/* =========================
   BASE
========================= */
:root {
  --kernel:     #00cd00;
  --kernel-dim: #007a00;
  --kernel-dark:#001a00;
  --player:     #00ffff;
  --bg:         #020802;
  --panel-bg:   #030d03;
  --panel-border:#0a2a0a;
  --text:       #00cd00;
  --text-dim:   #006600;
  --accent:     #00ffff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  cursor: none !important;
}

html, body {
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Courier New', Courier, monospace;
  overflow: hidden;
}

/* =========================
   SCANLINES
========================= */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 180, 0, 0.03),
    rgba(0, 180, 0, 0.03) 1px,
    transparent 1px,
    transparent 3px
  );
  z-index: 999;
}

/* =========================
   CURSOR
========================= */
.custom-cursor {
  position: fixed;
  width: 16px;
  height: 16px;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  filter:
    drop-shadow(0 0 2px #000)
    drop-shadow(0 0 4px #00cd00);
}

/* =========================
   HEADER
========================= */
header {
  padding: 20px;
  border-bottom:
    1px solid #00cd00;
}

.logo {
  font-size: 18px;
  letter-spacing: 2px;
}

.logo,
.logo:visited,
.logo:hover,
.logo:active {
  color: var(--kernel-dim);
  text-decoration: none;
}

.logo:hover {
  color: var(--kernel);
  text-shadow: 0 0 8px var(--kernel);
}

/* =========================
   OVERLAY SCREENS
========================= */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  z-index: 500;
  background: var(--bg);
}

.overlay-white {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 600;
  background: #ffffff;
  opacity: 0;
  transition: opacity 1s ease;
}

.overlay-white.visible {
  opacity: 1;
}

#win-text {
  font-family: 'Courier New', Courier, monospace;
  font-size: clamp(1.4rem, 3vw, 2.5rem);
  letter-spacing: 0.2em;
  color: #000000;
}

.overlay-line {
  font-size: clamp(0.9rem, 2vw, 1.3rem);
  letter-spacing: 0.12em;
  color: var(--kernel);
  text-shadow: 0 0 10px var(--kernel-dim);
}

.overlay-line.dim {
  color: var(--text-dim);
  text-shadow: none;
  font-size: 0.9rem;
}

.overlay-timer {
  font-size: clamp(3rem, 10vw, 6rem);
  letter-spacing: 0.15em;
  color: var(--kernel);
  text-shadow: 0 0 20px var(--kernel), 0 0 60px var(--kernel-dim);
  animation: timerPulse 2s ease-in-out infinite;
}

/* Boss mode buttons */
#boss-options {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
}

.boss-btn {
  background: transparent;
  border: 1px solid var(--kernel-dim);
  color: var(--text-dim);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  padding: 0.6rem 2rem;
  cursor: none !important;
  transition: all 0.2s;
}

.boss-btn:hover {
  border-color: var(--kernel);
  color: var(--kernel);
  text-shadow: 0 0 8px var(--kernel);
  background: rgba(0, 205, 0, 0.05);
}

.boss-btn.accent {
  border-color: var(--accent);
  color: var(--accent);
}

.boss-btn.accent:hover {
  background: rgba(0, 255, 255, 0.05);
  text-shadow: 0 0 8px var(--accent);
}

/* =========================
   LAYOUT
========================= */
.system {
  display: grid;
  grid-template-columns: 220px 1fr 220px;
  height: calc(100vh - 42px);
  gap: 0;
}

/* =========================
   SIDE PANELS
========================= */
.side-panel {
  background: var(--panel-bg);
  border-right: 1px solid var(--panel-border);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
}

.side-panel:last-child {
  border-right: none;
  border-left: 1px solid var(--panel-border);
}

.panel-block {
  border: 1px solid var(--panel-border);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.panel-title {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--kernel-dim);
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 6px;
  margin-bottom: 4px;
}

.info-line {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text);
  line-height: 1.6;
}

.info-line.dim {
  color: var(--text-dim);
}

.info-line.accent {
  color: var(--accent);
  font-size: 0.65rem;
  word-break: break-all;
  line-height: 1.4;
}

/* HP bar */
.hp-bar-wrap {
  width: 100%;
  height: 6px;
  background: var(--panel-border);
  border: 1px solid var(--kernel-dark);
  margin-top: 4px;
}

#hp-bar {
  height: 100%;
  width: 100%;
  background: var(--player);
  transition: width 0.1s linear;
}

/* =========================
   CENTER PANEL
========================= */
.center-panel {
  display: flex;
  flex-direction: column;
  background: #000000;
}

.info-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 16px;
  background: var(--panel-bg);
  border-bottom: 1px solid var(--panel-border);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  flex-shrink: 0;
}

.info-bar:last-child {
  border-bottom: none;
  border-top: 1px solid var(--panel-border);
}

#bar-timer {
  font-size: 1.2rem;
  color: var(--kernel);
  text-shadow: 0 0 8px var(--kernel-dim);
}

.canvas-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
}

#game {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* =========================
   UTILITIES
========================= */
.hidden { display: none !important; }

/* =========================
   SCROLLBAR
========================= */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--kernel-dim);
  border-radius: 3px;
}

/* =========================
   ANIMATIONS
========================= */
@keyframes timerPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}