:root{
  --primary:#6366f1;
  --primary-dark:#4f46e5;
  --secondary:#8b5cf6;
  --accent:#a855f7;
  --gradient-main:linear-gradient(135deg,#6366f1 0%,#8b5cf6 100%);
  --gradient-soft:linear-gradient(135deg,#f0f9ff 0%,#f3f4f6 100%);
  --gray-light:#f8fafc;
  --gray-medium:#64748b;
  --gray-dark:#374151;
  --white:#fff;
  --green:#10b981;

  --pen-025:#22d3ee; --pen-05:#fb7185; --pen-1:#f59e0b; --pen-17:#3b82f6; --pen-24:#6b7280;

  --shadow:0 4px 12px rgba(99,102,241,.15);
  --shadow-lg:0 20px 40px rgba(99,102,241,.2);
}

/* reset básico */
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Poppins',-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.6;color:var(--gray-dark);background:var(--gray-light)}

/* Header */
.header{background:var(--gradient-main);color:#fff;padding:1rem 0;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.header::before{content:'';position:absolute;inset:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="40" r="1.5" fill="rgba(255,255,255,0.08)"/><circle cx="40" cy="80" r="1" fill="rgba(255,255,255,0.06)"/></svg>') repeat;animation:float 25s linear infinite}
@keyframes float{0%{transform:translate(-100px,-100px)}100%{transform:translate(100px,100px)}}
.header-content{max-width:1200px;margin:0 auto;padding:0 2rem;display:flex;justify-content:space-between;align-items:center;position:relative;z-index:2}
.logo-section{display:flex;align-items:center;gap:1rem}
.logo{width:70px;height:70px;background:linear-gradient(135deg,#fff 0%,#f0f9ff 100%);border-radius:20px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.75rem;color:var(--primary);box-shadow:0 8px 25px rgba(255,255,255,.3);border:2px solid rgba(255,255,255,.2)}
.doctor-info h1{font-size:1.75rem;font-weight:700;margin-bottom:.25rem}
.doctor-info p{font-size:.875rem;opacity:.9}
.header-contact{text-align:right;font-size:.875rem}
.contact-line{margin-bottom:.25rem;opacity:.9;display:flex;align-items:center;gap:.5rem;justify-content:flex-end}

/* Main */
.main-container{max-width:1200px;margin:0 auto;padding:2rem}
.teleconsulta-info{background:var(--gradient-soft);border-radius:20px;padding:2rem;margin-bottom:2rem;box-shadow:var(--shadow);text-align:center;border:2px solid rgba(99,102,241,.1);position:relative;overflow:hidden;animation:fadeIn .6s ease-out}
.teleconsulta-info::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(99,102,241,.05) 1px,transparent 1px);background-size:30px 30px;animation:sparkle 20s linear infinite}
.teleconsulta-info h2{color:var(--primary);font-size:1.5rem;font-weight:700;margin-bottom:.75rem;display:flex;align-items:center;justify-content:center;gap:.75rem;position:relative;z-index:2}
.teleconsulta-info p{color:var(--gray-dark);font-size:1rem;max-width:600px;margin:0 auto;position:relative;z-index:2}

/* Calculator wrapper */
.calculator-container{background:#fff;border-radius:20px;box-shadow:var(--shadow-lg);overflow:hidden;margin-bottom:2rem;animation:fadeIn .8s ease-out}
.calculator-header{background:var(--gradient-main);color:#fff;padding:2rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1.5rem;position:relative;overflow:hidden}
.calculator-header::before{content:'';position:absolute;inset:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 60 60"><circle cx="30" cy="30" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.05)"/><circle cx="50" cy="20" r="1.5" fill="rgba(255,255,255,0.07)"/></svg>') repeat;animation:float 30s linear infinite reverse}
.calculator-title-section h2{font-size:2rem;font-weight:700;margin-bottom:.5rem;position:relative;z-index:2}
.calculator-title-section p{font-size:.875rem;opacity:.9;position:relative;z-index:2}
.language-selector{display:flex;gap:.75rem;position:relative;z-index:2}
.lang-btn{padding:.75rem 1.25rem;border:2px solid rgba(255,255,255,.3);background:transparent;color:#fff;border-radius:15px;cursor:pointer;transition:.3s;font-size:.875rem;font-weight:600;display:flex;align-items:center;gap:.5rem;backdrop-filter:blur(10px)}
.lang-btn.active{background:rgba(255,255,255,.95);color:var(--primary);border-color:#fff;box-shadow:0 4px 12px rgba(255,255,255,.3);transform:translateY(-2px)}
.lang-btn:hover{background:rgba(255,255,255,.2);transform:translateY(-1px)}
.lang-btn.active:hover{background:rgba(255,255,255,.95);transform:translateY(-2px)}
.calculator-content{padding:2.5rem}

/* Section title */
.section-title{font-size:1.25rem;font-weight:700;color:var(--gray-dark);margin-bottom:1.5rem;display:flex;align-items:center;gap:.75rem}
.section-icon{width:24px;height:24px;color:var(--primary)}

/* Pen grid */
.pen-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.25rem;margin-bottom:2.5rem}
.pen-card{background:var(--gray-light);border:2px solid #e2e8f0;border-radius:16px;padding:1.5rem;text-align:center;cursor:pointer;transition:.3s;position:relative;overflow:hidden}
.pen-card[data-key="0.25"]{background:var(--pen-025);color:#fff}
.pen-card[data-key="0.5"]{background:var(--pen-05);color:#fff}
.pen-card[data-key="1"]{background:var(--pen-1);color:#fff}
.pen-card[data-key="1.7"]{background:var(--pen-17);color:#fff}
.pen-card[data-key="2.4"]{background:var(--pen-24);color:#fff}
.pen-card::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .6s}
.pen-card:hover::before{left:100%}
.pen-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.pen-card.active{transform:translateY(-4px);box-shadow:0 20px 40px rgba(0,0,0,.2);border:3px solid #fff}
.pen-dose{font-size:1.5rem;font-weight:800;margin-bottom:.75rem;position:relative;z-index:2}
.pen-specs{font-size:.875rem;opacity:.8;line-height:1.5;position:relative;z-index:2}

/* Cost section - OTIMIZADO PARA MOBILE */
.cost-section{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:2rem;margin-bottom:2.5rem;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.cost-grid{display:grid;grid-template-columns:1fr auto auto;gap:2rem;align-items:end}
.input-group{display:flex;flex-direction:column}
.input-label{font-size:.875rem;font-weight:600;color:var(--gray-dark);margin-bottom:.75rem}
.cost-input{padding:1rem 1.25rem;border:2px solid rgba(233,30,99,.2);border-radius:15px;font-size:1.125rem;font-weight:600;background:#fff;transition:.3s;outline:none;text-align:center}
.cost-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(99,102,241,.1)}
.cost-metric{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:1.5rem;text-align:center;min-width:140px;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.cost-metric:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.15)}
.metric-label{font-size:.75rem;color:var(--gray-medium);font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.75rem}
.metric-value{font-size:1.25rem;font-weight:800;color:var(--primary)}
.note{font-size:.8rem;color:var(--gray-medium);margin-top:.75rem;font-style:italic}

/* Dose selector */
.dose-section{margin-bottom:2.5rem}
.dose-slider-container{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:2rem;box-shadow:0 1px 3px rgba(0,0,0,.1)}

/* ===== Range estilizado com preenchimento azul até o thumb ===== */
.dose-slider{
  --fill: 0%;              /* setado via JS */
  width:100%;height:8px;border-radius:999px;outline:none;-webkit-appearance:none;margin:1.5rem 0;
  /* usamos o background do próprio input: uma camada azul (tamanho varia) + trilho cinza */
  background:
    linear-gradient(var(--primary),var(--primary)) 0/var(--fill) 100% no-repeat,
    #e5e7eb;
}
/* WebKit track transparente para o bg do input aparecer */
.dose-slider::-webkit-slider-runnable-track{
  height:8px;border-radius:999px;background:transparent;
}
.dose-slider::-webkit-slider-thumb{
  -webkit-appearance:none;width:24px;height:24px;border-radius:50%;
  background:var(--primary);border:3px solid #fff;box-shadow:0 2px 10px rgba(99,102,241,.5);
  margin-top:-8px; /* centraliza o thumb no trilho de 8px */
  cursor:pointer;transition:.2s;
}
.dose-slider::-webkit-slider-thumb:hover{transform:scale(1.06)}

/* Firefox precisa de progress/track separados */
.dose-slider::-moz-range-track{height:8px;border-radius:999px;background:#e5e7eb}
.dose-slider::-moz-range-progress{height:8px;border-radius:999px;background:var(--primary)}
.dose-slider::-moz-range-thumb{
  width:24px;height:24px;border-radius:50%;background:var(--primary);
  border:3px solid #fff;box-shadow:0 2px 10px rgba(99,102,241,.5);cursor:pointer;transition:.2s
}
.dose-slider::-moz-range-thumb:hover{transform:scale(1.06)}

.dose-display{display:inline-block;background:#fff;border:2px solid var(--primary);border-radius:12px;padding:.75rem 1.5rem;font-size:1.125rem;font-weight:800;color:var(--primary);margin-top:1rem;box-shadow:0 2px 8px rgba(99,102,241,.15)}

/* Result */
.result-card{background:var(--gradient-main);color:#fff;border-radius:16px;padding:2.5rem;text-align:center;margin-bottom:2rem;box-shadow:0 10px 30px rgba(99,102,241,.3)}
.result-value{font-size:3rem;font-weight:800;margin-bottom:.5rem}
.result-label{font-size:1rem;opacity:.9}

/* CTA */
.cta-section{text-align:center;margin:3rem 0}
.cta-button{display:inline-flex;align-items:center;gap:.75rem;background:var(--green);color:#fff;padding:1rem 2rem;border-radius:12px;text-decoration:none;font-size:1rem;font-weight:600;transition:.3s;box-shadow:0 4px 12px rgba(16,185,129,.3);border:none;cursor:pointer}
.cta-button:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(16,185,129,.4);background:#059669}
.whatsapp-icon{width:20px;height:20px}

/* Footer */
.footer{background:var(--gray-dark);color:#fff;padding:3rem 0 2rem;margin-top:4rem}
.footer-content{max-width:1200px;margin:0 auto;padding:0 2rem;text-align:center}
.footer-title{font-size:1.25rem;font-weight:700;margin-bottom:1.5rem;color:#f1f5f9}
.footer-contact{display:flex;justify-content:center;gap:3rem;margin-bottom:2.5rem;flex-wrap:wrap}
.footer-contact-item{display:flex;align-items:center;gap:.75rem;color:#cbd5e1;font-size:.875rem}
.social-section{margin:2.5rem 0}
.social-title{font-size:1.125rem;font-weight:600;margin-bottom:1.25rem;color:#f1f5f9}
.social-links{display:flex;justify-content:center;gap:1.25rem;margin-bottom:2rem}
.social-link{display:flex;align-items:center;justify-content:center;width:48px;height:48px;background:rgba(255,255,255,.1);border-radius:50%;color:#fff;text-decoration:none;transition:.3s;backdrop-filter:blur(10px)}
.social-link:hover{background:var(--primary);transform:translateY(-2px);box-shadow:0 8px 25px rgba(233,30,99,.4)}
.copyright{border-top:1px solid rgba(255,255,255,.1);padding-top:1.5rem;color:#94a3b8;font-size:.875rem}

/* Responsive - MELHORADO */
@media (max-width:768px){
  .header-content{flex-direction:column;text-align:center;gap:1.5rem}
  .logo-section{flex-direction:column;text-align:center}
  .header-contact{text-align:center}
  .contact-line{justify-content:center}
  
  /* HEADER DA CALCULADORA - LAYOUT MOBILE */
  .calculator-header{
    flex-direction:column;
    text-align:center;
    padding:1.5rem;
    gap:1.5rem;
  }
  .calculator-title-section h2{font-size:1.75rem}
  .calculator-title-section{margin-bottom:1rem}
  
  /* BOTÕES DE IDIOMA - RESPONSIVOS */
  .language-selector{
    flex-wrap:wrap;
    gap:.75rem;
    justify-content:center;
  }
  .lang-btn{
    padding:.75rem 1rem;
    font-size:.8rem;
    min-width:auto;
    flex-shrink:0;
  }
  
  .pen-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}
  
  /* SEÇÃO DE CUSTO - LAYOUT MOBILE COMPACTO */
  .cost-section{padding:1.5rem;margin-bottom:1.5rem}
  .cost-grid{
    display:flex;
    flex-direction:column;
    gap:1rem;
    align-items:stretch;
  }
  .input-group{margin-bottom:1rem}
  .cost-input{padding:.75rem 1rem;font-size:1rem}
  
  /* Forçar metrics em linha horizontal no mobile */
  .cost-grid .cost-metric:nth-child(2),
  .cost-grid .cost-metric:nth-child(3) {
    display:inline-block;
    width:calc(50% - 0.5rem);
    margin-right:1rem;
    float:left;
  }
  .cost-grid .cost-metric:nth-child(3) {
    margin-right:0;
  }
  .cost-grid::after {
    content:"";
    display:table;
    clear:both;
  }
  
  .cost-metric{
    padding:.75rem .5rem;
    min-width:0;
    min-height:auto;
  }
  .metric-label{
    font-size:.65rem;
    margin-bottom:.5rem;
    line-height:1.2;
  }
  .metric-value{
    font-size:1rem;
    line-height:1.2;
  }
  
  .footer-contact{flex-direction:column;gap:1rem}
  .main-container{padding:1.5rem}
  .calculator-content{padding:1.5rem}
  .teleconsulta-info{padding:1.5rem}
  .teleconsulta-info h2{font-size:1.25rem;flex-direction:column;gap:.5rem}
}

@media (max-width:480px){
  .calculator-title-section h2{font-size:1.5rem}
  .pen-grid{grid-template-columns:1fr 1fr;gap:1rem}
  .pen-card{padding:1rem}
  .pen-dose{font-size:1.25rem}
  .pen-specs{font-size:.8rem}
  .result-value{font-size:2.5rem}
  .logo{width:60px;height:60px;font-size:1.5rem}
  .doctor-info h1{font-size:1.5rem}
  
  /* HEADER DA CALCULADORA - TELAS PEQUENAS */
  .calculator-header{padding:1rem}
  .calculator-title-section h2{font-size:1.3rem;line-height:1.3}
  .calculator-title-section p{font-size:.8rem}
  
  /* BOTÕES DE IDIOMA - COMPACTOS */
  .language-selector{
    gap:.5rem;
    flex-wrap:wrap;
    justify-content:center;
  }
  .lang-btn{
    padding:.5rem .75rem;
    font-size:.75rem;
    border-radius:10px;
    min-width:auto;
    white-space:nowrap;
  }
  .lang-btn span{font-size:.75rem}
  
  /* SEÇÃO DE CUSTO - ULTRA COMPACTA */
  .cost-section{padding:1rem;margin-bottom:1rem}
  .cost-input{padding:.5rem .75rem;font-size:.9rem}
  .input-label{font-size:.8rem;margin-bottom:.5rem}
  .note{font-size:.7rem;margin-top:.5rem}
  
  /* Metrics ainda mais compactos e lado a lado */
  .cost-grid .cost-metric:nth-child(2),
  .cost-grid .cost-metric:nth-child(3) {
    width:calc(50% - 0.375rem);
    padding:.5rem .25rem;
    margin-right:.75rem;
  }
  .cost-grid .cost-metric:nth-child(3) {
    margin-right:0;
  }
  
  .metric-label{font-size:.6rem;margin-bottom:.25rem}
  .metric-value{font-size:.85rem}
  
  .section-title{font-size:1rem;margin-bottom:1rem}
  .dose-slider-container{padding:1.5rem}
  .dose-display{padding:.5rem 1rem;font-size:1rem}
}

/* Ajuste extra para dispositivos muito pequenos */
@media (max-width:360px){
  .main-container{padding:1rem}
  .calculator-content{padding:1rem}
  .cost-section{padding:.75rem}
  .cost-metric{padding:.5rem .75rem}
  .metric-value{font-size:.9rem}
  .pen-grid{gap:.75rem}
  .pen-card{padding:.75rem}
  
  /* HEADER ULTRA COMPACTO */
  .calculator-header{padding:.75rem}
  .calculator-title-section h2{font-size:1.2rem}
  .calculator-title-section p{font-size:.75rem}
  
  /* BOTÕES DE IDIOMA - ULTRA PEQUENOS */
  .language-selector{gap:.25rem}
  .lang-btn{
    padding:.4rem .6rem;
    font-size:.7rem;
    border-radius:8px;
  }
  .lang-btn span{font-size:.7rem}
}

/* animações */
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes sparkle{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}