/* ===========================================================================
   Dr. João Paulo Telles — shared brand system (v2)
   Navy + silver · Montserrat (uppercase display) · Inter (body)
   =========================================================================== */
:root{
  --navy:#0a2236; --navy-2:#0e2a40; --navy-3:#123250;
  --silver:#d9dee4; --silver-2:#f4f6f8;
  --ink:#0e2a40; --mute:#5a6b7d; --mute-dark:#8aa0b4;
  --line:rgba(255,255,255,.12); --line-dark:rgba(14,42,64,.12);
  --hair:#2f6d8c;
  --radius:16px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--ink);background:var(--silver-2);font-size:18px;line-height:1.7;overflow-x:hidden}
body.dark{background:var(--navy);color:#fff}
::selection{background:var(--hair);color:#fff}
img{max-width:100%;display:block}

h1,h2,h3,.kicker{font-family:'Montserrat',sans-serif;letter-spacing:-.01em}
h1,h2{font-weight:800;line-height:1.02}
a{color:var(--hair);text-decoration:none;transition:color .2s}
.wrap{max-width:1100px;margin:0 auto;padding:0 28px}

.kicker{display:inline-flex;align-items:center;gap:13px;text-transform:uppercase;letter-spacing:.2em;font-weight:700;font-size:.72rem;color:var(--hair)}
.kicker::before{content:"";width:32px;height:1px;background:var(--hair);display:inline-block}

/* ===== NAV (identical across pages) ===== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;border-bottom:1px solid transparent;transition:background .4s,border-color .4s,padding .4s}
.site-header.scrolled{background:rgba(10,34,54,.9);backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;max-width:1240px;margin:0 auto;padding:22px 28px;transition:padding .4s}
.site-header.scrolled .nav{padding:14px 28px}
.brand{display:flex;align-items:center}
.brand-logo{height:28px;width:auto;display:block;transition:height .4s}
.site-header.scrolled .brand-logo{height:25px}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:rgba(255,255,255,.82);font-size:.82rem;font-weight:500;position:relative}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:1px;background:#fff;transition:width .3s}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:100%}
.nav-cta{border:1px solid var(--line);border-radius:100px;padding:11px 20px;color:#fff!important;text-transform:uppercase;font-family:'Montserrat';font-weight:700;font-size:.7rem;letter-spacing:.11em}
.nav-cta:hover{background:#fff;color:var(--navy)!important;border-color:#fff}
.nav-cta::after{display:none}
@media(max-width:760px){.nav-links{display:none}}

/* ===== buttons ===== */
.btn{font-family:'Montserrat';font-weight:700;text-transform:uppercase;font-size:.76rem;letter-spacing:.1em;display:inline-flex;align-items:center;gap:9px;padding:15px 28px;border-radius:100px;transition:transform .25s,box-shadow .25s,background .25s,color .25s;cursor:pointer;border:1px solid transparent}
.btn-pri{background:var(--navy);color:#fff}
.btn-pri:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(10,34,54,.28);color:#fff}
body.dark .btn-pri{background:#fff;color:var(--navy)}
body.dark .btn-pri:hover{box-shadow:0 14px 34px rgba(255,255,255,.16)}
.btn-ghost{border-color:var(--line-dark);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
body.dark .btn-ghost{border-color:var(--line);color:#fff}
body.dark .btn-ghost:hover{background:rgba(255,255,255,.08);color:#fff}

/* ===== navy page-hero band (sits under the fixed nav) ===== */
.page-hero{background:var(--navy);color:#fff;padding:150px 0 72px;position:relative;overflow:hidden}
.page-hero .back{display:inline-block;color:var(--mute-dark);font-size:.74rem;text-transform:uppercase;letter-spacing:.14em;font-family:'Montserrat';font-weight:600;margin-bottom:22px}
.page-hero .back:hover{color:#fff}
.page-hero h1{font-size:clamp(2rem,5vw,3.4rem);text-transform:uppercase;line-height:1;max-width:20ch}
.page-hero h1 .thin{font-weight:500;color:var(--mute-dark)}
.page-hero p{color:var(--mute-dark);max-width:62ch;margin-top:20px;font-weight:300;font-size:1.05rem}

/* ===== content / prose (articles, coupon) ===== */
.content{max-width:760px;margin:0 auto;padding:64px 28px 24px;position:relative;z-index:1}
.prose{font-size:1.08rem;color:#2a3a48}
.prose h2{font-size:1.7rem;text-transform:none;color:var(--ink);margin:44px 0 14px;letter-spacing:-.01em}
.prose h3{font-family:'Inter',sans-serif;font-weight:700;font-size:1.18rem;color:var(--ink);margin:26px 0 8px}
.prose p{margin-bottom:16px}
.prose ul,.prose ol{margin:0 0 18px 22px}
.prose li{margin-bottom:8px}
.prose strong{color:var(--ink);font-weight:600}
.prose a{color:var(--hair);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--navy)}
.prose blockquote{border-left:3px solid var(--hair);padding:6px 0 6px 22px;margin:22px 0;color:var(--mute);font-style:italic}
.kicker-band{margin-bottom:18px}

/* ===== cards (blog index) ===== */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line-dark);border-radius:var(--radius);overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s}
.card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(10,34,54,.1);border-color:var(--hair)}
.card-top{height:5px;background:var(--navy)}
.card-body{padding:26px;display:flex;flex-direction:column;flex:1}
.card-tag{align-self:flex-start;font-family:'Montserrat';font-weight:700;font-size:.66rem;letter-spacing:.13em;text-transform:uppercase;color:var(--hair);margin-bottom:14px}
.card h2{font-size:1.3rem;text-transform:none;line-height:1.22;margin-bottom:10px;letter-spacing:-.01em}
.card h2 a{color:var(--ink)}
.card h2 a:hover{color:var(--hair)}
.card p{color:var(--mute);font-size:.97rem;flex:1;margin-bottom:18px}
.card-meta{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line-dark);padding-top:14px;font-size:.82rem;color:var(--mute)}
.card-meta .more{font-family:'Montserrat';font-weight:700;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--hair)}

/* ===== coupon block ===== */
.coupon-box{background:var(--navy);color:#fff;border-radius:var(--radius);padding:34px 26px;text-align:center;margin:30px 0}
.coupon-box .l{font-family:'Montserrat';font-weight:700;font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--mute-dark)}
.coupon-code{display:inline-block;background:#fff;color:var(--navy);font-family:'Montserrat';font-weight:800;font-size:1.7rem;letter-spacing:.12em;padding:14px 28px;margin:14px 0;border-radius:10px;border:2px dashed var(--hair);user-select:all}
.coupon-strip{background:var(--navy-3);color:#fff;border-radius:var(--radius);padding:30px 26px;text-align:center;margin:48px 0 0}
.coupon-strip h3{text-transform:none;font-weight:700;font-size:1.3rem;margin-bottom:8px}
.coupon-strip p{color:var(--mute-dark);margin-bottom:16px}
.coupon-strip code{background:rgba(255,255,255,.1);border:1px dashed var(--line);padding:3px 10px;border-radius:6px;font-family:'Montserrat';letter-spacing:.08em}

/* author bio / faq / cta (coupon page) */
.callout{background:#fff;border:1px solid var(--line-dark);border-left:4px solid var(--hair);padding:22px 24px;border-radius:12px;margin:26px 0}
.callout h3{font-family:'Inter',sans-serif;font-weight:700;color:var(--ink);margin-bottom:8px}
.faq{background:#fff;border:1px solid var(--line-dark);border-radius:12px;padding:20px 24px;margin-bottom:12px}
.faq h3{font-family:'Inter',sans-serif;font-weight:700;color:var(--ink);margin-bottom:6px;font-size:1.08rem}
.faq p{margin:0;color:var(--mute)}
.cta-final{background:var(--navy);color:#fff;border-radius:var(--radius);padding:36px 28px;text-align:center;margin:40px 0}
.cta-final h3{text-transform:none;font-weight:700;margin-bottom:8px}
.cta-final p{color:var(--mute-dark);margin-bottom:16px}

/* ===== footer ===== */
.site-footer{background:#081826;color:var(--mute-dark);padding:54px 0 40px;border-top:1px solid var(--line)}
.site-footer .foot{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;font-size:.84rem}
.site-footer a{color:var(--mute-dark)}
.site-footer a:hover{color:#fff}
.site-footer .links{display:flex;gap:22px;flex-wrap:wrap}

/* ===== dotted brain canvas ===== */
#brain{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
body.dark .content,body.dark main,body.dark .wrap{position:relative;z-index:1}

/* ===== whatsapp float ===== */
.wa{position:fixed;right:24px;bottom:24px;z-index:60;width:60px;height:60px;border-radius:50%;background:#25D366;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 30px rgba(37,211,102,.4);transition:transform .25s}
.wa:hover{transform:scale(1.08)}
.wa svg{width:32px;height:32px;fill:#fff}

/* ===== reveal-on-scroll ===== */
.rv{opacity:0;transform:translateY(28px);transition:opacity .9s cubic-bezier(.16,1,.3,1),transform .9s cubic-bezier(.16,1,.3,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}#brain{display:none}}

@media(max-width:600px){
  body{font-size:17px}
  .content{padding:48px 22px 16px}
  .card-grid{grid-template-columns:1fr}
  .page-hero{padding:120px 0 56px}
  .site-footer .foot{flex-direction:column;text-align:center}
}