:root{
  --bg0:#060b17;
  --bg1:#071125;

  --txt:#e8f2ff;
  --muted: rgba(232,242,255,.68);

  --ok:#39d98a;
  --warn:#ffcc66;
  --bad:#ff5a7a;

  --accent:#76c8ff;
  --accent2:#5a78ff;

  --accentGlow: rgba(118,200,255,.28);
  --accentGlow2: rgba(90,120,255,.20);

  --accentLine: rgba(140,190,255,.18);
  --accentLineSoft: rgba(140,190,255,.10);

  --glassA: rgba(16,28,62,.62);
  --glassB: rgba(10,18,44,.42);
  --cardA: rgba(18,30,64,.70);
  --cardB: rgba(10,18,44,.46);

  --shadow: 0 22px 65px rgba(0,0,0,.60);
  --shadow2: 0 12px 28px rgba(0,0,0,.45);

  --rGlass: 20px;
  --rCard: 16px;
}

/* themes */
html[data-accent="blue"]{
  --accent:#76c8ff; --accent2:#5a78ff;
  --accentGlow: rgba(118,200,255,.28);
  --accentGlow2: rgba(90,120,255,.20);
  --accentLine: rgba(140,190,255,.18);
  --accentLineSoft: rgba(140,190,255,.10);
}
html[data-accent="green"]{
  --accent:#39d98a; --accent2:#00d1a0;
  --accentGlow: rgba(57,217,138,.26);
  --accentGlow2: rgba(0,209,160,.18);
  --accentLine: rgba(120,255,190,.16);
  --accentLineSoft: rgba(120,255,190,.09);
}
html[data-accent="red"]{
  --accent:#ff4d6d; --accent2:#ff2e55;
  --accentGlow: rgba(255,77,109,.24);
  --accentGlow2: rgba(255,46,85,.16);
  --accentLine: rgba(255,140,170,.16);
  --accentLineSoft: rgba(255,140,170,.09);
}
html[data-accent="orange"]{
  --accent:#ff9a3d; --accent2:#ff6a3d;
  --accentGlow: rgba(255,154,61,.22);
  --accentGlow2: rgba(255,106,61,.16);
  --accentLine: rgba(255,200,140,.16);
  --accentLineSoft: rgba(255,200,140,.09);
}
html[data-accent="yellow"]{
  --accent:#ffd166; --accent2:#ffb703;
  --accentGlow: rgba(255,209,102,.22);
  --accentGlow2: rgba(255,183,3,.14);
  --accentLine: rgba(255,230,160,.16);
  --accentLineSoft: rgba(255,230,160,.09);
}
html[data-accent="pink"]{
  --accent:#ff4fd8; --accent2:#b64cff;
  --accentGlow: rgba(255,79,216,.22);
  --accentGlow2: rgba(182,76,255,.16);
  --accentLine: rgba(255,170,240,.16);
  --accentLineSoft: rgba(255,170,240,.09);
}
html[data-accent="white"]{
  --accent: #ffffff;
  --accent2: #e9f0ff;
  --accentGlow: rgba(255,255,255,.45);
  --accentGlow2: rgba(220,235,255,.30);
  --accentLine: rgba(255,255,255,.38);
  --accentLineSoft: rgba(255,255,255,.20);
}
html[data-accent="black"]{
  --accent: #05070c;
  --accent2: #0b0f1a;
  --accentGlow: rgba(10,14,28,.55);
  --accentGlow2: rgba(5,7,12,.85);
  --accentLine: rgba(20,24,40,.55);
  --accentLineSoft: rgba(20,24,40,.30);
}

*{ box-sizing:border-box; }
html,body{ height:100%; }

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Helvetica Neue", sans-serif;
  color: var(--txt);

  background:
    radial-gradient(1400px 900px at 50% -10%, color-mix(in srgb, var(--accent2) 22%, transparent), transparent 62%),
    radial-gradient(1000px 800px at 12% 25%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 60%),
    radial-gradient(900px 700px at 92% 30%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 62%),
    linear-gradient(180deg, var(--bg0), var(--bg1) 45%, var(--bg0));
  overflow-x:hidden;
}

/* background effects */
.bg{ position:fixed; inset:0; pointer-events:none; z-index:-1; }
.bg-grid{
  position:absolute; inset:0;
  background:
    linear-gradient(to right, color-mix(in srgb, var(--accentLineSoft) 55%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--accentLineSoft) 55%, transparent) 1px, transparent 1px);
  background-size: 84px 84px;
  opacity:.18;
  filter: blur(.15px);
}
.bg-glow{
  position:absolute; width:680px; height:680px; border-radius:50%;
  filter: blur(52px);
  opacity:.65;
}
.bg-glow-1{ left:-220px; top:190px; background: var(--accentGlow2); }
.bg-glow-2{ right:-240px; top:40px; background: var(--accentGlow); }
.bg-vignette{
  position:absolute; inset:-1px;
  background:
    radial-gradient(1200px 900px at 50% 55%, transparent 40%, rgba(0,0,0,.45) 100%),
    linear-gradient(180deg, rgba(0,0,0,.10), rgba(0,0,0,.25));
  opacity:.85;
}

.muted{ color: var(--muted); }

.glass{
  position:relative;
  background: linear-gradient(180deg, var(--glassA), var(--glassB));
  border: 1px solid var(--accentLine);
  border-radius: var(--rGlass);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  overflow:hidden;
}
.card{
  position:relative;
  background: linear-gradient(180deg, var(--cardA), var(--cardB));
  border: 1px solid var(--accentLine);
  border-radius: var(--rCard);
  box-shadow: var(--shadow2);
  overflow:hidden;
}
.glass::before,
.card::before{
  content:"";
  position:absolute; inset:0;
  border-radius: inherit;
  pointer-events:none;
  background: radial-gradient(650px 220px at 30% 0%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 60%);
  opacity:.95;
}
.card-pad{ padding: 18px; }

/* TOPBAR */
.topbar{
  width:min(1680px, 98.5vw);
  margin: 14px auto 10px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  padding: 8px 4px;
}
.logo{
  height: 60px;
  width: auto;
  display:block;
  filter: drop-shadow(0 0 14px color-mix(in srgb, var(--accent) 12%, transparent));
  opacity:.95;
}

/* Accent picker */
.accent-picker{
  padding: 10px 12px;
  border-radius: 18px;
  display:flex;
  align-items:center;
  gap: 12px;
}
.accent-title{
  display:flex;
  align-items:center;
  gap: 8px;
  padding-right: 8px;
  border-right: 1px solid var(--accentLineSoft);
}
.accent-title .material-icons-sharp{
  color: color-mix(in srgb, var(--accent) 85%, white 0%);
  filter: drop-shadow(0 0 10px color-mix(in srgb, var(--accent) 20%, transparent));
}

.accent-list{
  display:flex;
  flex-wrap:wrap;
  gap: 10px 12px;
  align-items:center;
}

.accent-dot{
  appearance:none;
  border: 0;
  background: transparent;
  color: var(--txt);
  display:flex;
  align-items:center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 999px;
  cursor:pointer;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
}
.accent-dot .dot{
  width: 12px; height: 12px;
  border-radius: 999px;
  background: var(--dot);
  box-shadow: 0 0 16px color-mix(in srgb, var(--dot) 35%, transparent);
  border: 1px solid rgba(255,255,255,.14);
}
.accent-dot .label{
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .02em;
  color: rgba(232,242,255,.86);
}

.accent-dot:hover{
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  transform: translateY(-1px) scale(1.03);
}

.accent-dot.is-active{
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent);
}
.accent-dot.is-active .label{
  color: rgba(232,242,255,.98);
}

/* layout */
.shell{
  width: min(1680px, 98.5vw);
  margin: 0 auto 42px;
  display:grid;
  grid-template-columns: 270px 1fr 340px;
  gap: 18px;
  align-items:start;
}

/* sidebar */
.sidebar{
  padding: 14px;
  min-height: 660px;
  display:grid;
  grid-template-columns: 54px 1fr;
  gap: 14px;
}
.material-icons-sharp{ font-size: 20px; line-height: 1; }

.side-rail{
  padding: 10px 8px;
  border-radius: 16px;
  background: rgba(0,0,0,.18);
  border: 1px solid var(--accentLineSoft);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap: 12px;
}
.side-rail .ico{
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display:flex;
  align-items:center;
  justify-content:center;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 16%, transparent);
  color: rgba(232,242,255,.78);
  box-shadow: 0 10px 22px rgba(0,0,0,.28);
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease, border-color .16s ease, color .16s ease;
}

/* NEW: hover glow + slight scale */
.side-rail .ico:hover{
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border-color: color-mix(in srgb, var(--accent) 34%, transparent);
  color: rgba(232,242,255,.98);
  transform: translateY(-1px) scale(1.10);
  box-shadow:
    0 12px 26px rgba(0,0,0,.32),
    0 0 26px color-mix(in srgb, var(--accent) 18%, transparent);
}

.side-rail .ico.active{
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  border-color: color-mix(in srgb, var(--accent) 30%, transparent);
  color: rgba(232,242,255,.98);
  box-shadow: 0 0 26px color-mix(in srgb, var(--accent) 22%, transparent);
}

.side-main{
  display:flex;
  flex-direction:column;
  gap: 14px;
  min-width: 0;
}

.profile{
  padding: 14px;
  display:flex;
  gap: 12px;
  align-items:center;
}
.avatar{
  width:64px;
  height:64px;
  border-radius: 18px;
  background:
    radial-gradient(circle at 35% 25%, color-mix(in srgb, var(--accent) 40%, transparent), transparent 62%),
    linear-gradient(135deg, color-mix(in srgb, var(--accent2) 25%, transparent), color-mix(in srgb, var(--accent) 10%, transparent));
  border: 1px solid var(--accentLine);
}
.profile-meta .name{ font-weight:1100; letter-spacing:.02em; }
.profile-meta .role{ font-size: 12px; color: var(--muted); margin-top:2px; }

.pill{
  display:inline-flex; align-items:center; gap:8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  font-weight:900;
  font-size: 12px;
}

.insights{ padding: 14px; }
.insights-title{ display:flex; align-items:center; justify-content:flex-start; margin-bottom: 8px; }
.insights-ico{
  color: color-mix(in srgb, var(--accent) 90%, white 0%);
  margin-right: 8px;
  filter: drop-shadow(0 0 10px color-mix(in srgb, var(--accent) 20%, transparent));
}
.insights p{ margin: 10px 0 0; line-height:1.45; font-size: 13px; }

.insights-mini{
  margin-top: 12px;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.mini-kpi{
  padding: 10px;
  border-radius: 14px;
  background: rgba(0,0,0,.18);
  border: 1px solid var(--accentLineSoft);
}
.mini-kpi-label{ font-size: 11px; color: var(--muted); }
.mini-kpi-val{ margin-top: 6px; font-weight: 1100; }
.mini-kpi-val.warn{ color: var(--warn); }

.sidebar-footer{
  margin-top:auto;
  font-size: 12px;
  opacity: .85;
}

/* center */
.center-head{ padding: 4px 6px 10px; }
.crumb{ font-size: 12px; letter-spacing:.04em; }
.center-title{ font-size: 24px; font-weight: 1100; margin-top: 6px; }
.panel{ padding: 16px; }

.center-grid{
  display:grid;
  grid-template-columns: 1.35fr .65fr;
  grid-template-rows: auto auto;
  gap: 16px;
}
.stack{
  display:grid;
  grid-template-rows: auto auto;
  gap: 16px;
}

.card-title-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-bottom: 10px;
}
.card-title{ font-weight: 1100; letter-spacing: .02em; }
.chip{
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  color: rgba(232,242,255,.88);
}
.up{ color: var(--ok); font-weight: 900; opacity:.95; }

/* chart */
.chart-area{
  position:relative;
  height: 250px;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(0,0,0,.25), rgba(0,0,0,.10));
  border: 1px solid var(--accentLineSoft);
  overflow:hidden;
}
.chart-grid{
  position:absolute; inset:0;
  background:
    linear-gradient(to right, color-mix(in srgb, var(--accentLineSoft) 70%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--accentLineSoft) 70%, transparent) 1px, transparent 1px);
  background-size: 70px 46px;
  opacity:.30;
}
.chart-svg{ position:absolute; inset:0; width:100%; height:100%; }
.chart-fade{
  position:absolute; inset:0;
  background: radial-gradient(800px 240px at 70% 40%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 60%);
}

.kpi-row{
  display:grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}
.kpi{
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(0,0,0,.18);
  border: 1px solid var(--accentLineSoft);
}
.kpi-val{ font-size: 18px; font-weight: 1100; }
.kpi-lbl{ font-size: 12px; margin-top: 2px; }

.mini-bars{ display:flex; align-items:flex-end; gap:6px; }
.mini-bars .bar{
  width: 10px;
  height: 10px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
}
.mini-bars .bar:nth-child(3){height:18px}
.mini-bars .bar:nth-child(4){height:22px}
.mini-bars .bar:nth-child(6){height:16px}
.mini-bars .bar:nth-child(8){height:24px}

/* stat cards */
.stat-main{ display:flex; align-items:baseline; gap: 10px; margin-top: 6px; }
.stat-val{ font-size: 34px; font-weight: 1200; letter-spacing: .02em; }
.stat-unit{ font-weight: 900; color: rgba(232,242,255,.88); }
.stat-sub{ margin-top: 6px; font-size: 13px; display:flex; align-items:center; gap:10px; }
.pos{ color: var(--ok); font-weight: 1100; }

/* table */
.table{ grid-column: 1 / span 2; }
.table-wrap{
  overflow:hidden;
  border-radius: 14px;
  border: 1px solid var(--accentLineSoft);
  background: rgba(0,0,0,.18);
}
table{ width:100%; border-collapse: collapse; font-size: 13px; }
thead th{
  text-align:left;
  padding: 12px 12px;
  color: rgba(232,242,255,.85);
  font-weight: 1100;
  border-bottom: 1px solid var(--accentLineSoft);
  background: rgba(10,18,44,.35);
}
tbody td{
  padding: 11px 12px;
  border-bottom: 1px solid color-mix(in srgb, var(--accentLineSoft) 70%, transparent);
  color: rgba(232,242,255,.88);
}
tbody tr:hover td{ background: color-mix(in srgb, var(--accent) 6%, transparent); }
.table-foot{ margin-top: 10px; font-size: 12px; opacity:.85; }

.tag{
  display:inline-flex;
  align-items:center;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 1100;
  letter-spacing: .04em;
  border: 1px solid rgba(255,255,255,.10);
}
.tag.ok{ color: rgba(30,255,200,.92); background: rgba(57,217,138,.14); border-color: rgba(57,217,138,.22); }
.tag.warn{ color: rgba(255,220,140,.95); background: rgba(255,204,102,.14); border-color: rgba(255,204,102,.22); }
.tag.bad{ color: rgba(255,140,170,.95); background: rgba(255,90,122,.14); border-color: rgba(255,90,122,.30); }

.fulfill{ display:flex; align-items:center; gap: 10px; }
.barline{
  height: 8px;
  border-radius: 999px;
  background: rgba(118,200,255,.18);
  border: 1px solid rgba(118,200,255,.22);
  min-width: 80px;
}
.barline.ok{ background: rgba(57,217,138,.18); border-color: rgba(57,217,138,.28); }
.barline.warn{ background: rgba(255,204,102,.18); border-color: rgba(255,204,102,.28); }
.barline.bad{ background: rgba(255,90,122,.18); border-color: rgba(255,90,122,.30); }

/* right feed */
.right{ padding: 14px; min-height: 660px; }
.right-head{ padding: 6px 6px 10px; }
.right-title{ font-size: 18px; font-weight: 1200; letter-spacing:.02em; }

.feed{ display:flex; flex-direction:column; gap: 12px; }
.feed-card{ padding: 12px; }

.feed-item{
  display:flex;
  gap: 12px;
  padding: 10px 8px;
  border-radius: 12px;
  align-items:flex-start;
}
.feed-item:hover{ background: color-mix(in srgb, var(--accent) 6%, transparent); }

.feed-ico{
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size: 18px;
  background: rgba(0,0,0,.18);
  border: 1px solid var(--accentLineSoft);
  box-shadow: 0 10px 22px rgba(0,0,0,.25);
  flex: 0 0 34px;
  margin-top: 2px;
}
.feed-ico.ok{ color: var(--ok); }
.feed-ico.warn{ color: var(--warn); }
.feed-ico.bad{ color: var(--bad); }

.feed-avatar{
  width: 34px;
  height: 34px;
  border-radius: 999px;
  background:
    radial-gradient(circle at 35% 30%, rgba(232,242,255,.20), transparent 62%),
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 16%, transparent), color-mix(in srgb, var(--accent2) 12%, transparent));
  border: 1px solid var(--accentLineSoft);
  box-shadow: 0 10px 22px rgba(0,0,0,.25);
  flex: 0 0 34px;
  margin-top: 2px;
}

.feed-line{ font-weight: 1100; font-size: 13px; }
.feed-meta{ font-size: 12px; margin-top: 2px; }

.right-footer{
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--accentLineSoft);
}
.mini-stats{
  display:flex;
  justify-content:space-between;
  gap: 10px;
}
.mini-stat{
  flex:1;
  padding: 10px;
  border-radius: 14px;
  background: rgba(0,0,0,.18);
  border: 1px solid var(--accentLineSoft);
  display:flex;
  align-items:baseline;
  justify-content:center;
  gap: 8px;
}
.mini-stat .num{ font-weight: 1200; font-size: 16px; }

/* responsive */
@media (max-width: 1100px){
  .shell{ grid-template-columns: 240px 1fr; width: 98vw; }
  .right{ grid-column: 1 / -1; }
  .center-grid{ grid-template-columns: 1fr; }
  .table{ grid-column: 1; }
  .topbar{ width: 98vw; }
}
@media (max-width: 780px){
  .shell{ grid-template-columns: 1fr; width: 98vw; }
  .sidebar{ min-height:auto; }
  .accent-title{ display:none; }
}
/* Dropdown container */
.accent-dd{
  padding: 6px;
  border-radius: 18px;
  position: relative;
}

/* Closed button */
.accent-dd__btn{
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--txt);
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  cursor:pointer;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
}

.accent-dd__btn:hover{
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  box-shadow: 0 10px 26px rgba(0,0,0,.30);
}

.accent-dd__text{
  font-weight: 1000;
  letter-spacing: .02em;
  color: rgba(232,242,255,.90);
}

.accent-dd__current{
  font-weight: 900;
  font-size: 12px;
  color: rgba(232,242,255,.72);
  margin-left: 2px;
}

.accent-dd__dot{
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 18px color-mix(in srgb, var(--accent) 35%, transparent);
  border: 1px solid rgba(255,255,255,.14);
  margin-left: auto;
}

.caret{
  opacity:.85;
  transition: transform .18s ease;
}

/* Menu panel *//* Menu panel (SOLID, no translucent) */
.accent-dd__menu{
  position:absolute;
  right: 6px;
  top: calc(100% + 10px);
  min-width: 240px;
  padding: 10px;
  border-radius: 18px;

  /* 👇 sólido */
  background: linear-gradient(180deg, #0b1428 0%, #070e1f 100%);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;

  border: 1px solid color-mix(in srgb, var(--accent) 30%, #0a1430);
  box-shadow:
    0 30px 80px rgba(0,0,0,.85),
    0 0 40px color-mix(in srgb, var(--accent) 18%, transparent);

  display:none;
  z-index: 2000; /* 👈 para que siempre quede encima */
}
.accent-dd.glass{ overflow: visible; z-index: 1000; }
.accent-dd.open .accent-dd__menu{
  display:block;
  animation: ddIn .14s ease-out;
}

.accent-dd.open .caret{
  transform: rotate(180deg);
}

/* Items inside menu */
.accent-item{
  width: 100%;
  border: 1px solid transparent;
  background: rgba(0,0,0,.12);
  color: var(--txt);
  display:flex;
  align-items:center;
  justify-content:flex-start;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 14px;
  cursor:pointer;
  margin-bottom: 8px;
  transition: transform .14s ease, background .14s ease, border-color .14s ease, box-shadow .14s ease;
}

.accent-item:last-child{ margin-bottom: 0; }

.accent-item .dot{
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--dot);
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: 0 0 16px color-mix(in srgb, var(--dot) 35%, transparent);
}

.accent-item .label{
  font-size: 13px;
  font-weight: 1000;
  letter-spacing: .02em;
  color: rgba(232,242,255,.88);
}

.accent-item:hover{
  background: color-mix(in srgb, var(--accent) 10%, rgba(0,0,0,.12));
  border-color: color-mix(in srgb, var(--accent) 26%, transparent);
  transform: translateY(-1px);
  box-shadow: 0 12px 26px rgba(0,0,0,.25);
}

.accent-item.is-active{
  background: color-mix(in srgb, var(--accent) 14%, rgba(0,0,0,.12));
  border-color: color-mix(in srgb, var(--accent) 30%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent);
}

@keyframes ddIn{
  from{ opacity:0; transform: translateY(-6px) scale(.98); }
  to{ opacity:1; transform: translateY(0) scale(1); }
}
/* Back navigation button */
.nav-back{
  width: 36px;
  height: 36px;
  border-radius: 12px;
  border: 1px solid var(--accentLineSoft);
  background: color-mix(in srgb, var(--accent) 10%, rgba(0,0,0,.35));
  color: var(--txt);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition:
    transform .14s ease,
    background .14s ease,
    box-shadow .14s ease,
    border-color .14s ease;
}

.nav-back:hover{
  background: color-mix(in srgb, var(--accent) 18%, rgba(0,0,0,.35));
  border-color: color-mix(in srgb, var(--accent) 32%, transparent);
  transform: translateX(-2px) scale(1.06);
  box-shadow:
    0 10px 26px rgba(0,0,0,.35),
    0 0 18px color-mix(in srgb, var(--accent) 18%, transparent);
}

.nav-back:active{
  transform: translateX(-10px) scale(0.98);
}