/* ==========================================================================
   Base comum para as landing pages de demonstração do portfolio Nocton
   Cada demo sobrescreve --d-accent / --d-accent-2 / --d-bg no próprio <style>
   ========================================================================== */
:root{
  --d-bg: #0a0b10;
  --d-bg-alt: #101219;
  --d-card: #14161f;
  --d-border: #232838;
  --d-text: #f5f6fa;
  --d-muted: #9aa0b3;
  --d-accent: #8b5cf6;
  --d-accent-2: #22d3ee;
  --d-grad: linear-gradient(120deg, var(--d-accent), var(--d-accent-2));
  --d-whatsapp: #25D366;
  --d-radius: 20px;
}
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0; background: var(--d-bg); color: var(--d-text);
  font-family:'Plus Jakarta Sans','Inter',system-ui,sans-serif; line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{ text-decoration:none; color:inherit; }
img{ max-width:100%; display:block; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4{ font-family:'Sora','Plus Jakarta Sans',sans-serif; letter-spacing:-.02em; line-height:1.15; margin:0; }
p{ margin:0; }
button{ font-family:inherit; cursor:pointer; }

.d-container{ max-width: 1120px; margin:0 auto; padding: 0 24px; }
.d-section{ padding: 90px 0; position:relative; }
.d-section.tight{ padding: 60px 0; }
.d-eyebrow{
  display:inline-flex; align-items:center; gap:8px; font-size:.76rem; font-weight:800;
  text-transform:uppercase; letter-spacing:.14em; color: var(--d-accent-2); margin-bottom:14px;
}
.d-eyebrow::before{ content:''; width:7px; height:7px; border-radius:50%; background: var(--d-grad); }
.d-head{ max-width: 620px; margin-bottom: 46px; }
.d-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.d-head h2{ font-size: clamp(1.7rem,3vw,2.4rem); margin-bottom:12px; }
.d-head p{ color: var(--d-muted); }

.d-btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:15px 28px; border-radius:100px; font-weight:800; font-size:.94rem; border:1px solid transparent;
  transition: transform .2s ease, box-shadow .2s ease;
}
.d-btn-primary{ background: var(--d-grad); color: var(--d-btn-ink, #0a0b10); }
.d-btn-primary:hover{ transform: translateY(-2px); }
.d-btn-ghost{ background: rgba(255,255,255,.04); border-color: var(--d-border); color: var(--d-text); }
.d-btn-ghost:hover{ border-color: var(--d-accent); transform: translateY(-2px); }
.d-btn-wa{ background: var(--d-whatsapp); color:#04170c; }
.d-btn-wa:hover{ transform: translateY(-2px); }
.d-btn-dark{ background:#12141d; color:#fff; border-color:#12141d; }
.d-btn-dark:hover{ transform: translateY(-2px); }

/* nav */
.demo-nav{
  position: sticky; top:0; z-index:50; background: rgba(10,11,16,.75);
  backdrop-filter: blur(14px); border-bottom:1px solid var(--d-border);
}
.demo-nav .d-container{ display:flex; align-items:center; justify-content:space-between; height:74px; }
.demo-nav .logo{ display:flex; align-items:center; gap:10px; font-weight:800; font-size:1.05rem; }
.demo-nav .logo .mark{ width:32px; height:32px; border-radius:9px; background: var(--d-grad); }
.demo-nav .links{ display:flex; gap:30px; }
.demo-nav .links a{ font-size:.88rem; font-weight:600; color: var(--d-muted); }
.demo-nav .links a:hover{ color: var(--d-text); }
.back-to-portfolio{
  position: fixed; top: 18px; left: 18px; z-index: 300;
  display:flex; align-items:center; gap:8px; background: rgba(10,11,16,.85); backdrop-filter: blur(10px);
  border:1px solid var(--d-border); color: var(--d-text); font-size:.8rem; font-weight:700;
  padding: 10px 16px 10px 12px; border-radius:100px; box-shadow: 0 10px 24px -8px rgba(0,0,0,.5);
}
.back-to-portfolio:hover{ border-color: var(--d-accent); }

.demo-badge-tag{
  position:fixed; bottom:18px; left:18px; z-index:300; font-size:.72rem; font-weight:700;
  color: var(--d-muted); background: rgba(10,11,16,.85); border:1px solid var(--d-border);
  padding: 8px 14px; border-radius:100px; backdrop-filter: blur(10px);
}

.wa-float{
  position: fixed; bottom: 26px; right: 26px; z-index: 300;
  width: 58px; height:58px; border-radius:50%; background: var(--d-whatsapp);
  display:flex; align-items:center; justify-content:center; box-shadow: 0 12px 30px -6px rgba(37,211,102,.65);
}
.wa-float:hover{ transform: scale(1.06); }

.glow{ position:absolute; border-radius:50%; filter: blur(90px); opacity:.32; z-index:0; pointer-events:none; }

/* grids */
.d-grid-2{ display:grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items:center; }
.d-grid-3{ display:grid; grid-template-columns: repeat(3,1fr); gap:22px; }
.d-grid-4{ display:grid; grid-template-columns: repeat(4,1fr); gap:20px; }

.d-card{ background: var(--d-card); border:1px solid var(--d-border); border-radius:16px; padding: 28px 24px; }
.d-icon{ width:46px; height:46px; border-radius:12px; background: linear-gradient(135deg, rgba(139,92,246,.18), rgba(34,211,238,.12)); display:flex; align-items:center; justify-content:center; color: var(--d-accent-2); margin-bottom:16px; }

.d-footer{ border-top:1px solid var(--d-border); padding: 40px 0; text-align:center; color: var(--d-muted); font-size:.82rem; }

@media (max-width: 900px){
  .d-grid-2{ grid-template-columns:1fr; }
  .d-grid-3{ grid-template-columns: 1fr 1fr; }
  .d-grid-4{ grid-template-columns: 1fr 1fr; }
  .demo-nav .links{ display:none; }
}
@media (max-width: 560px){
  .d-grid-3, .d-grid-4{ grid-template-columns: 1fr; }
  .d-section{ padding: 60px 0; }
}