/* ==========================================================================
   DefenderGuard AI — App Shell Layout
   ========================================================================== */
.app-shell{
  display:grid; grid-template-columns:260px 1fr; min-height:100vh; position:relative; z-index:1;
}

/* ---------------- Sidebar ---------------- */
.sidebar{
  padding:22px 16px; display:flex; flex-direction:column; gap:22px;
  border-right:1px solid var(--dg-border);
  background:linear-gradient(180deg, rgba(11,25,48,0.75), rgba(8,19,38,0.55));
  backdrop-filter:blur(18px);
  position:sticky; top:0; height:100vh;
}
.nav{display:flex; flex-direction:column; gap:4px; flex:1;}
.nav a{
  display:flex; align-items:center; gap:10px; padding:10px 12px; border-radius:9px;
  color:var(--dg-text-dim); font-weight:600; font-size:13.5px; letter-spacing:.02em;
  border:1px solid transparent; transition:.15s;
}
.nav a .ic{width:18px; text-align:center; opacity:.85;}
.nav a:hover{background:rgba(79,216,255,0.08); color:var(--dg-text);}
.nav a.active{
  background:rgba(79,216,255,0.14); color:var(--dg-cyan-2);
  border-color:var(--dg-border-bright); box-shadow:0 0 14px rgba(79,216,255,0.2);
}
.platform-card{
  padding:14px; border-radius:12px; display:flex; flex-direction:column; gap:4px;
  background:rgba(79,216,255,0.06); border:1px solid var(--dg-border); font-size:12.5px;
}
.platform-card b{font-size:12px; letter-spacing:.05em; text-transform:uppercase; color:var(--dg-text-dim);}

/* ---------------- Main / topbar ---------------- */
.main{display:flex; flex-direction:column; min-width:0;}
.topbar{
  display:flex; align-items:center; gap:20px; padding:18px 28px;
  border-bottom:1px solid var(--dg-border);
  background:rgba(6,14,28,0.35); backdrop-filter:blur(10px);
  position:sticky; top:0; z-index:5;
}
.topbar h2{font-size:18px; color:var(--dg-text);}
.topbar > div:first-child{flex:0 0 auto;}
.top-kpis{display:flex; gap:10px; flex:1; flex-wrap:wrap;}
.kpi-chip{
  display:flex; flex-direction:column; padding:6px 14px; border-radius:9px;
  border:1px solid var(--dg-border); background:rgba(79,216,255,0.05); min-width:86px;
}
.kpi-chip b{font-family:var(--dg-font-display); font-size:17px; color:var(--dg-cyan-2);}
.kpi-chip small{font-size:10px; text-transform:uppercase; letter-spacing:.06em;}
.top-actions{display:flex; align-items:center; gap:10px;}
.clock{font-family:var(--dg-font-mono); color:var(--dg-cyan); font-size:13px; min-width:78px; text-align:right;}

.page-root{padding:26px 28px 60px; flex:1;}
.page-header{display:flex; align-items:center; justify-content:space-between; margin-bottom:18px; gap:14px; flex-wrap:wrap;}
.page-header h3{font-size:15px; text-transform:uppercase; letter-spacing:.06em; color:var(--dg-text-dim);}

/* ---------------- Grids / cards ---------------- */
.cards-grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(230px,1fr)); gap:16px; margin-bottom:22px;}
.stat-card{padding:18px 20px; display:flex; flex-direction:column; gap:6px;}
.stat-card .label{font-size:11px; text-transform:uppercase; letter-spacing:.07em; color:var(--dg-text-dim);}
.stat-card .value{font-family:var(--dg-font-display); font-size:30px; color:var(--dg-cyan-2); text-shadow:0 0 18px rgba(79,216,255,0.4);}
.stat-card .sub{font-size:12px; color:var(--dg-text-faint);}

.panel{padding:20px 22px; margin-bottom:20px;}
.panel-head{display:flex; align-items:center; justify-content:space-between; margin-bottom:14px;}
.panel-head h4{font-size:13px; text-transform:uppercase; letter-spacing:.06em; color:var(--dg-text-dim);}

.two-col{display:grid; grid-template-columns:1.4fr 1fr; gap:18px;}
.empty-state{padding:34px 20px; text-align:center; color:var(--dg-text-faint); font-size:13px;}

.badge-os{display:inline-flex; align-items:center; gap:6px; font-size:12px; color:var(--dg-text-dim);}

.toast{
  position:fixed; bottom:24px; right:24px; z-index:50;
  padding:12px 18px; border-radius:10px; font-size:13px; font-weight:600;
  background:rgba(13,27,51,0.9); border:1px solid var(--dg-border-bright);
  box-shadow:var(--dg-glow); animation:dg-toast-in .25s ease;
}
@keyframes dg-toast-in{from{opacity:0; transform:translateY(8px);} to{opacity:1; transform:translateY(0);}}

.modal-backdrop{
  position:fixed; inset:0; background:rgba(2,6,14,0.65); backdrop-filter:blur(4px);
  display:flex; align-items:center; justify-content:center; z-index:40; padding:20px;
}
.modal{width:min(480px, 100%); padding:24px; display:flex; flex-direction:column; gap:14px;}

@media (max-width:900px){
  .app-shell{grid-template-columns:1fr;}
  .sidebar{position:relative; height:auto;}
  .two-col{grid-template-columns:1fr;}
  .top-kpis{display:none;}
}

.gauges-row{display:grid; grid-template-columns:repeat(auto-fit, minmax(150px,1fr)); gap:16px;}
.gauge-card{display:flex; flex-direction:column; align-items:center; gap:12px; padding:22px 10px 18px;}
.gauge{position:relative; width:118px; height:118px;}
.gauge::before{
  content:""; position:absolute; inset:-6px; border-radius:50%;
  background:radial-gradient(circle, rgba(79,216,255,0.25), transparent 70%);
  animation:dg-gauge-pulse 2.6s ease-in-out infinite; will-change:opacity, transform;
}
@keyframes dg-gauge-pulse{
  0%,100%{opacity:0.35; transform:scale(0.94);}
  50%{opacity:0.85; transform:scale(1.04);}
}
.gauge svg{width:100%; height:100%; transform:rotate(-90deg); overflow:visible; position:relative; z-index:1;}
.gauge-track{fill:none; stroke:rgba(79,216,255,0.12); stroke-width:10;}
.gauge-fill{fill:none; stroke:url(#gaugeGrad); stroke-width:10; stroke-linecap:round; filter:drop-shadow(0 0 6px rgba(79,216,255,0.55)); transition:stroke-dashoffset 1.6s cubic-bezier(.2,.8,.2,1);}
.gauge-center{position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;}
.gauge-center b{font-family:var(--dg-font-display); font-size:22px; color:var(--dg-cyan-2); text-shadow:0 0 12px rgba(79,216,255,0.5);}
.gauge-center small{font-size:9.5px; text-transform:uppercase; letter-spacing:.06em;}
.gauge-name{font-size:12px; color:var(--dg-text-dim); text-transform:uppercase; letter-spacing:.05em; text-align:center;}

.bars3d-wrap{display:flex; align-items:flex-end; gap:22px; height:190px; padding:34px 14px 0; position:relative;}
.bars3d-wrap::after{content:""; position:absolute; left:14px; right:14px; bottom:0; height:1px; background:linear-gradient(90deg, transparent, rgba(79,216,255,0.4), transparent);}
.bar3d-col{display:flex; flex-direction:column; align-items:center; gap:10px; flex:1; height:100%; justify-content:flex-end; position:relative;}
.bar3d-value{font-family:var(--dg-font-mono); font-size:12px; color:var(--dg-cyan-2); text-shadow:0 0 8px rgba(79,216,255,0.5); position:absolute; top:-22px;}
.bar3d-front{position:relative; width:30px; height:0; border-radius:4px 4px 0 0; border:1px solid rgba(120,210,255,0.55); border-bottom:none;
  background:linear-gradient(180deg, rgba(190,240,255,0.55) 0%, rgba(79,216,255,0.28) 55%, rgba(63,123,255,0.12) 100%);
  box-shadow:inset 0 0 14px rgba(190,240,255,0.18), 0 0 16px rgba(79,216,255,0.3);
  transition:height 1.3s cubic-bezier(.2,.8,.2,1);}
.bar3d-front::before{content:""; position:absolute; top:-6px; left:-1px; width:28px; height:12px;
  background:linear-gradient(135deg, rgba(210,245,255,0.85), rgba(120,210,255,0.4));
  transform:skewX(-38deg) scaleY(0.55); transform-origin:bottom left;
  border-radius:3px 5px 0 0; border:1px solid rgba(210,245,255,0.6); border-bottom:none;}
.bar3d-front::after{content:""; position:absolute; top:0; right:-8px; width:8px; height:100%;
  background:linear-gradient(180deg, rgba(63,123,255,0.32), rgba(10,22,46,0.12));
  transform:skewY(44deg); transform-origin:top left; border-right:1px solid rgba(120,210,255,0.28);}
.bar3d-label{font-size:11px; color:var(--dg-text-dim); letter-spacing:.02em;}

.live-dot{display:inline-flex; align-items:center; gap:6px; font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:var(--dg-ok);}

/* ---------------- Hexagon status badge ---------------- */
.hex-badge-wrap{display:flex; align-items:center; justify-content:center; padding:20px;}
.hex-badge{position:relative; width:180px; height:200px;}
.hex-badge svg{width:100%; height:100%; filter:drop-shadow(0 0 20px rgba(53,230,160,0.5));}
.hex-badge.crit svg{filter:drop-shadow(0 0 20px rgba(255,84,112,0.5));}
.hex-badge-center{position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;}
.hex-badge-status{font-family:var(--dg-font-display); font-size:20px; font-weight:900; color:var(--dg-ok); text-shadow:0 0 14px rgba(53,230,160,0.8); letter-spacing:.05em;}
.hex-badge.crit .hex-badge-status{color:var(--dg-crit); text-shadow:0 0 14px rgba(255,84,112,0.8);}
.hex-badge-count{font-family:var(--dg-font-display); font-size:30px; color:var(--dg-text); margin-top:4px;}
.hex-badge-label{font-size:10px; color:var(--dg-text-dim); text-transform:uppercase; letter-spacing:.06em;}

/* ---------------- Sparkline mini-chart ---------------- */
.sparkline{width:100%; height:34px; display:block;}
.sparkline path{fill:none; stroke-width:1.5; vector-effect:non-scaling-stroke;}
.stat-card-spark{padding:16px 18px; display:flex; flex-direction:column; gap:4px;}
.stat-card-spark .value{font-family:var(--dg-font-display); font-size:22px;}

/* ---------------- Colorful gauge variants (matches multi-color SOC style) ---------------- */
.gauge-fill.gauge-green{stroke:url(#gaugeGradGreen);}
.gauge-fill.gauge-blue{stroke:url(#gaugeGrad);}
.gauge-fill.gauge-amber{stroke:url(#gaugeGradAmber);}
.gauge-fill.gauge-red{stroke:url(#gaugeGradRed);}

/* ---------------- Hero security posture ring ---------------- */
.hero-wrap{display:grid; grid-template-columns:280px 1fr; gap:28px; align-items:center; margin-bottom:22px;}
.hero-ring{position:relative; width:260px; height:260px; margin:0 auto;}
.hero-ring::before{
  content:""; position:absolute; inset:-14px; border-radius:50%;
  border:1px dashed rgba(79,216,255,0.25);
  animation:dg-hero-orbit 18s linear infinite; will-change:transform;
}
.hero-ring::after{
  content:""; position:absolute; top:-3px; left:50%; width:8px; height:8px; margin-left:-4px;
  border-radius:50%; background:var(--dg-cyan); box-shadow:0 0 12px 3px rgba(79,216,255,0.9);
  animation:dg-hero-orbit 6s linear infinite; will-change:transform;
  transform-origin:4px 133px;
}
@keyframes dg-hero-orbit{ to{ transform:rotate(360deg); } }
.hero-ring svg{width:100%; height:100%; transform:rotate(-90deg); overflow:visible; filter:drop-shadow(0 0 30px rgba(79,216,255,0.35));}
.hero-track{fill:none; stroke:rgba(79,216,255,0.08); stroke-width:14;}
.hero-fill{fill:none; stroke:url(#heroGrad); stroke-width:14; stroke-linecap:round; transition:stroke-dashoffset 2s cubic-bezier(.16,1,.3,1); filter:drop-shadow(0 0 14px rgba(79,216,255,0.85));}
.hero-center{position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;}
.hero-value{font-family:var(--dg-font-display); font-size:58px; font-weight:900; color:var(--dg-cyan-2); text-shadow:0 0 30px rgba(79,216,255,0.8); line-height:1;}
.hero-label{font-size:11px; letter-spacing:.15em; text-transform:uppercase; color:var(--dg-text-dim); margin-top:8px; text-align:center;}
.hero-details{display:flex; flex-direction:column; gap:10px;}
.hero-detail-row{display:flex; justify-content:space-between; align-items:center; padding:11px 18px; border-radius:10px; background:rgba(79,216,255,0.05); border:1px solid var(--dg-border);}
.hero-detail-row span{font-size:12px; color:var(--dg-text-dim); text-transform:uppercase; letter-spacing:.05em;}
.hero-detail-row b{font-family:var(--dg-font-display); font-size:19px; color:var(--dg-cyan-2);}

/* ---------------- Network topology graph ---------------- */
.topo-svg{width:100%; height:280px;}
.topo-line{stroke-width:1.5; fill:none; will-change:opacity; animation:dg-topo-pulse 1.8s ease-in-out infinite;}
.topo-line-online{stroke:rgba(53,230,160,0.55);}
.topo-line-offline{stroke:rgba(147,179,209,0.15); animation:none;}
.topo-line-isolated{stroke:rgba(255,84,112,0.7); animation-duration:.8s;}
@keyframes dg-topo-pulse{0%,100%{opacity:0.4;} 50%{opacity:1;}}
.topo-hub{filter:drop-shadow(0 0 16px rgba(79,216,255,0.9));}
.topo-computer{animation:dg-topo-float 3.6s ease-in-out infinite; will-change:transform; transform-box:fill-box; transform-origin:center;}
@keyframes dg-topo-float{0%,100%{transform:translateY(0);} 50%{transform:translateY(-4px);}}

/* ---------------- Terminal-style live log background (Live Sensor) ---------------- */
.radar-terminal-wrap{position:relative; overflow:hidden; border-radius:10px;}
.radar-terminal-bg{
  position:absolute; inset:0; z-index:0; overflow:hidden; pointer-events:none;
  background:rgba(3,8,16,0.55); mask-image:linear-gradient(180deg, transparent, black 15%, black 85%, transparent);
}
.radar-terminal-track{animation:dg-terminal-scroll 22s linear infinite; will-change:transform;}
.radar-terminal-line{
  font-family:var(--dg-font-mono); font-size:10px; line-height:1.9; color:rgba(79,216,255,0.35);
  white-space:nowrap; padding-left:8px;
}
@keyframes dg-terminal-scroll{from{transform:translateY(0);} to{transform:translateY(-50%);}}

/* ---------------- Live activity ticker ---------------- */
.ticker-wrap{overflow:hidden; white-space:nowrap; border-top:1px solid var(--dg-border); border-bottom:1px solid var(--dg-border); padding:9px 0; margin:16px 0; background:rgba(6,14,28,0.3);}
.ticker-track{display:inline-block; animation:dg-ticker-scroll 28s linear infinite; padding-left:100%;}
.ticker-item{display:inline-block; margin-right:44px; font-size:12.5px; color:var(--dg-text-dim); font-family:var(--dg-font-mono);}
@keyframes dg-ticker-scroll{from{transform:translateX(0);} to{transform:translateX(-100%);}}

/* ---------------- HUD corner-bracket frame decoration ---------------- */
.hud-frame{position:relative;}
.hud-frame::before, .hud-frame::after{
  content:""; position:absolute; width:16px; height:16px; border-color:var(--dg-border-bright); pointer-events:none;
}
.hud-frame::before{top:6px; left:6px; border-top:2px solid; border-left:2px solid;}
.hud-frame::after{top:6px; right:6px; border-top:2px solid; border-right:2px solid;}
.hud-frame .hud-corner-br::before, .hud-frame .hud-corner-br::after{
  content:""; position:absolute; width:16px; height:16px; border-color:var(--dg-border-bright); pointer-events:none;
}
.hud-frame .hud-corner-br{position:absolute; inset:0; pointer-events:none;}
.hud-frame .hud-corner-br::before{bottom:6px; left:6px; border-bottom:2px solid; border-left:2px solid;}
.hud-frame .hud-corner-br::after{bottom:6px; right:6px; border-bottom:2px solid; border-right:2px solid;}

/* ---------------- Pixel-grid activity heatmap (real hourly data) ---------------- */
.pixel-grid{display:grid; grid-template-columns:repeat(12, 1fr); gap:4px; padding:6px 0;}
.pixel-cell{aspect-ratio:1; border-radius:2px; background:rgba(79,216,255,0.08); border:1px solid rgba(79,216,255,0.12); transition:background .3s;}
.pixel-cell.lvl-1{background:rgba(79,216,255,0.25);}
.pixel-cell.lvl-2{background:rgba(79,216,255,0.5);}
.pixel-cell.lvl-3{background:rgba(79,216,255,0.75); box-shadow:0 0 6px rgba(79,216,255,0.5);}
.pixel-cell.lvl-4{background:var(--dg-cyan); box-shadow:0 0 10px rgba(79,216,255,0.8);}

/* ---------------- Vertical activity bar ("battery" style) ---------------- */
.vbar-wrap{display:flex; flex-direction:column-reverse; gap:2px; height:200px; width:36px; margin:0 auto;}
.vbar-seg{flex:1; border-radius:2px; background:rgba(79,216,255,0.08); border:1px solid rgba(79,216,255,0.15);}
.vbar-seg.filled{background:linear-gradient(180deg, var(--dg-cyan-2), var(--dg-blue)); box-shadow:0 0 8px rgba(79,216,255,0.5);}

/* ---------------- Radar readout stats ---------------- */
.radar-stat{display:flex; flex-direction:column; gap:2px; padding:8px 12px; border-radius:8px; background:rgba(79,216,255,0.05); border:1px solid var(--dg-border);}
.radar-stat b{font-family:var(--dg-font-display); font-size:22px; color:var(--dg-cyan-2);}
.radar-stat small{font-size:10px; text-transform:uppercase; letter-spacing:.06em; color:var(--dg-text-dim);}
.radar-searching{font-family:var(--dg-font-mono); font-size:12px; color:var(--dg-cyan); text-transform:uppercase; letter-spacing:.1em;}