:root {
  --bg: #0b1220;
  --bg-accent: #111b2d;
  --surface: rgba(14, 20, 34, 0.66);
  --surface-solid: rgba(14, 20, 34, 0.9);
  --border: rgba(173, 195, 231, 0.25);
  --text: #e8f0ff;
  --muted: #b4c6e8;
  --focus: #7db9ff;
  --taskbar-height: 58px;
  --window-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
}

body {
  font-family: Inter, system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 20%, #293e67 0%, transparent 40%),
    radial-gradient(circle at 80% 10%, #1a6b8a 0%, transparent 32%),
    linear-gradient(140deg, #080d17, #0d1627 45%, #0f2330);
  overflow: hidden;
}

body:not(.nebula-authenticated) .desktop,
body:not(.nebula-authenticated) .taskbar,
body:not(.nebula-authenticated) .launcher {
  visibility: hidden;
  pointer-events: none;
}

.hidden {
  display: none !important;
}

@media (max-width: 820px) {
  body:not(.nebula-authenticated) .mobile-home {
    display: none !important;
  }
}

.login-screen {
  position: fixed;
  inset: 0;
  z-index: 3500;
  display: grid;
  place-items: center;
  padding: 20px;
  background:
    radial-gradient(circle at 50% 30%, rgba(90, 140, 255, 0.25), transparent 50%),
    linear-gradient(165deg, #060a14, #0f1a2e 50%, #0a1528);
}

.login-screen.hidden {
  display: none;
}

.login-card {
  width: min(400px, 100%);
  padding: 28px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface-solid);
  backdrop-filter: blur(12px);
  box-shadow: var(--window-shadow);
}

.login-card h1 {
  margin: 0 0 6px;
  font-size: 1.5rem;
}

.login-subtitle {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.9rem;
}

.login-error {
  min-height: 1.25em;
  margin: 0 0 12px;
  color: #ff8a8a;
  font-size: 0.88rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.login-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--muted);
}

.login-form input {
  font: inherit;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
}

.login-form button[type="submit"] {
  margin-top: 6px;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(111, 169, 255, 0.35);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}

.login-remember {
  flex-direction: row !important;
  align-items: center;
  gap: 10px !important;
}

.login-switch {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
}

.link-btn {
  border: none;
  background: none;
  color: var(--focus);
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
  padding: 0;
}

.logout-btn {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-radius: 8px;
  padding: 4px 10px;
  font-size: 0.75rem;
  cursor: pointer;
  margin-right: 8px;
}

.mobile-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.mobile-logout {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  flex-shrink: 0;
}

.nebula-browser {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-height: 0;
  height: 100%;
}

.nebula-browser-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.nebula-browser-toolbar button,
.nebula-forge-toolbar button {
  border: 1px solid rgba(173, 195, 231, 0.3);
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04));
  color: var(--text);
  padding: 7px 10px;
  cursor: pointer;
  line-height: 1;
  box-shadow:
    0 10px 18px rgba(0, 0, 0, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transition:
    transform 120ms ease,
    background 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.nebula-browser-toolbar button:hover,
.nebula-forge-toolbar button:hover {
  border-color: rgba(173, 195, 231, 0.6);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.06));
}

.nebula-browser-toolbar button:active,
.nebula-forge-toolbar button:active {
  transform: translateY(1px);
  box-shadow:
    0 6px 14px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.nebula-browser-toolbar button:focus-visible,
.nebula-forge-toolbar button:focus-visible {
  outline: 2px solid rgba(125, 185, 255, 0.85);
  outline-offset: 2px;
}

.nebula-browser-toolbar button:disabled,
.nebula-forge-toolbar button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.nebula-browser-toolbar button[data-surf-back],
.nebula-browser-toolbar button[data-surf-forward],
.nebula-browser-toolbar button[data-surf-refresh] {
  min-width: 38px;
  padding: 7px 0;
  font-weight: 700;
}

.nebula-browser-toolbar button[data-surf-go],
.nebula-forge-toolbar button[data-forge-save] {
  border-color: rgba(125, 185, 255, 0.75);
  background: linear-gradient(180deg, rgba(125, 185, 255, 0.38), rgba(125, 185, 255, 0.16));
}

.nebula-browser-toolbar button[data-surf-go]:hover,
.nebula-forge-toolbar button[data-forge-save]:hover {
  border-color: rgba(125, 185, 255, 0.95);
  background: linear-gradient(180deg, rgba(125, 185, 255, 0.46), rgba(125, 185, 255, 0.2));
}

.nebula-forge-toolbar button[data-forge-clear] {
  border-color: rgba(255, 138, 138, 0.55);
  background: linear-gradient(180deg, rgba(255, 138, 138, 0.22), rgba(255, 138, 138, 0.09));
}

.nebula-forge-toolbar button[data-forge-clear]:hover {
  border-color: rgba(255, 138, 138, 0.8);
  background: linear-gradient(180deg, rgba(255, 138, 138, 0.28), rgba(255, 138, 138, 0.12));
}

.nebula-browser-toolbar input[type="url"],
.nebula-browser-toolbar input[type="text"] {
  flex: 1;
  min-width: 140px;
  font: inherit;
  color: var(--text);
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
}

.nebula-browser-frame-wrap {
  flex: 1;
  min-height: 220px;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: rgba(0, 0, 0, 0.35);
  position: relative;
}

.nebula-browser-frame-wrap iframe {
  width: 100%;
  height: 100%;
  min-height: 220px;
  border: none;
  background: #fff;
}

.nebula-browser-hint {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.nebula-forge-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-height: 0;
}

.nebula-forge-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.nebula-forge-editor {
  flex: 1;
  min-height: 240px;
  width: 100%;
  resize: vertical;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.45;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.35);
  color: var(--text);
}

.app-window[data-app-id="nebulasurf"] .window-content,
.app-window[data-app-id="nebulaforge"] .window-content {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.skip-link {
  position: absolute;
  top: -50px;
  left: 12px;
  background: #fff;
  color: #000;
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 2000;
}

.skip-link:focus {
  top: 12px;
}

.desktop {
  position: fixed;
  inset: 0 0 var(--taskbar-height) 0;
  padding: 18px;
}

.desktop-icons {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  gap: 10px;
  max-width: 540px;
}

.desktop-icon {
  border: 1px solid transparent;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  padding: 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  cursor: pointer;
  transition: all 150ms ease;
}

.desktop-icon:hover,
.desktop-icon:focus-visible {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  outline: none;
}

.desktop-icon .icon-glyph {
  font-size: 1.6rem;
}

.desktop-icon .icon-label {
  font-size: 0.8rem;
  text-align: center;
}

.window-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.app-window {
  position: absolute;
  width: min(620px, calc(100vw - 60px));
  min-width: 280px;
  min-height: 180px;
  height: 420px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  box-shadow: var(--window-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  pointer-events: auto;
  transition: transform 120ms ease, opacity 140ms ease;
}

.app-window.minimized {
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px) scale(0.98);
}

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

.app-window:focus-within {
  border-color: rgba(126, 174, 255, 0.65);
}

.window-titlebar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(5, 10, 20, 0.35);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 10px 12px;
  cursor: grab;
  user-select: none;
}

.window-titlebar:active {
  cursor: grabbing;
}

.window-controls {
  display: flex;
  gap: 8px;
}

.control {
  width: 13px;
  height: 13px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
}

.control.close {
  background: #ff5f57;
}

.control.minimize {
  background: #febc2e;
}

.control.maximize {
  background: #28c840;
}

.control:focus-visible,
.titlebar-close:focus-visible,
.start-btn:focus-visible,
.task-item-main:focus-visible,
.task-item-close:focus-visible,
.launcher-app:focus-visible,
.mobile-tile:focus-visible,
.mobile-back:focus-visible,
.resize-handle:focus-visible,
.logout-btn:focus-visible,
.mobile-logout:focus-visible,
.link-btn:focus-visible,
.login-form button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.window-title {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.titlebar-close {
  margin-left: auto;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border-radius: 8px;
  height: 28px;
  padding: 0 10px;
  cursor: pointer;
}

.titlebar-close:hover {
  background: rgba(255, 95, 87, 0.18);
  border-color: rgba(255, 95, 87, 0.6);
}

.window-content {
  padding: 14px 16px 20px;
  overflow: auto;
  line-height: 1.45;
}

.window-content h4 {
  margin: 0 0 8px;
}

.window-content p,
.window-content li {
  color: var(--muted);
}

.window-content button,
.window-content input,
.window-content textarea {
  font: inherit;
  color: var(--text);
}

.window-content button {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  padding: 6px 10px;
  cursor: pointer;
}

.notes-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  resize: vertical;
}

.notes-actions {
  margin-top: 8px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 10px 0;
}

.explorer-layout {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 10px;
}

.explorer-folders {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.terminal-output {
  min-height: 150px;
  max-height: 220px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px;
  background: rgba(0, 0, 0, 0.3);
  font-family: Consolas, "Courier New", monospace;
}

.terminal-output p {
  margin: 0 0 6px;
}

.terminal-form {
  margin-top: 10px;
}

.terminal-form label {
  display: flex;
  gap: 8px;
  align-items: center;
}

.terminal-form input {
  width: 100%;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
}

.calendar-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
}

.cal-cell {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  min-height: 30px;
  display: grid;
  place-items: center;
  font-size: 0.82rem;
}

.cal-cell.today {
  border-color: rgba(125, 185, 255, 0.9);
  background: rgba(125, 185, 255, 0.2);
}

.cal-cell.muted {
  opacity: 0.5;
}

.cal-head {
  background: rgba(255, 255, 255, 0.08);
  font-weight: 600;
}

.music-controls,
.weather-actions,
.clock-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.music-progress {
  width: 100%;
}

.calc-display {
  width: 100%;
  margin-bottom: 10px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  text-align: right;
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.calc-clear {
  grid-column: 1 / -1;
}

.task-form {
  display: flex;
  gap: 8px;
}

.task-form input {
  flex: 1;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 8px;
}

.task-list {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.task-item-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: 6px 8px;
}

.clock-readout {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 10px;
}

.photo-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
}

.photo-tile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  text-align: left;
}

.photo-thumb {
  width: 100%;
  height: 86px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.photo-preview-image {
  margin-top: 10px;
  width: 100%;
  max-height: 240px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: block;
}

.mail-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mail-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  padding: 8px;
}

.mail-list li.unread {
  border-color: rgba(125, 185, 255, 0.8);
}

body.contrast-theme {
  --text: #ffffff;
  --muted: #e8efff;
  --border: rgba(255, 255, 255, 0.65);
  background: linear-gradient(140deg, #000, #111b35);
}

body.reduce-anim * {
  transition: none !important;
  animation: none !important;
}

.resize-handle {
  position: absolute;
  right: 4px;
  bottom: 4px;
  width: 16px;
  height: 16px;
  border: none;
  background: linear-gradient(135deg, transparent 55%, rgba(255, 255, 255, 0.45) 56%, transparent 57%);
  cursor: nwse-resize;
}

.taskbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--taskbar-height);
  background: rgba(6, 12, 21, 0.83);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
}

.start-btn {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border-radius: 10px;
  height: 40px;
  padding: 0 12px;
  cursor: pointer;
}

.task-items {
  display: flex;
  gap: 8px;
  flex: 1;
  min-width: 0;
  overflow-x: auto;
}

.task-item {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-radius: 10px;
  height: 40px;
  padding: 0 6px 0 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.task-item-main,
.task-item-close {
  border: none;
  background: transparent;
  color: inherit;
  height: 30px;
  border-radius: 8px;
}

.task-item-main {
  cursor: pointer;
  padding: 0 4px;
}

.task-item-close {
  cursor: pointer;
  width: 26px;
  min-width: 26px;
  font-size: 1rem;
  line-height: 1;
}

.task-item-close:hover {
  background: rgba(255, 255, 255, 0.14);
}

.task-item.active {
  background: rgba(111, 169, 255, 0.28);
  border-color: rgba(159, 197, 255, 0.9);
}

.task-item.min {
  opacity: 0.72;
}

.tray {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  min-width: 120px;
  font-weight: 600;
}

.surf-bookmark-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.launcher {
  position: fixed;
  left: 12px;
  bottom: calc(var(--taskbar-height) + 8px);
  width: min(360px, calc(100vw - 24px));
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface-solid);
  backdrop-filter: blur(10px);
  box-shadow: var(--window-shadow);
  padding: 14px;
  z-index: 1500;
}

.launcher.hidden {
  display: none;
}

.launcher h3 {
  margin: 0 0 12px;
  font-size: 0.95rem;
}

.launcher-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.launcher-app {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-radius: 10px;
  padding: 10px;
  text-align: left;
  cursor: pointer;
}

.boot-screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 20% 20%, #2e4f89, #090f1a 60%);
  z-index: 3000;
  transition: opacity 500ms ease;
}

.boot-screen.hidden {
  opacity: 0;
  pointer-events: none;
}

.boot-card {
  text-align: center;
}

.boot-card h1 {
  margin: 0 0 8px;
}

.boot-card p {
  margin: 0;
  color: #d8e8ff;
}

.boot-loader {
  margin: 20px auto 0;
  width: 42px;
  height: 42px;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top-color: #9bccff;
  border-radius: 999px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.mobile-home {
  display: none;
}

@media (max-width: 820px) {
  body {
    overflow: auto;
  }

  .desktop,
  .taskbar,
  .launcher {
    display: none;
  }

  .mobile-home {
    display: block;
    min-height: 100vh;
    padding: 16px;
  }

  .mobile-home h2 {
    margin: 0;
  }

  .mobile-home p {
    margin: 6px 0 14px;
    color: var(--muted);
  }

  .mobile-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .mobile-tile {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.07);
    color: var(--text);
    padding: 14px;
    cursor: pointer;
    text-align: left;
  }

  .mobile-app-view {
    margin-top: 14px;
  }

  .explorer-layout {
    grid-template-columns: 1fr;
  }

  .mobile-panel {
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface-solid);
    padding: 14px;
  }

  .mobile-back {
    margin-top: 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text);
    padding: 8px 10px;
    cursor: pointer;
  }
}