/* 
  Estilos principais da galeria
  - Layout em grid com até 4 colunas
  - Cards com borda suave, sombra, hover com leve zoom
  - Responsivo para mobile
*/
:root{
  --bg:#0f1217;
  --surface:#171b22;
  --surface-2:#1e242d;
  --text:#e6e9ef;
  --muted:#aab1bb;
  --primary:#4f83ff;
  --success:#2ecc71;
  --danger:#ff4d4f;
  --warning:#ffb020;
  --radius:14px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  color:var(--text);
  background:linear-gradient(180deg, #0b0e13, var(--bg));
}
a{color:inherit;text-decoration:none}

/* Header */
.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter:saturate(150%) blur(10px);
  background:rgba(15,18,23,.75);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.nav{
  max-width:1100px; margin:0 auto; padding:14px 20px;
  display:flex; gap:14px; align-items:center; justify-content:space-between;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:700; letter-spacing:.2px;
}
.brand .logo{
  width:36px; height:36px; border-radius:10px;
  background:linear-gradient(135deg, var(--primary), #6ddcff);
  box-shadow:0 6px 18px rgba(79,131,255,.35);
}
.nav-actions{display:flex; gap:10px; align-items:center}
.btn{
  background:var(--surface-2);
  border:1px solid rgba(255,255,255,.08);
  color:var(--text);
  padding:10px 14px; border-radius:12px;
  display:inline-flex; align-items:center; gap:8px;
  transition:.2s ease; cursor:pointer;
}
.btn:hover{transform:translateY(-1px); background:#242b36}
.btn.primary{background:var(--primary); border-color:transparent}
.btn.primary:hover{filter:brightness(1.05)}
.audio-controls{
  display:flex; align-items:center; gap:8px;
  padding-left:6px; border-left:1px solid rgba(255,255,255,.08);
}
.audio-status{font-size:.85rem}

/* Container */
.container{max-width:1100px; margin:20px auto; padding:0 20px}

/* Filtros */
.filters{
  display:flex; gap:10px; align-items:center; flex-wrap:wrap;
  background:var(--surface);
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px; padding:12px;
}
.select, .input{
  background:var(--surface-2);
  color:var(--text);
  border:1px solid rgba(255,255,255,.1);
  border-radius:12px; padding:10px 12px;
  outline:none; min-width:170px;
}
.select:focus, .input:focus{border-color:var(--primary)}

/* Grid da galeria: máx 4 colunas */
.grid{
  margin-top:16px;
  display:grid; grid-gap:14px;
  grid-template-columns:repeat(4, 1fr);
}
@media (max-width:1000px){.grid{grid-template-columns:repeat(3, 1fr)}}
@media (max-width:700px){.grid{grid-template-columns:repeat(2, 1fr)}}
@media (max-width:480px){.grid{grid-template-columns:1fr}}

/* Card */
.card{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--surface);
  border:1px solid rgba(255,255,255,.06);
  box-shadow:var(--shadow);
  transform:translateZ(0);
}
.media{
  position:relative;
  aspect-ratio:1/1; /* quadrado por padrão */
  overflow:hidden;
}
.media img, .media video{
  width:100%; height:100%; object-fit:cover;
  transition:transform .35s ease;
  display:block;
}
.card:hover .media img,
.card:hover .media video{transform:scale(1.04)}
.card .meta{
  display:flex; align-items:center; justify-content:space-between;
  padding:10px 12px; gap:8px;
  background:linear-gradient(180deg, rgba(0,0,0,.0), rgba(0,0,0,.2));
}
.category{
  font-size:.85rem; color:var(--muted);
}
.type-badge{
  padding:4px 8px; border-radius:999px; font-size:.75rem;
  background:rgba(255,255,255,.08); color:var(--text);
  border:1px solid rgba(255,255,255,.08);
}

/* Indicador de vídeo */
.video-indicator{
  position:absolute; right:10px; top:10px;
  width:36px; height:36px; border-radius:50%;
  display:grid; place-items:center;
  background:rgba(0,0,0,.45); color:#fff;
  border:1px solid rgba(255,255,255,.2);
}
.video-indicator::before{
  content:"";
  display:block; width:0; height:0;
  border-left:12px solid #fff;
  border-top:7px solid transparent;
  border-bottom:7px solid transparent;
  margin-left:3px;
}

/* Modal/Lightbox */
.lightbox{
  position:fixed; inset:0; z-index:1000;
  background:rgba(0,0,0,.75);
  backdrop-filter:blur(6px);
  display:none;
}
.lightbox.open{display:grid; place-items:center}
.lightbox-inner{
  width:min(92vw, 980px);
  background:var(--surface);
  border-radius:18px; overflow:hidden;
  box-shadow:0 20px 60px rgba(0,0,0,.45);
  border:1px solid rgba(255,255,255,.08);
}
.lightbox-media{
  background:#000;
  max-height:75vh;
  overflow:hidden;
  position:relative;
}
.lightbox-media img, .lightbox-media video{
  width:100%; height:auto; display:block; object-fit:contain;
  max-height:75vh;
  transition:transform .25s ease;
}
.lightbox-media img{cursor:zoom-in; user-select:none}
.lightbox-media img.zoomed{cursor:grab}
.lightbox-media img.grabbing{cursor:grabbing}
.lightbox-toolbar{
  display:flex; align-items:center; justify-content:space-between;
  padding:10px; gap:8px; background:var(--surface-2);
  border-top:1px solid rgba(255,255,255,.06);
}
.lightbox-nav{
  display:flex; gap:8px;
}
.icon-btn{
  width:40px; height:40px; border-radius:12px;
  background:var(--surface); border:1px solid rgba(255,255,255,.08);
  display:grid; place-items:center; color:var(--text); cursor:pointer;
  transition:.2s ease;
}
.icon-btn:hover{background:#242b36; transform:translateY(-1px)}

/* Mensagens */
.alert{
  display:flex; align-items:center; gap:10px;
  border-radius:12px; padding:10px 12px; margin:10px 0;
  border:1px solid rgba(255,255,255,.08);
}
.alert.success{background:rgba(46,204,113,.12); color:#baf2d2}
.alert.error{background:rgba(255,77,79,.12); color:#ffd2d3}
.alert.warning{background:rgba(255,176,32,.12); color:#ffe1b0}

/* Placeholder */
.placeholder{
  border:2px dashed rgba(255,255,255,.15);
  border-radius:16px; padding:24px;
  text-align:center; color:var(--muted);
  background:var(--surface);
}

/* Footer */
.site-footer{
  margin-top:30px; color:var(--muted);
  border-top:1px solid rgba(255,255,255,.06);
  background:var(--surface);
}
.site-footer .container{padding:16px 20px}
.muted{color:var(--muted)}
.auth-wrap{min-height:50vh; display:grid; place-items:center}
.auth-card{
  width:min(96vw, 420px);
  background:var(--surface);
  border:1px solid rgba(255,255,255,.08);
  border-radius:18px;
  box-shadow:var(--shadow);
  padding:18px;
}
.auth-header{display:flex; flex-direction:column; gap:8px; margin-bottom:10px}
.auth-actions{display:flex; justify-content:flex-end; margin-top:10px}
.auth-input-group{position:relative; display:flex}
.auth-input-group .auth-input{flex:1; padding-right:44px}
.auth-input-group .icon-btn{position:absolute; right:6px; top:50%; transform:translateY(-50%)}
.hint{margin-top:8px; font-size:.85rem; color:var(--muted)}

@media (max-width:1000px){
  .nav{padding:12px 16px}
  .container{padding:0 16px}
}
@media (max-width:700px){
  .nav{flex-direction:column; align-items:stretch; gap:10px}
  .nav-actions{flex-wrap:wrap; justify-content:flex-start}
  .btn{padding:8px 12px}
  .icon-btn{width:36px; height:36px; border-radius:10px}
  .audio-controls{padding-left:0; border-left:none}
  .audio-controls [data-audio-volume]{width:100px !important}
  .lightbox-inner{width:96vw}
}
@media (max-width:480px){
  .brand .logo{width:30px; height:30px}
  .container{padding:0 12px}
  .select, .input{min-width:140px}
  .grid{grid-gap:12px}
  .lightbox-media{max-height:70vh}
  .lightbox-media img, .lightbox-media video{max-height:70vh}
}