*{box-sizing:border-box}

:root{
  color-scheme: dark;
  --bg:#050a17;
  --bg-alt:#0d1427;
  --panel:#121b33;
  --panel-strong:#1d2742;
  --muted:#8a93a6;
  --text:#f1f5ff;
  --accent:#60a5fa;
  --accent-strong:#3b82f6;
  --shadow:0 30px 60px rgba(4,10,27,.35);
  --input-bg:rgba(255,255,255,.05);
  --input-bd:rgba(255,255,255,.18);
  --input-bd-focus:#60a5fa;
  --input-text:#f8fbff;
  --input-placeholder:#b1bad4;
}

html,body{
  margin:0;
  padding:0;
  min-height:100%;
  background:radial-gradient(140% 120% at 10% -10%,rgba(96,165,250,.2) 0,transparent 45%),
             radial-gradient(120% 110% at 110% 10%,rgba(251,191,36,.12) 0,transparent 55%),
             linear-gradient(180deg,#040712,#0b1226 38%,#050a17 100%);
  color:var(--text);
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
}

.app-header{
  padding:32px 20px 12px;
  max-width:1280px;
  margin:auto;
}

.top-bar{
  display:flex;
  justify-content:flex-end;
  margin-bottom:12px;
}

.back-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:10px 16px;
  border-radius:999px;
  text-decoration:none;
  font-size:14px;
  font-weight:600;
  color:var(--text);
  background:rgba(37,99,235,.18);
  border:1px solid rgba(96,165,250,.35);
  box-shadow:0 12px 28px rgba(37,99,235,.25);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}

.back-link:hover{transform:translateY(-1px);box-shadow:0 18px 36px rgba(37,99,235,.35);border-color:var(--accent-strong)}

.brand{
  display:flex;
  align-items:center;
  gap:20px;
  padding:18px 22px;
  border-radius:24px;
  background:linear-gradient(135deg,rgba(59,130,246,.25),rgba(59,130,246,.05));
  border:1px solid rgba(96,165,250,.25);
  box-shadow:var(--shadow);
}

.logo{height:52px;filter:drop-shadow(0 8px 18px rgba(59,130,246,.45))}

.muted{color:var(--muted);margin-top:4px;font-size:15px}

.layout{
  max-width:1400px;
  margin:16px auto 48px;
  display:grid;
  gap:24px;
  padding:0 20px;
}

.sidebar{
  position:sticky;
  top:18px;
  align-self:start;
  background:linear-gradient(160deg,rgba(15,23,42,.65),rgba(15,23,42,.35));
  border-radius:22px;
  border:1px solid rgba(148,163,184,.25);
  padding:22px 20px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(18px);
}

.sidebar-title{
  margin:0 0 16px;
  font-size:13px;
  color:#cbd5f5;
  letter-spacing:.32px;
  text-transform:uppercase;
}

.filters{display:grid;gap:16px}

.filter{
  display:flex;
  flex-direction:column;
  gap:6px;
  background:rgba(6,12,24,.45);
  border:1px solid rgba(148,163,184,.22);
  padding:14px 16px;
  border-radius:16px;
  transition:border .2s ease,transform .2s ease;
}

.filter:focus-within{
  border-color:var(--accent-strong);
  transform:translateY(-1px);
}

.filter label{font-size:12px;letter-spacing:.4px;color:var(--muted)}

/* Inputs y selects con alto contraste */
.filter select,.filter input{
  padding:10px;border-radius:10px;
  border:1px solid var(--input-bd);
  background:var(--input-bg);
  color:var(--input-text);
  outline:none;
  appearance:none;
}
.filter select:focus,.filter input:focus{border-color:var(--input-bd-focus); box-shadow:0 0 0 2px rgba(59,130,246,.25)}
.filter input::placeholder{color:var(--input-placeholder)}
/* Opciones del desplegable (mejora contraste en la mayoría de navegadores) */
.filter select option{
  background:var(--panel);
  color:var(--input-text);
}
/* Para Windows/Chrome a veces ayuda forzar color del listbox */
select::-ms-expand{background:transparent;color:var(--input-text)}
select:-internal-list-box, select::-webkit-listbox{
  background:var(--panel); color:var(--input-text);
}

.actions{display:flex;gap:12px}

button{
  border:none;
  border-radius:12px;
  padding:12px 16px;
  font-weight:600;
  cursor:pointer;
  background:linear-gradient(135deg,var(--accent-strong),#1d4ed8);
  color:white;
  letter-spacing:.2px;
  box-shadow:0 18px 40px rgba(59,130,246,.25);
  transition:transform .2s ease,box-shadow .2s ease;
}

button:hover{transform:translateY(-1px);box-shadow:0 20px 40px rgba(59,130,246,.35)}

button.secondary{
  background:transparent;
  border:1px solid rgba(148,163,184,.35);
  color:var(--text);
  box-shadow:none;
}

.results{display:grid;gap:20px}
.category-title{
  grid-column:1/-1;
  margin:12px 0 4px;
  padding:10px 14px;
  border-radius:14px;
  border:1px solid rgba(148,163,184,.32);
  background:linear-gradient(135deg,rgba(59,130,246,.18),rgba(59,130,246,.05));
  color:#dbeafe;
  font-size:15px;
  letter-spacing:.3px;
  text-transform:uppercase;
}

.card{
  background:linear-gradient(180deg,rgba(15,23,42,.75),rgba(15,23,42,.35));
  border:1px solid rgba(148,163,184,.22);
  border-radius:24px;
  overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  backdrop-filter:blur(12px);
  box-shadow:0 14px 40px rgba(5,11,23,.45);
}

.card:hover{transform:translateY(-4px);box-shadow:0 26px 60px rgba(5,11,23,.55);border-color:rgba(96,165,250,.4)}

.card-media{padding:4px 4px 0;background:linear-gradient(160deg,rgba(37,99,235,.45),rgba(59,130,246,.05));}

.card-body{padding:18px 20px 22px}

.title{margin:10px 0 4px;font-size:20px}

.meta{list-style:none;padding:0;margin:12px 0 18px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;font-size:14px}

.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}

.pill{
  font-size:12px;
  padding:5px 10px;
  border-radius:999px;
  border:1px solid rgba(148,163,184,.35);
  color:#d1d8f5;
  background:rgba(148,163,184,.12);
}

.pill-estado.ok{border-color:rgba(16,185,129,.7);background:rgba(16,185,129,.12);color:#a7f3d0}
.pill-estado.no{border-color:rgba(239,68,68,.7);background:rgba(239,68,68,.12);color:#fecaca}

.subtext{color:#cbd5f5;font-size:14px;margin:4px 0 10px}
.subtext .label{opacity:.7;letter-spacing:.2px}

.cta-row{display:flex;flex-wrap:wrap;gap:10px}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  text-decoration:none;
  font-size:14px;
  padding:10px 14px;
  border-radius:12px;
  border:1px solid rgba(148,163,184,.35);
  color:var(--text);
  background:rgba(15,23,42,.6);
  transition:border-color .2s ease,transform .2s ease;
}

.btn:hover{border-color:var(--accent-strong);transform:translateY(-1px)}

.btn.secondary{background:rgba(15,23,42,.35);color:#cbd5f5}

.btn.tertiary{
  background:rgba(59,130,246,.18);
  border-color:rgba(96,165,250,.45);
  color:#dbeafe;
}

.btn.whatsapp{
  background:linear-gradient(135deg,#25d366,#128c7e);
  border-color:rgba(37,211,102,.6);
  color:#f0fff4;
  box-shadow:0 18px 38px rgba(18,140,126,.35);
}

.btn.share{
  background:linear-gradient(135deg,#f59e0b,#d97706);
  border-color:rgba(245,158,11,.6);
  color:#fff9eb;
  box-shadow:0 16px 34px rgba(217,119,6,.35);
}

.btn.share:hover{border-color:#c2410c;box-shadow:0 20px 40px rgba(194,65,12,.45)}

.btn:disabled,
.btn[aria-disabled="true"]{
  opacity:.6;
  cursor:not-allowed;
  transform:none;
  box-shadow:none;
}

.btn.whatsapp:hover{
  border-color:#0b6f5c;
  box-shadow:0 24px 50px rgba(18,140,126,.45);
}

.code{margin-top:18px;color:#9caad9;font-size:12px;display:flex;align-items:center;gap:10px}

.copy{
  background:transparent;
  border:1px solid rgba(148,163,184,.45);
  color:#e2e8f0;
  padding:6px 10px;
  border-radius:8px;
  cursor:pointer;
  transition:border-color .2s ease,transform .2s ease;
}

.copy:hover{border-color:var(--accent-strong);transform:translateY(-1px)}

.loading{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:220px;
  border-radius:20px;
  border:1px dashed rgba(148,163,184,.35);
  color:#cbd5f5;
  background:rgba(15,23,42,.35);
}

.yt-wrap{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;border-radius:20px;background:radial-gradient(circle at center,rgba(59,130,246,.6) 0,rgba(15,23,42,.8) 55%,rgba(5,10,23,1) 100%)}

.yt-thumb{
  position:relative;
  display:flex;
  width:100%;
  height:100%;
  border-radius:inherit;
  overflow:hidden;
  text-decoration:none;
  align-items:center;
  justify-content:center;
  color:var(--text);
  isolation:isolate;
  transition:transform .2s ease,box-shadow .2s ease;
}

.yt-thumb:focus-visible{outline:2px solid var(--accent-strong);outline-offset:4px}

.yt-thumb:hover{transform:scale(1.01);box-shadow:inset 0 0 0 120px rgba(2,6,23,.25)}

.yt-thumb-img{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.92;
  transition:opacity .2s ease;
  filter:grayscale(10%) saturate(120%);
}

.yt-thumb:hover .yt-thumb-img{opacity:.78}

.yt-thumb-overlay{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  padding:14px 18px;
  border-radius:999px;
  background:rgba(2,6,23,.65);
  border:1px solid rgba(96,165,250,.35);
  box-shadow:0 24px 50px rgba(8,20,52,.6);
  font-weight:600;
  letter-spacing:.3px;
}

.play-icon{font-size:20px}

.yt-thumb-text{font-size:13px;text-transform:uppercase;color:#dbeafe;letter-spacing:1.1px}

.app-footer{padding:32px 20px 48px;text-align:center;color:#94a3b8;font-size:13px}

/* Desktop layout */
@media (min-width:1024px){
  .layout{grid-template-columns:320px 1fr}
  .results{grid-template-columns:repeat(12,1fr)}
  .card{grid-column:span 6}
  .yt-wrap{min-height:360px}
}

@media (min-width:1600px){
  .layout{grid-template-columns:360px 1fr}
  .card{grid-column:span 4}
  .yt-wrap{min-height:420px}
}

@media (max-width:1023px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:static}
}

@media (max-width:720px){
  .top-bar{justify-content:flex-start;margin-bottom:16px}
  .brand{flex-direction:column;align-items:flex-start;gap:16px}
  .logo{height:48px}
  .card{border-radius:20px}
  .card-body{padding:16px 18px 20px}
  .meta{grid-template-columns:1fr}
  .pill-row{gap:6px}
  .cta-row{flex-direction:column;align-items:stretch}
  button{width:100%}
}