/* ============================================================
   os.css — level-2 futuristic OS desktop ("CHRONOS / HEXOS")
   ============================================================ */

#os-screen {
  background:
    radial-gradient(circle at 20% 10%, rgba(56,255,156,0.06), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(79,214,255,0.07), transparent 45%),
    linear-gradient(160deg, #02060a, #030a12 60%, #02050b);
  overflow: hidden;
}

#os-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(56,255,156,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,255,156,0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  animation: gridDrift 40s linear infinite;
}
@keyframes gridDrift { to { background-position: 44px 44px; } }

/* top status bar */
#os-topbar {
  position: absolute; top: 0; left: 0; right: 0;
  height: 38px;
  display: flex; align-items: center;
  padding: 0 16px;
  gap: 18px;
  background: rgba(3,10,14,0.6);
  border-bottom: 1px solid rgba(56,255,156,0.2);
  backdrop-filter: blur(6px);
  font-size: 12px;
  color: var(--green);
  z-index: 100;
}
#os-topbar .brand { font-weight: 800; letter-spacing: 2px; color: var(--green); text-shadow: var(--glow); }
#os-topbar .spacer { flex: 1; }
#os-topbar .stat { color: var(--cyan); letter-spacing: 1px; }
#os-topbar .stat b { color: #eafff5; }

/* dock */
#os-dock {
  position: absolute;
  bottom: 18px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 10px;
  padding: 10px 14px;
  background: rgba(4,12,16,0.7);
  border: 1px solid rgba(56,255,156,0.25);
  border-radius: 14px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 40px rgba(0,0,0,0.6), 0 0 30px rgba(56,255,156,0.08);
  z-index: 200;
}
.dock-app {
  width: 54px; height: 54px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 2px;
  border: 1px solid transparent;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.18s, background 0.18s, border-color 0.18s;
  color: var(--txt);
  font-size: 20px;
}
.dock-app span { font-size: 8px; letter-spacing: 0.5px; color: var(--muted); }
.dock-app:hover {
  transform: translateY(-8px) scale(1.08);
  background: rgba(56,255,156,0.12);
  border-color: rgba(56,255,156,0.4);
}
.dock-app:hover span { color: var(--green); }

/* windows */
.os-window {
  position: absolute;
  min-width: 280px;
  min-height: 160px;
  background: rgba(5,13,17,0.92);
  border: 1px solid rgba(56,255,156,0.3);
  box-shadow: 0 10px 60px rgba(0,0,0,0.7), 0 0 30px rgba(56,255,156,0.06);
  display: flex;
  flex-direction: column;
  z-index: 10;
  backdrop-filter: blur(3px);
}
.os-window.active { border-color: rgba(56,255,156,0.6); box-shadow: 0 10px 60px rgba(0,0,0,0.8), 0 0 40px rgba(56,255,156,0.16); }
.osw-title {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  background: linear-gradient(90deg, rgba(56,255,156,0.14), rgba(79,214,255,0.06));
  border-bottom: 1px solid rgba(56,255,156,0.2);
  cursor: move;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--green);
  user-select: none;
}
.osw-title .ico { font-size: 14px; }
.osw-title .ttl { flex: 1; font-weight: 600; }
.osw-btns { display: flex; gap: 6px; }
.osw-btns button {
  width: 14px; height: 14px; border-radius: 50%;
  border: none; cursor: pointer;
}
.osw-min { background: var(--amber); }
.osw-max { background: var(--green); }
.osw-close { background: var(--red); }
.osw-body {
  flex: 1;
  overflow: auto;
  padding: 14px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--txt);
}
.osw-body h1, .osw-body h2, .osw-body h3 { color: var(--cyan); margin: 10px 0 6px; }
.osw-body p { margin-bottom: 8px; color: #b9e6d4; }
.osw-body code { color: var(--amber); background: rgba(255,179,71,0.08); padding: 1px 4px; }
.osw-body a { color: var(--cyan); }
.osw-resize {
  position: absolute; right: 0; bottom: 0;
  width: 16px; height: 16px;
  cursor: nwse-resize;
  background: linear-gradient(135deg, transparent 50%, rgba(56,255,156,0.5) 50%);
}

/* quantum-pipe app */
.qpipe-canvas { width: 100%; height: 100%; display: block; }
.qpipe-controls { padding: 10px; display: flex; flex-wrap: wrap; gap: 8px; border-top: 1px solid rgba(56,255,156,0.2); }
.qpipe-controls button, .os-btn {
  background: rgba(56,255,156,0.08);
  border: 1px solid rgba(56,255,156,0.35);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 10px;
  cursor: pointer;
  letter-spacing: 0.5px;
}
.qpipe-controls button:hover, .os-btn:hover { background: rgba(56,255,156,0.2); }

/* midnight-commander style two-pane */
.mc { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; height: 100%; font-size: 12px; }
.mc-pane { border: 1px solid rgba(56,255,156,0.3); display: flex; flex-direction: column; }
.mc-pane.active { border-color: var(--green); box-shadow: inset 0 0 16px rgba(56,255,156,0.08); }
.mc-head { background: rgba(56,255,156,0.16); color: var(--green); padding: 3px 8px; font-weight: 600; }
.mc-list { flex: 1; overflow: auto; }
.mc-row { padding: 1px 8px; cursor: pointer; display: flex; justify-content: space-between; }
.mc-row.sel { background: rgba(79,214,255,0.25); color: #fff; }
.mc-row .nm { color: var(--txt); }
.mc-row .nm.dir { color: var(--cyan); }
.mc-bar { background: rgba(0,0,0,0.4); color: var(--muted); padding: 4px 8px; font-size: 11px; display: flex; gap: 14px; }
.mc-bar b { color: var(--amber); }

/* chrono / timeline app */
.chrono-track { position: relative; height: 60px; margin: 18px 0; border-top: 1px solid rgba(56,255,156,0.3); }
.chrono-node {
  position: absolute; top: -6px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--green); box-shadow: 0 0 10px var(--green);
  cursor: pointer; transform: translateX(-50%);
}
.chrono-node:hover { background: var(--cyan); }
.chrono-node .lbl { position: absolute; top: 16px; left: 50%; transform: translateX(-50%); font-size: 10px; color: var(--muted); white-space: nowrap; }

/* boot-into-os splash */
#os-splash {
  position: absolute; inset: 0; z-index: 999;
  background: #02060a;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 20px;
  color: var(--green);
}
#os-splash .logo { font-size: 42px; font-weight: 800; letter-spacing: 8px; text-shadow: var(--glow); }
#os-splash .sub { color: var(--cyan); letter-spacing: 3px; font-size: 13px; }
#os-splash .bar { width: 300px; height: 4px; background: rgba(56,255,156,0.15); }
#os-splash .bar > i { display: block; height: 100%; width: 0; background: var(--green); box-shadow: var(--glow); }

.glitch-text { position: relative; }