:root{
  --bg:#0f172a;
  --panel:#020617;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --border:rgba(148,163,184,0.22);
  --border2:#1e293b;
  --ring:#38bdf8;
  --shadow: 0 15px 35px rgba(0,0,0,0.45);
  --shadow2: 0 15px 35px rgba(0,0,0,0.55);
  --radius:16px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(1200px 500px at 20% 0%, rgba(34,197,94,0.10), transparent 60%),
              radial-gradient(1200px 500px at 80% 0%, rgba(34,211,238,0.10), transparent 60%),
              var(--bg);
  color:var(--text);
}

a{ color:inherit; }
code{ color:#cbd5f5; }

.container{
  max-width: 1040px;
  margin: 0 auto;
  padding: 26px 16px 44px;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom: 14px;
  gap: 12px;
}

.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid rgba(148,163,184,0.35);
  color: var(--muted);
  background: rgba(2,6,23,0.55);
  backdrop-filter: blur(10px);
}

.card{
  background: linear-gradient(180deg, rgba(2,6,23,0.92), rgba(2,6,23,0.82));
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

h1{
  margin: 0 0 6px 0;
  font-size: 28px;
  letter-spacing: -0.02em;
}

.subtitle{
  margin: 0 0 18px 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.section-title{
  font-size: 16px;
  margin: 18px 0 10px;
  letter-spacing: -0.01em;
}

hr.sep{
  border: none;
  border-top: 1px solid rgba(31,41,55,0.85);
  margin: 18px 0;
}

/* form */
.field-group{ margin-bottom: 14px; }
label{
  display:block;
  margin-bottom: 6px;
  font-size: 13px;
  color: #cbd5f5;
}

select, input[type="file"]{
  width:100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #1f2937;
  background: rgba(2,6,23,0.9);
  color: var(--text);
  font-size: 14px;
}
select:focus, input[type="file"]:focus{
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor:pointer;
  border: 1px solid transparent;
  transition: transform .08s ease, opacity .12s ease, background .12s ease, border-color .12s ease;
  user-select:none;
}

.btn:active{ transform: translateY(1px); }

.btn-primary{
  background: linear-gradient(135deg, #22c55e, #22d3ee);
  color: #020617;
  box-shadow: 0 10px 25px rgba(34,197,94,0.35);
}
.btn-primary:hover{ opacity: .93; }

.btn-secondary{
  background: rgba(2,6,23,0.35);
  border-color: rgba(148,163,184,0.35);
  color: var(--text);
}
.btn-secondary:hover{
  background: rgba(148,163,184,0.10);
  border-color: rgba(56,189,248,0.6);
}

/* category list */
.category-list{
  list-style:none;
  padding:0;
  margin: 0;
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}
.category-list a{
  display:block;
  padding: 10px 12px;
  border-radius: 999px;
  text-decoration:none;
  font-size: 13px;
  color: var(--text);
  background: rgba(2,6,23,0.6);
  border: 1px solid var(--border2);
  transition: border-color .12s ease, background .12s ease, transform .08s ease;
}
.category-list a:hover{
  border-color: rgba(56,189,248,0.75);
  background: radial-gradient(circle at top left, rgba(34,197,94,0.12), rgba(2,6,23,0.6));
}
.category-list a:active{ transform: translateY(1px); }

.footer-note{
  margin-top: 18px;
  font-size: 12px;
  color: #6b7280;
}

/* gallery page */
.breadcrumbs{
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
}
.header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.header h1{
  font-size: 22px;
  margin: 0;
}

.layout{
  display:grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 18px;
  margin-top: 14px;
}

.card-outline{
  background: linear-gradient(180deg, rgba(2,6,23,0.92), rgba(2,6,23,0.82));
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow2);
  border: 1px solid rgba(30,64,175,0.55);
}

.images-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.image-card{
  background: rgba(2,6,23,0.7);
  border-radius: 14px;
  border: 1px solid rgba(31,41,55,0.9);
  padding: 10px;
  overflow:hidden;
}
.image-card img{
  width: 100%;
  border-radius: 10px;
  display:block;
  margin-bottom: 8px;
}

.image-url{
  font-size: 11px;
  color: var(--muted);
  word-break: break-all;
  background: rgba(2,6,23,0.55);
  border-radius: 10px;
  padding: 8px;
  border: 1px dashed rgba(55,65,81,0.85);
}

.empty{
  font-size: 14px;
  color: var(--muted);
  margin: 0;
}

.category-pill{
  display:inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid rgba(148,163,184,0.35);
  color: var(--muted);
  background: rgba(2,6,23,0.45);
}

.hint{
  font-size: 11px;
  color: var(--muted);
  margin-top: 6px;
}

@media (max-width: 960px){
  .layout{ grid-template-columns: 1fr; }
  h1{ font-size: 24px; }
  .header{ flex-direction: column; align-items:flex-start; }
}