:root{
  --black: #050608; /* preto profundo */
  --white: #ffffff;
  --gray-900: #0f1724;
  --gray-600: #4b5563;
  --gray-500: #6b7280;
  --baby-blue: #bdefff; /* azul bebê claro */
  --accent: #7fd3ff; /* tom levemente mais vivo para gradiente */
  --glass: rgba(255,255,255,0.03);
}

*{box-sizing:border-box}
html{height:100%}
body{
  min-height:100%;
  margin:0;
  font-family: Inter,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background: linear-gradient(180deg,var(--black), var(--gray-900));
  background-attachment: fixed;
  color: var(--white);
  -webkit-font-smoothing:antialiased;
}

.wrap{max-width:1200px;margin:48px auto;padding:24px}
.hero{display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px}
.logo{width:88px;height:88px;border-radius:16px;background:linear-gradient(135deg,var(--baby-blue),var(--accent));display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--black);box-shadow:0 6px 24px rgba(0,0,0,0.5)}
.brand-title{margin:0;font-size:30px}
.product-title{margin:0;font-size:20px}
.lead{color:var(--gray-500);margin:0}

.card{margin-top:28px;background:linear-gradient(180deg, rgba(255,255,255,0.02), transparent);padding:22px;border-radius:12px;box-shadow:0 8px 40px rgba(2,6,23,0.6);border:1px solid rgba(255,255,255,0.03)}
.card label{display:block;margin-bottom:8px;color:var(--gray-500);font-size:13px;font-weight:600;letter-spacing:0.6px}
.card input[type="text"],
.card input[type="email"]{
  width:100%;
  padding:12px 14px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,0.04);
  background:var(--glass);
  color:var(--white);
  font-size:15px;
  margin-bottom:12px;
}
.card input::placeholder{color:rgba(255,255,255,0.45)}

#submit-btn {
  width: 100%;
  padding: 18px;
  font-size: 20px;
  font-weight: 800;
  margin-top: 24px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--baby-blue), var(--accent));
  color: var(--black);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

#submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(127, 211, 255, 0.4);
  filter: brightness(1.1);
}

#submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--gray-600);
  box-shadow: none;
}

/* --- Calculator Redesign Styles --- */

.input-group {
  margin-bottom: 24px;
}

.input-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--gray-500);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* Styled inputs for calculator */
.calc-controls input[type="number"] {
  width: 100%;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(0,0,0,0.2);
  color: var(--white);
  font-size: 16px;
  transition: all 0.2s ease;
}

.calc-controls input[type="number"]:focus {
  outline: none;
  border-color: var(--baby-blue);
  background: rgba(0,0,0,0.4);
  box-shadow: 0 0 0 3px rgba(189, 239, 255, 0.1);
}

/* Range Slider Container */
.range-container {
  background: rgba(255,255,255,0.03);
  padding: 16px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.05);
}

.range-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--gray-500);
}

.range-label strong {
  color: var(--baby-blue);
  font-size: 16px;
  font-weight: 700;
}

.range-control-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.range-control-row input[type="range"] {
  flex: 1;
  cursor: pointer;
  height: 6px;
}

.range-control-row input[type="number"] {
  width: 80px;
  text-align: center;
  font-weight: 700;
  padding: 8px;
}

/* Action Buttons */
.calc-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}

.calc-actions button {
  margin-top: 0; /* Override default button margin */
  flex: 1;
  padding: 14px;
  font-size: 16px;
}

.calc-actions .secondary {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--white);
}

.calc-actions .secondary:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--white);
}

.foot{margin-top:18px;text-align:center;color:var(--gray-500);font-size:13px}

/* Responsividade */
@media (max-width:520px){
  .wrap{padding:16px;margin:28px auto}
  .logo{width:68px;height:68px}
  h1{font-size:22px}
}

/* app area */
.hidden{display:none}
.app-area{margin-top:28px;background:rgba(255,255,255,0.02);padding:20px;border-radius:10px}
.tabs{display:flex;gap:8px;margin-bottom:16px}
.tabs .tab{padding:8px 12px;border-radius:8px;background:transparent;border:1px solid rgba(255,255,255,0.04);cursor:pointer;color:var(--white)}
.tabs .tab.active{background:linear-gradient(90deg,var(--baby-blue),var(--accent));color:var(--black);font-weight:700}
.tab-content .panel{display:none}
.tab-content .panel.active{
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
}

/* Calculator Layout - Centered Column */
.calc{
  display:flex;
  flex-direction:column;
  gap:12px;
  align-items:center;
  width:100%;
}
.calc-controls{
  width: 100%;
  max-width: 520px;
  flex: 0 0 auto;
  text-align: left;
}
.calc-result{width:100%;max-width:1100px}

@media (max-width:980px){
  .calc{flex-direction:column}
  .calc-controls{min-width:0;flex:1}
  .calc-result{width:100%}
}
.calc-result{margin-top:0;color:var(--baby-blue);font-weight:700}

/* layout for side-by-side comparison */
.result-grid{
  display:flex;
  flex-direction:row;
  gap:12px;
  align-items:stretch;
  margin-top:10px;
  flex-wrap:wrap;
  justify-content:center;
}
.result-col{
  flex:1 1 220px;
  max-width:300px;
}
/* ensure breakdown boxes expand to fill column */
.breakdown{width:100%}

/* panels stay horizontal; user can scroll horizontally on small screens */

.breakdown{background:rgba(255,255,255,0.02);padding:10px;border-radius:8px;margin-top:10px}
.breakdown h3{margin:0 0 8px 0;font-size:16px}
.breakdown div{margin:4px 0;color:var(--white)}
.breakdown .break-total{margin-top:8px;color:var(--baby-blue)}
.breakdown.grand{background:linear-gradient(90deg,#374151,#4b5563);color:var(--white)}


/* tax table */
.tax-table{border-collapse:collapse;background:rgba(0,0,0,0.12)}
.tax-table th,.tax-table td{padding:8px;border:1px solid rgba(255,255,255,0.04);text-align:left}
.tax-table thead th{background:rgba(255,255,255,0.03);font-weight:700}

/* slider style (basic) */
input[type=range]{appearance:none;-webkit-appearance:none;height:8px;background:linear-gradient(90deg,var(--baby-blue),var(--accent));border-radius:8px}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--black);box-shadow:0 2px 6px rgba(0,0,0,0.4)}

/* WhatsApp Float Button */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  z-index: 1000;
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  transition: transform 0.3s ease;
  overflow: hidden; /* Ensures image stays within circle if square */
  background-color: #25D366; /* WhatsApp green background fallback */
  display: flex;
  align-items: center;
  justify-content: center;
}

.whatsapp-float:hover {
  transform: scale(1.1);
}

.whatsapp-float img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Message Styles */
.message {
  margin-top: 16px;
  font-size: 14px;
  min-height: 20px;
  text-align: center;
  transition: all 0.3s ease;
}

.message.success {
  background-color: #dcfce7; /* Green 100 */
  color: #166534; /* Green 800 */
  padding: 16px;
  border-radius: 12px;
  border: 1px solid #22c55e; /* Green 500 */
  font-weight: 700;
  font-size: 16px;
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.2);
  animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.message.error {
  color: #ef4444; /* Red 500 */
  font-weight: 600;
}

@keyframes popIn {
  from { opacity: 0; transform: scale(0.9) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}