:root {
  --bg1: #050814;
  --bg2: #0d1c3e;
  --bg3: #2f0d58;
  --glass: rgba(18, 23, 53, 0.5);
  --border: rgba(255, 255, 255, 0.2);
  --txt: #e9efff;
  --accent: #7c5cff;
  --accent2: #00d4ff;
  --danger: #ff4d7d;
  --ok: #35e88d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, 'Segoe UI', system-ui, sans-serif;
  color: var(--txt);
  background:
    radial-gradient(42vw 42vw at 6% 8%, rgba(72, 98, 255, 0.35), transparent),
    radial-gradient(42vw 42vw at 90% 92%, rgba(255, 59, 228, 0.25), transparent),
    linear-gradient(140deg, var(--bg1), var(--bg2), var(--bg3));
  overflow: hidden;
}

.hidden { display: none !important; }

.boot-screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  background: #19161d;
  z-index: 9999;
}

.boot-screen h1 {
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 4.8rem);
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  color: transparent;
}

.loader {
  margin: 1rem auto 0;
  width: 190px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.loader::after {
  content: '';
  display: block;
  width: 40%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  animation: load 1.1s infinite ease-in-out;
}

@keyframes load {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(330%); }
}

.glass {
  background: var(--glass);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
}

.os {
  display: grid;
  grid-template-columns: 290px 1fr;
  gap: 10px;
  min-height: 100vh;
  padding: 10px;
}

.launcher {
  border-radius: 18px;
  padding: 1rem;
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 0.6rem;
  overflow: hidden;
}

.launcher-title { font-size: 1.2rem; font-weight: 700; }
.launcher-sub { font-size: 0.85rem; opacity: 0.85; }

.app-grid {
  overflow: auto;
  display: grid;
  align-content: start;
  gap: 0.55rem;
  padding-right: 4px;
}

.launcher-btn {
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08);
  color: var(--txt);
  border-radius: 14px;
  padding: 0.66rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  transition: 0.2s ease;
}

.launcher-btn:hover {
  transform: translateX(5px);
  background: rgba(255,255,255,0.16);
}

.workspace-wrap {
  display: grid;
  grid-template-rows: 56px 1fr 72px;
  gap: 8px;
}

.topbar, .taskbar {
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
}

.topbar-left { display: flex; gap: 0.9rem; }

.desktop {
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.16);
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
}

.window-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  flex: 1;
}

.window-tab {
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.09);
  color: var(--txt);
  border-radius: 10px;
  min-width: 140px;
  max-width: 230px;
  padding: 0.35rem 0.6rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: grab;
}

.window-tab.active { outline: 2px solid var(--accent); }

.window {
  position: absolute;
  width: min(820px, 88vw);
  height: min(540px, 76vh);
  left: 9%;
  top: 9%;
  border-radius: 15px;
  border: 1px solid var(--border);
  background: rgba(6, 12, 32, 0.94);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: pop .2s ease;
}

@keyframes pop {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.window.maximized {
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  border-radius: 0;
}

.window-header {
  background: rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.46rem 0.62rem;
  cursor: move;
}

.window-controls button {
  border: none;
  border-radius: 8px;
  width: 30px;
  height: 28px;
  margin-left: 0.26rem;
  color: white;
  background: rgba(255,255,255,0.16);
  cursor: pointer;
}

.window-controls .close:hover { background: var(--danger); }
.window-controls .maximize:hover { background: var(--accent); }
.window-controls .minimize:hover { background: var(--ok); }

.window-content {
  flex: 1;
  overflow: auto;
  padding: 1rem;
}

.resize-handle {
  position: absolute;
  right: 2px;
  bottom: 2px;
  width: 14px;
  height: 14px;
  border-right: 2px solid rgba(255,255,255,.6);
  border-bottom: 2px solid rgba(255,255,255,.6);
  cursor: nwse-resize;
}

input, textarea, select, button { font: inherit; }

input, textarea, select {
  width: 100%;
  margin: .35rem 0 .6rem;
  padding: .55rem .65rem;
  border-radius: 10px;
  color: white;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(0,0,0,.24);
}

.action {
  border: none;
  border-radius: 10px;
  padding: .5rem .8rem;
  color: white;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  cursor: pointer;
}

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: .8rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: .8rem; }
.panel {
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 14px;
  background: rgba(255,255,255,.06);
  padding: .8rem;
}

.terminal {
  background: #01030a;
  border-radius: 12px;
  height: 300px;
  overflow: auto;
  padding: .7rem;
  font-family: ui-monospace, Menlo, Consolas, monospace;
}

.todo-item {
  display: flex;
  justify-content: space-between;
  gap: .5rem;
  border-bottom: 1px solid rgba(255,255,255,.12);
  padding: .35rem;
}

.wb-toolbar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px,1fr));
  gap: .5rem;
  margin-bottom: .6rem;
}

.wb-palette { display: flex; gap: .35rem; flex-wrap: wrap; }
.color-dot {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  border: 2px solid rgba(255,255,255,0.5);
  cursor: pointer;
}

#whiteboardCanvas {
  width: 100%;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 12px;
  background: white;
  touch-action: none;
}

.playlist li { margin-bottom: .35rem; }

audio { width: 100%; margin-top: .6rem; }



.mini-browser {
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 14px;
  padding: .7rem;
  background: rgba(6,10,20,.5);
}

.mini-browser-toolbar {
  display: grid;
  grid-template-columns: auto auto auto 1fr auto;
  gap: .45rem;
  align-items: center;
}

.mini-browser-toolbar input {
  margin: 0;
}

.mini-browser-toolbar .action {
  min-width: 44px;
}

.mini-browser-status {
  margin: .55rem 0;
  color: #b8cae4;
  font-size: .9rem;
}

#miniFrame {
  width: 100%;
  min-height: 420px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 12px;
  background: rgba(0,0,0,.45);
}

@media (max-width: 960px) {
  .os { grid-template-columns: 1fr; }
  .launcher { max-height: 34vh; }
}
/* Boot Screen Logo */
.boot-logo {
    width: 120px;
    height: 120px;
    object-fit: contain;
    margin-bottom: 20px;
    animation: logoFade 1.2s ease-in-out forwards;
    opacity: 0.9;
}

@keyframes logoFade {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}