  padding: 24px;
  background: linear-gradient(180deg, rgba(59,130,246,0.08), rgba(29,78,216,0.05));
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(59,130,246,0.15);
}

h1 { margin: 0 0 8px; font-size: 1.7rem; }
h2 { margin: 24px 0 12px; font-size: 1.1rem; color: var(--muted); font-weight: 600; }
.subtitle { margin: 0 0 16px; color: var(--muted); }

form { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: end; }
label { grid-column: 1 / -1; color: var(--muted); font-size: 0.95rem; }

input[type="text"] {
  padding: 12px 14px;
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: 8px;
  background: rgba(59,130,246,0.05);
  color: var(--text);
  outline: none;
}
input[type="text"]::placeholder { color: #9aa3ae88; }
input[type="text"]:focus { border-color: rgba(59,130,246,0.7); box-shadow: 0 0 0 3px rgba(59,130,246,0.2); }

button {
  padding: 12px 16px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(180deg, var(--primary), var(--primary-600));
  color: white;
  font-weight: 600;
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: not-allowed; }

.output {
  background: #0c0f16;
  padding: 16px;
  border-radius: 10px;
  border: 1px solid rgba(59,130,246,0.2);
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 140px;
}

.msg-error { color: var(--danger); }
.msg-ok { color: var(--success); }

.help {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

/* --- Details (Resumo) --- */
.details { margin-top: 24px; }
.details-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 820px) {
  .details-grid {
    grid-template-columns: repeat(2, minmax(260px, 1fr));
  }
}
.details-empty {
  color: var(--muted);
  border: 1px dashed rgba(59,130,246,0.25);
  border-radius: 10px;
  padding: 12px;
}
.detail-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border-radius: 10px;
  background: rgba(59,130,246,0.06);
  border: 1px solid rgba(59,130,246,0.18);
}
.detail-item .icon {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  background: radial-gradient(50% 50% at 50% 50%, rgba(59,130,246,0.4) 0%, rgba(29,78,216,0.2) 100%);
  border-radius: 8px;
  font-size: 16px;
}
.detail-item .info { display: grid; gap: 2px; }
.detail-item .label { color: var(--muted); font-size: 0.85rem; }
.detail-item .value { color: var(--text); font-weight: 600; font-size: 0.95rem; }

/* --- Resultado (toggle) --- */
.result-header { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.btn-secondary {
  padding: 8px 12px;
  border: 1px solid rgba(59,130,246,0.25);
  background: rgba(59,130,246,0.06);
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
}

.hidden { display: none; }

/* --- Site Footer --- */
.site-footer {
  margin-top: 64px;
  background: linear-gradient(180deg, rgba(30,41,59,0.9), rgba(15,23,42,0.95));
  border-top: 2px solid rgba(59,130,246,0.3);
  padding: 48px 0 0;
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .footer-grid { grid-template-columns: repeat(4, 1fr); }
}

.footer-title {
  margin: 0 0 16px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.02em;
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color .15s ease, padding-left .15s ease;
  display: inline-block;
}
.footer-links a:hover {
  color: var(--text);
  padding-left: 4px;
}

.footer-social {
  margin-top: 16px;
  display: flex;
  gap: 10px;
}
.social-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.3);
  color: var(--text);
  text-decoration: none;
  transition: all .15s ease;
}
.social-btn:hover {
  background: rgba(59,130,246,0.25);
  border-color: rgba(59,130,246,0.6);
  transform: translateY(-2px);
}

/* --- Footer SEO Text --- */
.footer-seo {
  margin-top: 32px;
  padding: 24px;
  border-radius: 12px;
  background: rgba(59,130,246,0.05);
  border: 1px dashed rgba(59,130,246,0.25);
}
.footer-seo p {
  margin: 0;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.65;
}
.footer-seo strong { color: var(--text); }

/* --- Footer Bottom --- */
.footer-bottom {
  margin-top: 32px;
  padding: 20px 0;
  border-top: 1px solid rgba(59,130,246,0.2);
  text-align: center;
}
.footer-bottom p {
  margin: 0;
  color: var(--muted);
  font-size: .88rem;
}

/* --- WhatsApp Floating Button --- */
.whatsapp-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  display: inline-grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  color: #fff;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4), 0 8px 40px rgba(18,140,126,0.3);
  border: none;
  z-index: 9999;
  transition: all .3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: whatsapp-pulse 2s ease-in-out infinite;
}
.whatsapp-fab svg {
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
}
.whatsapp-fab:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 6px 30px rgba(37,211,102,0.5), 0 12px 50px rgba(18,140,126,0.4);
  animation: none;
}
.whatsapp-fab:active {
  transform: scale(1.05);
}

@keyframes whatsapp-pulse {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(37,211,102,0.4), 0 8px 40px rgba(18,140,126,0.3);
  }
  50% {
    box-shadow: 0 4px 25px rgba(37,211,102,0.6), 0 8px 50px rgba(18,140,126,0.5);
  }
}