/* ===========================
   Base / Design Tokens
   =========================== */
:root{
  --primary:#4a6bff;
  --primary-dark:#3a56cc;
  --secondary:#ff6b4a;

  --bg:#0f1326;
  --bg-2:#121a33;
  --surface: rgba(255,255,255,0.06);
  --surface-2: rgba(255,255,255,0.10);

  --text:#e9ecff;
  --muted: rgba(233,236,255,0.75);

  --shadow: 0 10px 25px rgba(0,0,0,0.25);
  --shadow-soft: 0 6px 18px rgba(0,0,0,0.18);

  --radius: 12px;
  --radius-sm: 10px;

  --container: 1200px;

  --transition: 220ms ease;
  --transition-slow: 420ms ease;

  --nav-h: 80px;
}

/* ===========================
   Reset 
   =========================== */
*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:"Open Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 700px at 15% 20%, rgba(74,107,255,0.20), transparent 60%),
              radial-gradient(1100px 650px at 85% 20%, rgba(255,107,74,0.14), transparent 60%),
              linear-gradient(135deg, var(--bg) 0%, #0b1022 100%);
  line-height:1.55;
  overflow-x:hidden;
}

img{ max-width:100%; height:auto; display:block; }

h1,h2,h3{
  font-family:"Montserrat", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  margin:0 0 12px 0;
  letter-spacing:-0.02em;
}

p{ margin:0 0 16px 0; color:var(--muted); }

a{ color:inherit; }
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible{
  outline: 3px solid rgba(74,107,255,0.75);
  outline-offset: 3px;
  border-radius: 10px;
}

.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);
  white-space:nowrap;border:0;
}

.skip-link{
  position:absolute;
  top:10px; left:10px;
  background:#fff;
  color:#111;
  padding:10px 12px;
  border-radius:10px;
  transform:translateY(-150%);
  transition: transform var(--transition);
  z-index: 9999;
}
.skip-link:focus{ transform:translateY(0); }

/* ancoragem: evita navbar por cima */
section{ scroll-margin-top: calc(var(--nav-h) + 18px); }

/* ===========================
   Layout helpers
   =========================== */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}

span{ color:var(--primary); }

/* ===========================
   Background Particles
   =========================== */
#particles-js{
  position:fixed;
  inset:0;
  z-index:-1;
  background:
    linear-gradient(135deg, rgba(26,26,46,0.92) 0%, rgba(18,26,51,0.92) 100%);
}

/* ===========================
   Buttons
   =========================== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 12px 18px;
  border-radius: 12px;
  font-weight:700;
  text-decoration:none;
  border: 1px solid transparent;
  cursor:pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), opacity var(--transition);
  user-select:none;
}

.btn.primary{
  background: linear-gradient(135deg, var(--primary) 0%, #6c86ff 100%);
  color:#fff;
  box-shadow: var(--shadow-soft);
}
.btn.primary:hover{ transform: translateY(-2px); }

.btn.secondary{
  background: linear-gradient(135deg, var(--secondary) 0%, #ff845f 100%);
  color:#fff;
  box-shadow: var(--shadow-soft);
}
.btn.secondary:hover{ transform: translateY(-2px); }

.btn.outline{
  background: transparent;
  border-color: rgba(255,255,255,0.20);
  color: var(--text);
}
.btn.outline:hover{
  transform: translateY(-2px);
  border-color: rgba(74,107,255,0.65);
}

/* ===========================
   Navbar
   =========================== */
.site-header{ height: var(--nav-h); }

.navbar{
  position:fixed;
  top:0; left:0;
  width:100%;
  z-index:1000;
  height: var(--nav-h);
  display:flex;
  align-items:center;
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled{
  background: rgba(10,14,30,0.70);
  backdrop-filter: blur(14px);
  box-shadow: 0 14px 30px rgba(0,0,0,0.25);
}

.navbar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 16px;
}

.brand{ display:flex; align-items:center; text-decoration:none; }
.logo{ height:40px; width:auto; }

.nav-menu{
  display:flex;
  align-items:center;
  gap: 22px;
}

.nav-link{
  text-decoration:none;
  font-weight:700;
  color: rgba(233,236,255,0.88);
  position:relative;
  transition: color var(--transition);
}
.nav-link:hover{ color:#fff; }
.nav-link.is-active{ color: var(--primary); }
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:0; bottom:-8px;
  width:100%;
  height:2px;
  background: var(--primary);
  border-radius:999px;
}

.nav-btn{
  text-decoration:none;
  background: rgba(74,107,255,0.18);
  border: 1px solid rgba(74,107,255,0.55);
  padding: 10px 14px;
  border-radius: 12px;
  font-weight:800;
  transition: background var(--transition), transform var(--transition);
}
.nav-btn:hover{
  background: rgba(74,107,255,0.30);
  transform: translateY(-1px);
}

/* Mobile toggle */
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  cursor:pointer;
  padding: 10px;
}
.nav-toggle span{
  display:block;
  width:100%;
  height:3px;
  border-radius:999px;
  background:#fff;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle span + span{ margin-top:6px; }
.nav-toggle.is-active span:nth-child(1){ transform: translateY(9px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2){ opacity: 0; }
.nav-toggle.is-active span:nth-child(3){ transform: translateY(-9px) rotate(-45deg); }

/* ===========================
   Sections
   =========================== */
.hero{
  padding-top: calc(var(--nav-h) + 40px);
  padding-bottom: 40px;
  position:relative;
  overflow:hidden;
}

.hero .container{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items:center;
  min-height: calc(100vh - var(--nav-h) - 40px);
}

.hero-content h1{
  font-size: clamp(2rem, 3.6vw, 3.1rem);
  line-height: 1.1;
}
.subtitle{
  font-size: clamp(1rem, 1.35vw, 1.15rem);
  margin-bottom: 20px;
  color: rgba(233,236,255,0.80);
}

.cta-buttons{
  display:flex;
  gap: 12px;
  flex-wrap:wrap;
  margin: 18px 0 16px 0;
}

.hero-badges{
  list-style:none;
  padding:0;
  margin: 18px 0 0 0;
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
}
.hero-badges li{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  color: rgba(233,236,255,0.88);
  font-weight:700;
  font-size: 0.95rem;
}

.hero-image{
  filter: drop-shadow(0 25px 45px rgba(0,0,0,0.35));
  animation: float 3.2s ease-in-out infinite;
}

@keyframes float{
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-14px); }
}

/* wave (svg inline, já “pronto” sem ficheiro extra) */
.hero-wave{
  position:absolute;
  left:0; bottom:-1px;
  width:100%;
  height: 120px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28c70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08c36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' fill='rgba(255,255,255,0.10)'/%3E%3Cpath d='M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05C99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8c40.92-19,84.73-46,130.83-49.67c36.26-2.85,70.9,9.42,98.6,31.56c31.77,25.39,62.32,62,103.63,73c40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84c30.2,8.66,59,6.17,87.09-7.5c22.43-10.89,48-26.93,60.65-49.24V0Z' fill='rgba(255,255,255,0.15)'/%3E%3C/svg%3E");
  background-size: cover;
  background-repeat:no-repeat;
  pointer-events:none;
}

/* Features */
.features{
  padding: 80px 0;
}
.section-header{
  text-align:center;
  margin-bottom: 34px;
}
.section-header h2{
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}
.section-header p{
  max-width: 720px;
  margin: 0 auto;
}

.features-grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.feature-card{
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.feature-card:hover{
  transform: translateY(-4px);
  border-color: rgba(74,107,255,0.55);
  background: rgba(255,255,255,0.075);
}
.feature-card .icon{
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display:flex;
  align-items:center;
  justify-content:center;
  background: rgba(74,107,255,0.16);
  border: 1px solid rgba(74,107,255,0.30);
  margin-bottom: 14px;
}
.feature-card h3{
  margin: 0 0 8px 0;
  font-size: 1.18rem;
}
.feature-card p{
  margin:0;
  color: rgba(233,236,255,0.78);
}

/* Pricing */
.pricing{
  padding: 80px 0;
}

.pricing-tabs{
  display:flex;
  justify-content:center;
  flex-wrap:wrap;
  gap: 10px;
  margin: 10px 0 22px 0;
}

.tab{
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.05);
  color: rgba(233,236,255,0.85);
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 800;
  cursor:pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}
.tab:hover{ transform: translateY(-1px); }
.tab.is-active{
  background: rgba(74,107,255,0.20);
  border-color: rgba(74,107,255,0.55);
  color: #fff;
}

.pricing-cards{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.pricing-card{
  position:relative;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.pricing-card:hover{
  transform: translateY(-4px);
  border-color: rgba(74,107,255,0.55);
  background: rgba(255,255,255,0.075);
}

.card-header{
  text-align:center;
  margin-bottom: 14px;
}
.card-header h3{
  margin:0 0 8px 0;
  font-size: 1.25rem;
}
.price{
  font-size: 2.3rem;
  font-weight: 900;
  color: var(--primary);
}
.price span{
  font-size: 1rem;
  font-weight: 700;
  color: rgba(233,236,255,0.75);
  margin-left: 6px;
}

.plan-features{
  list-style:none;
  padding:0;
  margin: 14px 0 16px 0;
  display:grid;
  gap: 10px;
}
.plan-features li{
  display:flex;
  gap: 10px;
  align-items:flex-start;
  color: rgba(233,236,255,0.86);
}
.plan-features i{
  color: rgba(74,107,255,0.95);
  margin-top: 3px;
}

.popular-tag{
  position:absolute;
  top: 14px;
  right: 14px;
  background: rgba(255,107,74,0.16);
  border: 1px solid rgba(255,107,74,0.45);
  color: #fff;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 900;
}

.custom-plan{
  text-align:center;
  margin-top: 18px;
}
.custom-plan a{
  color: var(--primary);
  font-weight: 900;
  text-decoration: none;
}
.custom-plan a:hover{ text-decoration: underline; }

/* Contact */
.contact{
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(18,26,51,0.75) 0%, rgba(10,14,30,0.55) 100%);
  border-top: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.contact-content{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  align-items:start;
}

.contact-info{
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius);
  padding: 22px;
}

.info-item{
  display:flex;
  align-items:center;
  gap: 12px;
  margin: 10px 0;
  color: rgba(233,236,255,0.90);
  font-weight: 800;
}
.info-item i{ color: rgba(74,107,255,0.95); }

.contact-note{
  margin-top: 14px;
  font-size: 0.98rem;
}

.contact-form{
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.field{ margin-bottom: 12px; }
input, textarea{
  width:100%;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(0,0,0,0.25);
  color: #fff;
  padding: 12px 12px;
  font: inherit;
  transition: border-color var(--transition), background var(--transition);
}
input::placeholder, textarea::placeholder{ color: rgba(233,236,255,0.65); }
input:focus, textarea:focus{
  border-color: rgba(74,107,255,0.70);
  background: rgba(0,0,0,0.30);
}
textarea{
  min-height: 160px;
  resize: vertical;
}

.form-hint{
  margin-top: 10px;
  font-size: 0.92rem;
  color: rgba(233,236,255,0.65);
}

/* Footer */
.footer{
  padding: 60px 0 0;
}
.footer-content{
  display:flex;
  gap: 22px;
  flex-wrap:wrap;
  align-items:flex-start;
  justify-content:space-between;
  padding-bottom: 26px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand{
  max-width: 420px;
}
.footer-brand p{ margin-top: 10px; }

.footer-links{
  display:flex;
  gap: 22px;
  flex-wrap:wrap;
}
.link-group h3{
  margin:0 0 10px 0;
  font-size: 1.15rem;
}
.link-group a{
  display:block;
  text-decoration:none;
  color: rgba(233,236,255,0.75);
  padding: 6px 0;
}
.link-group a:hover{
  color: #fff;
  text-decoration: underline;
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  padding: 18px 0 26px;
}
.social-links{
  display:flex;
  gap: 10px;
}
.social-links a{
  width: 42px;
  height: 42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.05);
  transition: transform var(--transition), border-color var(--transition);
}
.social-links a:hover{
  transform: translateY(-2px);
  border-color: rgba(74,107,255,0.55);
}

/* Back to top */
.back-to-top{
  position:fixed;
  right: 22px;
  bottom: 22px;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  border: 1px solid rgba(74,107,255,0.55);
  background: rgba(74,107,255,0.18);
  color: #fff;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition), background var(--transition);
  z-index: 1200;
}
.back-to-top.is-active{
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover{
  background: rgba(74,107,255,0.28);
}

/* Toast */
.toast{
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.65);
  border: 1px solid rgba(255,255,255,0.12);
  color: #fff;
  padding: 10px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
  z-index: 1300;
}

/* noscript box */
.noscript{
  position: fixed;
  left: 12px;
  bottom: 12px;
  background: rgba(0,0,0,0.72);
  color: #fff;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  z-index: 1400;
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 992px){
  .hero .container{
    grid-template-columns: 1fr;
    min-height: unset;
    padding-bottom: 30px;
  }
  .hero-image{ max-width: 520px; margin: 0 auto; }
  .features-grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pricing-cards{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-content{ grid-template-columns: 1fr; }
}

@media (max-width: 768px){
  :root{ --nav-h: 76px; }

  .nav-toggle{ display:inline-flex; align-items:center; justify-content:center; }

  .nav-menu{
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    height: calc(100vh - var(--nav-h));
    display:flex;
    flex-direction:column;
    justify-content:center;
    gap: 20px;
    background: rgba(10,14,30,0.82);
    backdrop-filter: blur(18px);
    transform: translateX(-105%);
    transition: transform var(--transition-slow);
    padding: 22px;
    border-top: 1px solid rgba(255,255,255,0.10);
  }
  .nav-menu.is-open{ transform: translateX(0); }

  .nav-link{ font-size: 1.15rem; }
  .nav-btn{ text-align:center; }

  .features-grid{ grid-template-columns: 1fr; }
  .pricing-cards{ grid-template-columns: 1fr; }

  .cta-buttons{ flex-direction:column; }
  .btn{ width:100%; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ transition: none !important; }
  .hero-image{ animation: none !important; }
}