:root {
  --bg1: #170b05;
  --bg2: #2a1208;
  --ink: #fef4ec;
  --muted: #d8b9a6;
  --ac1: #ff8a1f;
  --ac2: #ffb100;
  --ac3: #ffc46b;
  --card: rgba(255, 170, 90, 0.08);
  --card-hi: rgba(255, 170, 90, 0.14);
  --border: rgba(255, 190, 120, 0.18);
  --pdf: #ef4444;
  --word: #3b82f6;
  --ppt: #ff8a1f;
  --rad: 16px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(255,138,31,.38), transparent 60%),
    radial-gradient(1000px 500px at -10% 10%, rgba(255,177,0,.28), transparent 55%),
    radial-gradient(900px 600px at 50% 120%, rgba(255,120,40,.18), transparent 55%),
    linear-gradient(160deg, var(--bg1), var(--bg2));
  background-attachment: fixed;
  min-height: 100vh;
}

/* ---------- header ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 26px; flex-wrap: wrap;
  padding: 18px 34px;
  background: rgba(23, 11, 5, 0.78);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 16px; }
.logo {
  width: 52px; height: 52px; border-radius: 15px;
  display: grid; place-items: center;
  font-weight: 800; font-size: 20px; letter-spacing: .5px;
  color: #fff;
  background: linear-gradient(135deg, var(--ac1), var(--ac2));
  box-shadow: 0 6px 18px rgba(255, 138, 31, .45);
}
.logo span { color: #170b05; }
.titles h1 { font-size: 22px; font-weight: 800; line-height: 1.1; }
.titles p { font-size: 13px; color: var(--muted); }
.searchwrap {
  flex: 1; min-width: 300px; max-width: 560px;
  display: flex; align-items: center; gap: 10px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 999px; padding: 11px 18px;
  transition: border-color .2s, box-shadow .2s;
}
.searchwrap:focus-within { border-color: var(--ac1); box-shadow: 0 0 0 3px rgba(255,138,31,.25); }
.searchwrap .ic { width: 18px; height: 18px; fill: var(--muted); }
.searchwrap input {
  width: 100%; background: none; border: none; outline: none;
  color: var(--ink); font-size: 14.5px;
}
.searchwrap input::placeholder { color: var(--muted); }

/* ---------- filters ---------- */
.filters {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  padding: 22px 34px 6px;
}
.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
  border: 1px solid var(--border); background: var(--card);
  color: var(--muted); font-size: 13px; font-weight: 600;
  padding: 8px 15px; border-radius: 999px; cursor: pointer;
  transition: all .18s; letter-spacing: .2px;
}
.chip:hover { background: var(--card-hi); color: var(--ink); }
.chip.active {
  background: linear-gradient(135deg, var(--ac1), var(--ac2));
  color: #170b05; border-color: transparent;
  box-shadow: 0 4px 14px rgba(255, 138, 31, .4);
}
.counts { margin-left: auto; font-size: 13px; color: var(--muted); }

/* ---------- grid ---------- */
main { padding: 22px 34px 80px; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--rad);
  padding: 12px;
  cursor: pointer;
  transition: transform .18s, background .18s, box-shadow .18s;
  display: flex; flex-direction: column; gap: 10px;
  overflow: hidden;
}
.card::after {
  content: ""; position: absolute; inset: 0;
  border-radius: var(--rad);
  background: radial-gradient(400px 120px at 100% 0%, rgba(255,177,0,.16), transparent 60%);
  opacity: 0; transition: opacity .2s; pointer-events: none;
}
.card:hover { transform: translateY(-4px); background: var(--card-hi); box-shadow: var(--shadow); }
.card:hover::after { opacity: 1; }
.card.active { outline: 2px solid var(--ac1); }

.thumb {
  position: relative; height: 160px; border-radius: 13px; overflow: hidden;
  background: repeating-linear-gradient(45deg, rgba(255,255,255,.02), rgba(255,255,255,.02) 10px, transparent 10px, transparent 20px);
  display: grid; place-items: center;
}
.thumb img { width: 100%; height: 100%; object-fit: contain; background: #f4f5fb; }
.thumb .phicon { width: 52px; height: 52px; }
.thumb .phicon .ic { width: 100%; height: 100%; }
.thumb::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,.35));
  pointer-events: none;
}
.badge {
  position: absolute; top: 8px; left: 8px; z-index: 2;
  font-size: 10.5px; font-weight: 800; letter-spacing: .8px; text-transform: uppercase;
  color: #fff; padding: 3px 8px; border-radius: 6px;
  backdrop-filter: blur(4px);
}
.badge.pdf  { background: rgba(239,68,68,.92); }
.badge.word { background: rgba(59,130,246,.92); }
.badge.ppt  { background: rgba(249,115,22,.92); }
.badge.other{ background: rgba(100,116,139,.92); }

.cardname { font-size: 14px; font-weight: 600; line-height: 1.4; min-height: 3.5em; }
.cardname b { color: transparent;
  background: linear-gradient(90deg, var(--ac1), var(--ac2)); -webkit-background-clip: text; background-clip: text;
}
.cardfoot {
  display: flex; align-items: center; gap: 8px;
  font-size: 11.5px; color: var(--muted);
  border-top: 1px solid var(--border); padding-top: 9px;
}
.cardfoot .meta { flex: 1; }
.iconbtn-mini {
  border: 1px solid var(--border); background: var(--card); color: var(--ink);
  width: 30px; height: 30px; border-radius: 9px; cursor: pointer;
  display: grid; place-items: center; transition: all .15s;
}
.iconbtn-mini:hover { background: var(--ac1); border-color: transparent; }
.iconbtn-mini .ic { width: 15px; height: 15px; fill: currentColor; }

.empty { text-align: center; padding: 60px 0; color: var(--muted); }
.empty p { font-size: 18px; color: var(--ink); margin-bottom: 6px; }
.hidden { display: none !important; }

/* ---------- viewer ---------- */
.viewer {
  position: fixed; inset: 0; z-index: 50;
  display: flex; flex-direction: column;
  background: rgba(6, 9, 20, 0.96);
  backdrop-filter: blur(8px);
}
.vheader {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  background: rgba(13,18,38,.9);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.vtitle { font-weight: 700; font-size: 14.5px; max-width: 40vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.vmeta { font-size: 12px; color: var(--muted); white-space: nowrap; }
.vspacer { flex: 1; }
.iconbtn {
  border: none; background: none; color: var(--muted); width: 34px; height: 34px;
  border-radius: 9px; cursor: pointer; display: grid; place-items: center; transition: all .15s;
}
.iconbtn:hover { background: var(--card-hi); color: var(--ink); }
.iconbtn .ic { width: 19px; height: 19px; fill: currentColor; }
.btn.ghost {
  background: var(--card); color: var(--ink);
  border: 1px solid var(--border); border-radius: 9px;
  padding: 7px 13px; font-size: 12.5px; font-weight: 600; cursor: pointer;
}
.btn.ghost:hover { background: var(--ac1); border-color: transparent; }
.vtoolbox { display: flex; align-items: center; gap: 4px; }
.pgind { font-size: 12.5px; color: var(--muted); min-width: 64px; text-align: center; font-variant-numeric: tabular-nums; }
.sep { width: 1px; height: 20px; background: var(--border); margin: 0 4px; }
.zoomval { font-size: 12px; color: var(--muted); min-width: 40px; text-align: center; }
.srch { display: flex; align-items: center; gap: 6px; background: var(--card); border: 1px solid var(--border); border-radius: 999px; padding: 6px 12px; }
.srch .ic { width: 15px; height: 15px; fill: var(--muted); }
.srch input { background: none; border: none; outline: none; color: var(--ink); font-size: 12.5px; width: 150px; }
.srch input::placeholder { color: var(--muted); }
#vSearchStat { font-size: 11px; color: var(--ac3); min-width: 30px; text-align: center; font-variant-numeric: tabular-nums; }

.vbody { flex: 1; display: flex; min-height: 0; }
.vrail {
  width: 74px; border-right: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 8px; padding: 10px 8px;
  overflow-y: auto;
}
.vrail .tthumb {
  width: 58px; height: 76px; border-radius: 7px; overflow: hidden;
  background: var(--card); border: 1.5px solid var(--border);
  cursor: pointer; position: relative; flex: none; padding: 0;
}
.vrail .tthumb img { width: 100%; height: 100%; object-fit: contain; }
.vrail .tthumb:hover { border-color: var(--muted); }
.vrail .tthumb.sel { border-color: var(--ac1); box-shadow: 0 0 0 2px rgba(255,138,31,.4); }
.vrail .tnum { position: absolute; right: 3px; bottom: 2px; font-size: 9px; color: #fff; background: rgba(0,0,0,.6); border-radius: 4px; padding: 0 3px; }

.vcenter { flex: 1; display: flex; min-width: 0; overflow: hidden; position: relative; }
.vpdf {
  flex: 1; overflow: auto; display: flex; flex-direction: column; align-items: center;
  gap: 14px; padding: 18px; background:
    repeating-linear-gradient(45deg, rgba(255,255,255,.015), rgba(255,255,255,.015) 12px, transparent 12px, transparent 24px);
}
.pwrap { position: relative; margin: 0 auto; }
.pwrap canvas { display: block; background: #fff; box-shadow: 0 4px 24px rgba(0,0,0,.55); border-radius: 3px; }
.matchhl { position: absolute; background: rgba(255, 200, 0, .55); mix-blend-mode: multiply; border-radius: 2px; pointer-events: none; }

.voffice { width: 100%; height: 100%; border: none; background: #fff; }
.vnote {
  margin: auto; text-align: center; color: var(--muted);
  max-width: 520px; padding: 30px;
}
.vnote h3 { color: var(--ink); margin-bottom: 10px; }
.vnote p { font-size: 13.5px; line-height: 1.6; margin-bottom: 14px; }
.vnote .btn { margin: 0 6px; }

.vside { width: 168px; border-left: 1px solid var(--border); display: flex; flex-direction: column; min-height: 0; }
.vsideHead { padding: 10px 12px; font-size: 11px; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--border); }
.vthumbs { flex: 1; overflow-y: auto; padding: 10px 8px; display: flex; flex-direction: column; gap: 8px; align-items: center; }
.vthumbs .tthumb { width: 110px; height: auto; }

/* ---------- selector de vista (PDF / Office) ---------- */
.vbody { position: relative; }
.vbody:fullscreen { background: #0b0603; }
.vbody.fs .vrail, .vbody.fs .vside { display: none; }
.fsbtn {
  position: absolute; top: 14px; right: 22px; z-index: 8;
  background: rgba(23, 11, 5, .95); border: 1px solid var(--border);
  color: var(--ink); font-size: 13px; font-weight: 600;
  padding: 9px 16px; border-radius: 999px; cursor: pointer;
  box-shadow: var(--shadow);
}
.fsbtn:hover { background: var(--ac1); color: #170b05; }
.vmodes { display: flex; align-items: center; gap: 4px; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 3px; }
.vmodes button {
  border: none; background: none; color: var(--muted);
  font-size: 12px; font-weight: 700; padding: 6px 12px; border-radius: 7px; cursor: pointer;
  display: flex; align-items: center; gap: 6px;
}
.vmodes button:hover { color: var(--ink); }
.vmodes button.on { background: linear-gradient(135deg, var(--ac1), var(--ac2)); color: #170b05; }
.vmodes .ic { width: 14px; height: 14px; fill: currentColor; }

/* hint de respaldo del visor de office */
.vhint {
  position: absolute; top: 12px; right: 24px;
  background: rgba(23, 11, 5, .92); border: 1px solid var(--border);
  border-radius: 999px; padding: 8px 14px; font-size: 12px; color: var(--ink);
  display: flex; align-items: center; gap: 10px; z-index: 6;
  box-shadow: var(--shadow); white-space: nowrap;
}
.vhint a { color: var(--ac3); font-weight: 700; text-decoration: none; }
.vhint a:hover { text-decoration: underline; }

/* ---------- toast ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: rgba(20, 26, 48, .95); border: 1px solid var(--border);
  color: var(--ink); font-size: 13px; padding: 11px 18px; border-radius: 12px;
  box-shadow: var(--shadow); z-index: 99;
}

/* loading shimmer */
.spin {
  width: 34px; height: 34px; border-radius: 50%;
  border: 3px solid rgba(255,255,255,.15); border-top-color: var(--ac1);
  animation: rot 1s linear infinite;
}
@keyframes rot { to { transform: rotate(360deg); } }

@media (min-width: 1440px) {
  .grid { grid-template-columns: repeat(auto-fill, minmax(285px, 1fr)); gap: 24px; }
  .thumb { height: 185px; }
  main { padding: 26px 48px 90px; }
  .filters { padding: 24px 48px 8px; }
  .topbar { padding: 20px 48px; }
}

@media (max-width: 720px) {
  .vrail { display: none; }
  .vside { display: none; }
  .vtitle { max-width: 45vw; }
  .topbar { padding: 12px 14px; }
  main { padding: 14px; }
  .filters { padding: 14px 14px 4px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}