:root {
  --gwap-neon: #00ff4a;
  --gwap-neon-soft: #57ff9a;
  --gwap-bg: #03040a;
  --gwap-bg-soft: #050814;
  --gwap-border: #1bff7b55;
  --gwap-white: #f5f5f5;
  --gwap-red: #ff3366;
  --gwap-yellow: #ffd54a;
  --gwap-radius-xl: 18px;
  --gwap-radius-lg: 14px;
  --gwap-radius-md: 10px;
  --gwap-shadow-soft: 0 0 40px rgba(0,255,90,0.25);
  --gwap-shadow-hard: 0 0 80px rgba(0,255,90,0.55);
  --gwap-grid-line: rgba(0,255,120,0.12);
  --gwap-font-main: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

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

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top, #08121f 0%, #020308 55%, #000000 100%);
  color: var(--gwap-white);
  font-family: var(--gwap-font-main);
  overflow: hidden;
}

/* Root layout */
#gwapos-root {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  grid-template-rows: 40px minmax(0, 1fr);
  background: transparent;
}

/* Background orb */
.bg-orb {
  position: fixed;
  inset: auto -20% -35% auto;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, #00ff4a 0%, #00d43b 60%, rgba(0,255,96,0.0) 75%);
  opacity: 0.12;
  filter: blur(4px);
  transform: translate3d(0,0,0);
  pointer-events: none;
  z-index: 0;
  animation: orb-breathe 10s ease-in-out infinite;
}

/* Grid overlay */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--gwap-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--gwap-grid-line) 1px, transparent 1px);
  background-size: 80px 80px;
  mix-blend-mode: screen;
  opacity: 0.1;
  pointer-events: none;
  z-index: 0;
}

/* Sidebar */
.os-sidebar {
  grid-row: 1 / span 2;
  grid-column: 1;
  padding: 10px 10px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: linear-gradient(180deg, #050912 0%, #020308 100%);
  border-right: 1px solid var(--gwap-border);
  box-shadow: 6px 0 24px rgba(0,0,0,0.65);
  z-index: 3;
}

.os-logo {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: #020308;
  background: radial-gradient(circle at 20% 0%, #ffffff 0%, #d5ffd5 40%, #00ff4a 100%);
  box-shadow: var(--gwap-shadow-hard);
}

.nav-btn {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: rgba(11,16,26,0.9);
  color: var(--gwap-neon-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.18s ease-out;
  font-size: 18px;
}

.nav-btn:hover {
  border-color: var(--gwap-neon-soft);
  box-shadow: var(--gwap-shadow-soft);
  transform: translateY(-1px);
}

.nav-btn.active {
  background: radial-gradient(circle, rgba(0,255,102,0.16) 0%, rgba(0,0,0,0.95) 75%);
  border-color: var(--gwap-neon);
  box-shadow: var(--gwap-shadow-soft);
}

.os-sidebar-bottom {
  margin-top: auto;
  font-size: 9px;
  text-align: center;
  opacity: 0.7;
}

/* Top bar */
.os-topbar {
  grid-row: 1;
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 18px;
  background: linear-gradient(90deg, rgba(0,0,0,0.98), rgba(0,20,12,0.9));
  border-bottom: 1px solid var(--gwap-border);
  z-index: 2;
}

.os-title {
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gwap-neon-soft);
}

.os-top-right {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
}

.os-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--gwap-neon);
  box-shadow: 0 0 12px rgba(0,255,102,0.8);
}

.os-status-label {
  font-weight: 600;
  color: var(--gwap-neon-soft);
}

.os-clock {
  padding-left: 10px;
  border-left: 1px solid rgba(255,255,255,0.16);
  color: rgba(255,255,255,0.75);
}

/* Main shell */
.os-main {
  grid-row: 2;
  grid-column: 2;
  position: relative;
  padding: 18px 18px 22px 18px;
  z-index: 1;
}

.os-panel {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: var(--gwap-radius-xl);
  border: 1px solid rgba(0,255,120,0.25);
  background: radial-gradient(circle at top left, rgba(0,255,120,0.16), rgba(2,4,10,0.96));
  box-shadow: 0 0 0 1px rgba(0,0,0,0.85), var(--gwap-shadow-soft);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(22px);
}

/* Boot state */
.os-panel--boot {
  align-items: center;
  justify-content: center;
}

.boot-copy {
  text-align: center;
  max-width: 520px;
  padding: 30px;
}

.boot-copy h1 {
  font-size: 26px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.boot-copy h1 span {
  color: var(--gwap-neon-soft);
}

.boot-copy p {
  margin-top: 10px;
  font-size: 13px;
  color: rgba(245,245,245,0.8);
}

/* Loaded app panels */
.os-panel-inner {
  padding: 18px 20px;
  overflow-y: auto;
}

/* Panel header */
.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.panel-title {
  font-size: 18px;
  font-weight: 600;
}

.panel-tag {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(0,0,0,0.6);
}

.panel-body {
  margin-top: 6px;
  font-size: 13px;
  color: rgba(245,245,245,0.86);
}

/* Simple card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.card {
  border-radius: var(--gwap-radius-md);
  padding: 10px 12px;
  background: rgba(0,0,0,0.55);
  border: 1px solid rgba(0,255,120,0.16);
}

.card-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0.7;
}

.card-value {
  margin-top: 4px;
  font-size: 14px;
}

/* Panel transitions (Hybrid StrikeDrift) */
.os-panel--enter {
  animation: panel-enter 0.42s cubic-bezier(0.26, 0.79, 0.3, 1.01);
}

.os-panel--exit {
  animation: panel-exit 0.3s cubic-bezier(0.7, 0.02, 0.84, 0.47) forwards;
}

/* Samurai shards mask (simple) */
.os-panel::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: conic-gradient(from 140deg, rgba(0,255,120,0.15), transparent 15%, transparent 70%, rgba(0,255,120,0.12));
  mix-blend-mode: screen;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease-out;
}

.os-panel--energize::before {
  opacity: 0.7;
  animation: shards 0.55s ease-out forwards;
}

/* Scrollbars */
.os-panel-inner::-webkit-scrollbar {
  width: 8px;
}
.os-panel-inner::-webkit-scrollbar-thumb {
  background: rgba(0,255,120,0.4);
  border-radius: 999px;
}

/* Animations */
@keyframes orb-breathe {
  0%, 100% { transform: translate3d(0, 10px, 0) scale(1); opacity: 0.12; }
  50%      { transform: translate3d(0, -18px, 0) scale(1.08); opacity: 0.22; }
}

@keyframes panel-enter {
  0%   { opacity: 0; transform: translate3d(18px, 8px, 0) scale(0.96); }
  100% { opacity: 1; transform: translate3d(0,0,0) scale(1); }
}

@keyframes panel-exit {
  0%   { opacity: 1; transform: translate3d(0,0,0) scale(1); }
  100% { opacity: 0; transform: translate3d(-18px, -12px, 0) scale(0.96); }
}

@keyframes shards {
  0%   { opacity: 0.8; transform: translate3d(0,0,0) skewX(-4deg); }
  100% { opacity: 0;   transform: translate3d(-10px,-6px,0) skewX(2deg); }
}

/* Mobile-ish */
@media (max-width: 768px) {
  #gwapos-root {
    grid-template-columns: 54px minmax(0,1fr);
  }
  .os-main {
    padding: 10px;
  }
}