:root{
  --bg: linear-gradient(180deg,#f6f8fb 0%, #eef2f8 100%);
  --card: #ffffff;
  --text: #07122a;
  --muted: #556779;
  --accent-start: #06b6d4;
  --accent-end: #7c3aed;
  --glass: rgba(255,255,255,0.6);
  --radius: 14px;
  --shadow: 0 6px 18px rgba(7,18,42,0.08);
  --glass-border: rgba(7,18,42,0.04);
  --accent: linear-gradient(90deg,var(--accent-start),var(--accent-end));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}
[data-theme="dark"]{
  --bg: linear-gradient(180deg,#071120 0%,#02101a 100%);
  --card: rgba(255,255,255,0.03);
  --text: #e6edf3;
  --muted: #9fb4c8;
  --glass: rgba(255,255,255,0.03);
  --shadow: 0 8px 30px rgba(0,0,0,0.6);
  --glass-border: rgba(255,255,255,0.04);
  --accent-start: #06b6d4;
  --accent-end: #7c3aed;
  --accent: linear-gradient(90deg,var(--accent-start),var(--accent-end));
}

/* layout */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  transition:background .45s ease, color .35s ease;
  padding:28px;
  display:flex;
  justify-content:center;
}
.container{
  width:100%;
  max-width:1100px;
}

/* header */
.header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  margin-bottom:18px;
}
.brand{display:flex;align-items:center;gap:14px}
.logo{
  width:64px;height:64px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:20px;
  background:var(--accent);
  color:white;box-shadow:var(--shadow);
  border-radius:16px;
}
.brand h1{margin:0;font-size:20px;letter-spacing:0.2px}
.lead{font-size:13px;color:var(--muted)}

/* nav */
.nav{display:flex;gap:10px;align-items:center}
.btn{
  background:transparent;border:1px solid var(--glass-border);padding:10px 14px;border-radius:12px;
  cursor:pointer;text-decoration:none;color:var(--text);font-weight:600;
  transition:transform .18s ease, box-shadow .18s ease, background .2s;
}
.btn:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.toggle{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:12px;border:1px solid var(--glass-border);background:linear-gradient(180deg,rgba(255,255,255,0.02),transparent);cursor:pointer}

/* hero / grid */
.hero{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-top:8px}
.left{flex:1}
.right{width:320px;min-width:240px}
.card{background:var(--card);padding:18px;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--glass-border);transition:transform .25s cubic-bezier(.2,.9,.3,1),box-shadow .25s}
.card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(7,18,42,0.12)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:16px}

/* card inner */
.card img.thumb{width:100%;height:140px;object-fit:cover;border-radius:10px}
.card h3{margin:10px 0 6px;font-size:16px}
.card p{margin:0;color:var(--muted);font-size:14px;line-height:1.45}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.tag{font-size:12px;padding:6px 8px;border-radius:999px;background:transparent;border:1px solid var(--glass-border);color:var(--muted)}

/* footer */
.footer{margin-top:28px;color:var(--muted);font-size:13px;text-align:center;padding:18px 0;border-top:1px solid var(--glass-border)}

/* search / inputs */
input[type="text"], select{
  padding:10px 12px;border-radius:10px;border:1px solid var(--glass-border);background:transparent;color:var(--text);
  outline:none;min-width:160px;transition:box-shadow .18s;
}
input[type="text"]:focus, select:focus{box-shadow:0 8px 20px rgba(7,18,42,0.06)}

.search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1rem auto;
  max-width: 500px;
  padding: 0.75rem 1rem;
  background: #111827; /* fundo escuro */
  border-radius: 0.75rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

.search input {
  flex: 1;
  padding: 0.65rem 1rem;
  background: #1f2937; /* cinza mais claro que o fundo */
  border: 1px solid #374151;
  border-radius: 0.5rem;
  color: #f3f4f6; /* texto claro */
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.3s, background 0.3s;
}

.search input:focus {
  border-color: #3b82f6; /* azul suave */
  background: #111827;
}

.search .btn {
  padding: 0.65rem 1.2rem;
  background: linear-gradient(135deg, #3b82f6, #2563eb); /* gradiente azul */
  border: none;
  border-radius: 0.5rem;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.2s, opacity 0.2s;
}

.search .btn:hover {
  opacity: 0.9;
  transform: scale(1.05);
}

.search .btn:active {
  transform: scale(0.97);
}


/* responsive tweaks */
@media (max-width:900px){
  .hero{flex-direction:column}
  .right{width:100%}
}
@media (max-width:600px){
  body{padding:16px}
  .logo{width:52px;height:52px;font-size:18px}
  .nav{flex-wrap:wrap;justify-content:flex-end}
}


/* page transitions & animations */
:root{scroll-behavior:smooth}
.fade-enter{opacity:0;transform:translateY(8px);transition:opacity .45s ease, transform .45s ease}
.fade-enter.show{opacity:1;transform:none}
.page-fade-out{opacity:0;transform:translateY(6px);transition:opacity .35s ease, transform .35s ease}
.card{will-change:transform,opacity}
.card:hover{transform:translateY(-8px) translateZ(0) scale(1.01)}

/* subtle 3D tilt on hover */
.card[data-tilt="true"]{transform-style:preserve-3d;transition:transform .22s cubic-bezier(.2,.9,.3,1)}
.card[data-tilt="true"]:hover{transform:perspective(800px) rotateX(3deg) rotateY(-4deg) translateY(-6px)}

/* entrance */
@keyframes floatUp { from {opacity:0; transform: translateY(14px);} to {opacity:1; transform:none;} }
.fade-in { animation: floatUp .6s ease both; }

/* Centralização do conteúdo principal */
.main-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 2rem auto;
  max-width: 900px;
  width: 100%;
}

.hero-subcard {
  text-align: center;
  padding: 2rem;
  width: 100%;
}

.hero-subcard h2 {
  margin-bottom: 0.5rem;
}