:root {
  --bg-desktop: radial-gradient(circle at top, #1f2937 0, #020617 55%, #000 100%);
  --accent: #0ea5e9;
  --accent-2: #6366f1;
  --text-main: #0f172a;
  --text-sub: #6b7280;
  --code-bg: #020617;
  --code-border: #1f2937;
  --log-bg: #020617;
  --log-text: #9ca3af;
  --radius-window: 26px;
  --radius-panel: 18px;
  --shadow-window: 0 40px 90px rgba(0, 0, 0, 0.6);
  --shadow-soft: 0 20px 50px rgba(15, 23, 42, 0.4);
}

body.dark {
  --bg-desktop: radial-gradient(circle at top, #020617 0, #020617 60%, #000 100%);
  --text-main: #e5e7eb;
  --text-sub: #9ca3af;
  --code-bg: #020617;
  --code-border: #1f2937;
  --log-bg: #020617;
  --log-text: #9ca3af;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-desktop);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Helvetica Neue", sans-serif;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.desktop {
  width: 100%;
  max-width: 960px;
}

/* Control Center Toggle */
.control-center-toggle {
  position: fixed;
  top: 18px;
  right: 18px;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.85);
  color: #e5e7eb;
  font-size: 16px;
  cursor: pointer;
  z-index: 1100;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}
body.dark .control-center-toggle {
  background: rgba(15, 23, 42, 0.9);
}

/* Control Center Panel */
.control-center {
  position: fixed;
  top: 60px;
  right: 18px;
  width: 260px;
  border-radius: 18px;
  padding: 12px;
  background: rgba(248, 250, 252, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.6);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(26px) saturate(180%);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  z-index: 1200;
  display: none;
}
body.dark .control-center {
  background: rgba(15, 23, 42, 0.96);
  border-color: rgba(30, 64, 175, 0.7);
}

.cc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-sub);
  margin-bottom: 8px;
}
.cc-close {
  border: none;
  background: transparent;
  color: var(--text-sub);
  cursor: pointer;
  font-size: 12px;
}
.cc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.cc-tile {
  border-radius: 12px;
  padding: 8px 10px;
  background: rgba(248, 250, 252, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.6);
}
body.dark .cc-tile {
  background: rgba(15, 23, 42, 0.95);
}
.cc-label {
  font-size: 11px;
  color: var(--text-sub);
  margin-bottom: 4px;
}
.cc-switch,
.cc-select {
  width: 100%;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(255, 255, 255, 0.9);
  padding: 6px 10px;
  font-size: 11px;
  cursor: pointer;
}
body.dark .cc-switch,
body.dark .cc-select {
  background: rgba(15, 23, 42, 0.95);
  color: var(--text-main);
}

/* Window */
.window {
  width: 100%;
  border-radius: var(--radius-window);
  box-shadow: var(--shadow-window);
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.4);
  animation: window-pop 0.35s cubic-bezier(0.19, 1, 0.22, 1);
}
@keyframes window-pop {
  0% { transform: scale(0.96) translateY(8px); opacity: 0; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}
.glass {
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  background:
    radial-gradient(circle at top left, rgba(244, 244, 245, 0.9), transparent 55%),
    radial-gradient(circle at bottom right, rgba(191, 219, 254, 0.7), transparent 55%),
    rgba(248, 250, 252, 0.85);
}
body.dark .glass {
  background:
    radial-gradient(circle at top left, rgba(30, 64, 175, 0.6), transparent 55%),
    radial-gradient(circle at bottom right, rgba(15, 23, 42, 0.9), transparent 55%),
    rgba(15, 23, 42, 0.9);
  border-color: rgba(30, 64, 175, 0.7);
}

/* Titlebar */
.titlebar {
  height: 38px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.4);
}
.traffic {
  display: flex;
  gap: 6px;
  margin-right: 10px;
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.15);
}
.red { background: #ff5f57; }
.yellow { background: #febc2e; }
.green { background: #28c840; }
.title {
  font-size: 12px;
  color: var(--text-sub);
}
.title-actions {
  margin-left: auto;
}
.chip {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(248, 250, 252, 0.7);
  padding: 3px 10px;
  font-size: 12px;
  cursor: pointer;
}
body.dark .chip {
  background: rgba(15, 23, 42, 0.85);
}

/* Layout */
.content {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 16px;
  padding: 16px;
}
.panel {
  border-radius: var(--radius-panel);
  background: rgba(248, 250, 252, 0.9);
  border: 1px solid rgba(148, 163, 184, 0.5);
  box-shadow: var(--shadow-soft);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.18s ease-out, box-shadow 0.18s ease-out;
}
.panel:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.45);
}
body.dark .panel {
  background: rgba(15, 23, 42, 0.92);
  border-color: rgba(30, 64, 175, 0.7);
}

/* Widget Panel */
.widget-panel {
  display: flex;
  flex-direction: column;
}
.widget-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.widget-card {
  border-radius: 14px;
  padding: 8px 10px;
  background: rgba(248, 250, 252, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.6);
}
body.dark .widget-card {
  background: rgba(15, 23, 42, 0.96);
}
.widget-title {
  font-size: 11px;
  color: var(--text-sub);
  margin-bottom: 4px;
}
.widget-value {
  font-size: 13px;
  font-weight: 600;
}

/* Text & Inputs */
.heading {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
}
.sub {
  margin: 0;
  font-size: 12px;
  color: var(--text-sub);
}
.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.field label {
  font-size: 12px;
  color: var(--text-sub);
}
.hint {
  font-size: 11px;
  color: var(--text-sub);
}
.input {
  width: 100%;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(255, 255, 255, 0.9);
  padding: 7px 12px;
  font-size: 12px;
  outline: none;
}
body.dark .input {
  background: rgba(15, 23, 42, 0.95);
  color: var(--text-main);
}
.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.4);
}

/* Buttons */
.btn {
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 12px;
  padding: 7px 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.ghost {
  background: transparent;
  border-color: rgba(148, 163, 184, 0.7);
  color: var(--text-sub);
}
.small {
  padding: 4px 10px;
  font-size: 11px;
}
.full {
  width: 100%;
}
.btn:disabled {
  opacity: 0.5;
  cursor: default;
}

/* Result */
.result-display {
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.95);
  color: #e5e7eb;
  padding: 10px 12px;
  font-size: 16px;
  font-weight: 600;
  text-align: right;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
}

/* Info / Log */
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-sub);
}
.log {
  background: var(--log-bg);
  border-radius: 16px;
  border: 1px solid #1f2937;
  padding: 8px;
  color: var(--log-text);
  font-size: 11px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  min-height: 120px;
  max-height: 200px;
  overflow: auto;
}

/* Chart */
.chart {
  width: 100%;
  height: 140px;
  border-radius: 14px;
  background: var(--log-bg);
  border: 1px solid #1f2937;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.5);
}
.chart-label {
  font-size: 11px;
  color: var(--text-sub);
}

/* Unit description */
.unit-description {
  border-radius: 14px;
  padding: 10px 12px;
  background: rgba(248, 250, 252, 0.95);
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.5;
  min-height: 60px;
}
body.dark .unit-description {
  background: rgba(15, 23, 42, 0.96);
}

/* Dock Footer */
.footer {
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 40px);
  max-width: 900px;
  padding: 10px 18px 8px;
  text-align: center;
  z-index: 9999;
  border-radius: 22px;
  overflow: hidden;
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: transform 0.18s ease-out, box-shadow 0.18s ease-out;
}
.dock-footer {
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow:
    0 8px 30px rgba(0, 0, 0, 0.25),
    inset 0 0 0 0.5px rgba(255, 255, 255, 0.4);
  position: relative;
}
body.dark .dock-footer {
  background: rgba(15, 23, 42, 0.45);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow:
    0 8px 30px rgba(0, 0, 0, 0.6),
    inset 0 0 0 0.5px rgba(255, 255, 255, 0.15);
}
.footer:hover {
  transform: translateX(-50%) translateY(-4px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.5);
}
.dock-glow {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 40px;
  background: radial-gradient(
    ellipse at center,
    rgba(255, 255, 255, 0.35),
    transparent 70%
  );
  filter: blur(18px);
  pointer-events: none;
}
body.dark .dock-glow {
  background: radial-gradient(
    ellipse at center,
    rgba(255, 255, 255, 0.15),
    transparent 70%
  );
}

/* Dock Icons */
.dock-icons {
  display: flex;
  gap: 10px;
  margin-bottom: 2px;
}
.dock-icon {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(248, 250, 252, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  transition: transform 0.16s ease-out, box-shadow 0.16s ease-out,
    background 0.16s ease-out;
}
body.dark .dock-icon {
  background: rgba(15, 23, 42, 0.95);
}
.dock-icon:hover {
  transform: translateY(-6px) scale(1.08);
  box-shadow: 0 14px 26px rgba(15, 23, 42, 0.5);
}
.dock-icon.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.5);
}

.footer p {
  margin: 0;
  font-size: 11px;
  color: var(--text-sub);
  font-weight: 500;
  letter-spacing: 0.2px;
}

/* Responsive */
@media (max-width: 900px) {
  .content {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 600px) {
  .window {
    border-radius: 22px;
  }
  .content {
    padding: 12px;
  }
  .panel {
    padding: 12px;
  }
  .footer {
    width: calc(100% - 20px);
    padding: 8px 12px 6px;
    border-radius: 18px;
    bottom: 12px;
  }
  .dock-icon {
    width: 30px;
    height: 30px;
    font-size: 16px;
  }
  .footer p {
    font-size: 10px;
  }
}