/* Sonar Tamagotchi — CRT terminal styles */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=VT323&family=Share+Tech+Mono&display=swap');

:root {
  --bg: #000000;
  --hue: 155;
  --phos: oklch(0.85 0.22 var(--hue));
  --phos-mid: oklch(0.65 0.18 var(--hue));
  --phos-dim: oklch(0.45 0.12 var(--hue));
  --phos-grid: oklch(0.32 0.08 var(--hue) / 0.6);
  --phos-faint: oklch(0.25 0.05 var(--hue) / 0.4);
  --scan-strength: 0.18;
  --noise-strength: 0.08;
  --glow-strength: 1;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: #0a0a0a;
  font-family: 'JetBrains Mono', monospace;
  color: var(--phos);
  overflow: hidden;
  height: 100%;
}

#root {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at center, #1a1a1a 0%, #050505 70%, #000 100%);
}

/* —————— CRT effects (composable) —————— */
.crt-screen {
  position: relative;
  background: #000;
  overflow: hidden;
  font-family: 'VT323', 'JetBrains Mono', monospace;
  color: var(--phos);
}

.crt-screen .crt-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center,
    oklch(0.10 0.04 var(--hue)) 0%,
    oklch(0.06 0.02 var(--hue)) 50%,
    #000 100%);
  pointer-events: none;
}

/* sonar grid: subtle major + minor lines + tick marks */
.crt-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--phos-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--phos-grid) 1px, transparent 1px),
    linear-gradient(to right, var(--phos-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--phos-faint) 1px, transparent 1px);
  background-size: 90px 90px, 90px 90px, 18px 18px, 18px 18px;
  background-position: 0 0, 0 0, 0 0, 0 0;
  opacity: 0.55;
  mix-blend-mode: screen;
}

/* dotted ruler ticks — top + bottom */
.crt-ticks {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle, var(--phos-dim) 0.6px, transparent 0.6px),
    radial-gradient(circle, var(--phos-dim) 0.6px, transparent 0.6px);
  background-size: 9px 1px, 1px 9px;
  background-position: 0 4px, 4px 0;
  opacity: 0.5;
}

/* scanlines — horizontal pinstripes */
.crt-scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(0,0,0,calc(var(--scan-strength) * 1.6)) 2px,
    rgba(0,0,0,calc(var(--scan-strength) * 1.6)) 3px
  );
  mix-blend-mode: multiply;
  z-index: 9;
}

/* Larger rolling scan band */
.crt-scanband {
  position: absolute;
  left: 0; right: 0;
  height: 80px;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    oklch(1 0 0 / 0.04) 50%,
    transparent 100%
  );
  pointer-events: none;
  animation: scanband 7s linear infinite;
  z-index: 10;
}
@keyframes scanband {
  0% { top: -10%; }
  100% { top: 110%; }
}

/* Noise via SVG fractal */
.crt-noise {
  position: absolute;
  inset: -20%;
  pointer-events: none;
  opacity: var(--noise-strength);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.6  0 0 0 0 1  0 0 0 0 0.7  0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size: 200px 200px;
  mix-blend-mode: screen;
  animation: noise 0.4s steps(2) infinite;
  z-index: 11;
}
@keyframes noise {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(-5px, 3px); }
  50% { transform: translate(3px, -2px); }
  75% { transform: translate(-2px, -3px); }
}

/* Vignette */
.crt-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at center,
    transparent 50%,
    rgba(0,0,0,0.6) 100%);
  z-index: 12;
}

/* Glow blur layer */
.crt-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  filter: blur(2px);
  opacity: calc(0.5 * var(--glow-strength));
  mix-blend-mode: screen;
  z-index: 6;
}

/* Subtle horizontal flicker */
.crt-flicker {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: oklch(0.7 0.18 var(--hue) / 0.02);
  animation: flicker 2.6s infinite;
  z-index: 13;
}
@keyframes flicker {
  0%, 96%, 100% { opacity: 0; }
  97% { opacity: 0.4; }
  98% { opacity: 0.1; }
  99% { opacity: 0.6; }
}

/* —————— Target brackets —————— */
.target-bracket {
  position: absolute;
  width: 22px;
  height: 22px;
  pointer-events: none;
}
.target-bracket::before,
.target-bracket::after {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border: 1px solid var(--phos-mid);
}
.target-bracket::before {
  top: 0; left: 0;
  border-right: none;
  border-bottom: none;
}
.target-bracket::after {
  bottom: 0; right: 0;
  border-left: none;
  border-top: none;
}
.target-bracket .dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  background: var(--phos-mid);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

/* —————— HUD chrome —————— */
.hud-corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--phos-mid);
}
.hud-corner.tl { top: 4px; left: 4px; border-right: none; border-bottom: none; }
.hud-corner.tr { top: 4px; right: 4px; border-left: none; border-bottom: none; }
.hud-corner.bl { bottom: 4px; left: 4px; border-right: none; border-top: none; }
.hud-corner.br { bottom: 4px; right: 4px; border-left: none; border-top: none; }

/* —————— Text helpers —————— */
.t-mono { font-family: 'JetBrains Mono', monospace; }
.t-pixel { font-family: 'VT323', monospace; }
.t-tech { font-family: 'Share Tech Mono', monospace; }

.glow {
  text-shadow:
    0 0 4px var(--phos),
    0 0 12px var(--phos-mid);
}
.glow-soft {
  text-shadow: 0 0 6px var(--phos-mid);
}

/* —————— Buttons / pads —————— */
.cmd-btn {
  background: oklch(0.12 0.04 var(--hue));
  border: 1px solid var(--phos-grid);
  color: var(--phos);
  padding: 10px 6px;
  font-family: 'VT323', monospace;
  font-size: 17px;
  letter-spacing: 0.08em;
  cursor: pointer;
  position: relative;
  text-transform: uppercase;
  transition: background 0.1s, border-color 0.1s;
  user-select: none;
}
.cmd-btn:hover {
  background: oklch(0.18 0.06 var(--hue));
  border-color: var(--phos-mid);
}
.cmd-btn:active,
.cmd-btn.active {
  background: oklch(0.25 0.10 var(--hue));
  border-color: var(--phos);
  color: var(--phos);
  text-shadow: 0 0 4px var(--phos);
}
.cmd-btn .key {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  position: absolute;
  top: 4px;
  left: 5px;
  color: var(--phos-dim);
}
.cmd-btn .lbl {
  text-shadow: 0 0 4px var(--phos-mid);
}

/* —————— Tab bar —————— */
.tab-bar {
  display: flex;
  border-top: 1px solid var(--phos-grid);
}
.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  border-right: 1px solid var(--phos-grid);
  color: var(--phos-dim);
  padding: 10px 0 8px;
  font-family: 'VT323', monospace;
  font-size: 17px;
  letter-spacing: 0.12em;
  cursor: pointer;
  position: relative;
  text-transform: uppercase;
}
.tab-btn:last-child { border-right: none; }
.tab-btn.active {
  color: var(--phos);
  background: oklch(0.13 0.04 var(--hue));
  text-shadow: 0 0 6px var(--phos-mid);
}
.tab-btn .num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 8px;
  display: block;
  opacity: 0.5;
  letter-spacing: 0.1em;
  margin-bottom: 2px;
}

/* —————— Status gauges —————— */
.gauge {
  display: flex;
  align-items: center;
  gap: 6px;
}
.gauge-label {
  font-family: 'VT323', monospace;
  font-size: 14px;
  color: var(--phos-mid);
  width: 64px;
  letter-spacing: 0.05em;
}
.gauge-track {
  flex: 1;
  height: 7px;
  background: oklch(0.10 0.02 var(--hue));
  border: 1px solid var(--phos-grid);
  position: relative;
  overflow: hidden;
}
.gauge-fill {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  background: var(--phos);
  box-shadow: 0 0 6px var(--phos);
  transition: width 0.4s cubic-bezier(.5,0,.5,1);
}
.gauge-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--phos-mid);
  width: 30px;
  text-align: right;
}

/* Scanning effect on ping */
@keyframes ping-sweep {
  0% { transform: translateX(-110%); opacity: 0; }
  10% { opacity: 1; }
  100% { transform: translateX(110%); opacity: 0; }
}
.ping-sweep {
  position: absolute;
  top: 0; bottom: 0;
  left: 0;
  width: 30%;
  pointer-events: none;
  background: linear-gradient(to right,
    transparent 0%,
    oklch(0.85 0.18 var(--hue) / 0.12) 60%,
    oklch(0.85 0.18 var(--hue) / 0.6) 95%,
    oklch(0.95 0.20 var(--hue) / 0.95) 100%);
  box-shadow: 0 0 20px var(--phos);
  z-index: 5;
}
.ping-sweep.run {
  animation: ping-sweep 1.6s cubic-bezier(.4,0,.2,1) forwards;
}

/* —————— Terminal —————— */
.term-line {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  line-height: 1.5;
  color: var(--phos);
  white-space: pre-wrap;
  word-break: break-word;
}
.term-line.dim { color: var(--phos-mid); }
.term-line.faint { color: var(--phos-dim); }
.term-line.warn { color: oklch(0.85 0.20 75); }

.term-prompt {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  color: var(--phos);
}
.term-input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--phos);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  flex: 1;
  caret-color: transparent;
  padding: 0;
}
.term-cursor {
  display: inline-block;
  width: 7px;
  height: 12px;
  background: var(--phos);
  vertical-align: text-bottom;
  margin-bottom: -1px;
  animation: blink 1s steps(2) infinite;
  box-shadow: 0 0 4px var(--phos);
}
@keyframes blink { 50% { opacity: 0; } }

/* Status banner / readouts */
.readout-row {
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  color: var(--phos-mid);
  letter-spacing: 0.04em;
}
.readout-row b { color: var(--phos); font-weight: 500; }

/* Pulsing dot for alive indicator */
@keyframes alive-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 4px var(--phos); }
  50% { opacity: 0.4; box-shadow: 0 0 2px var(--phos); }
}
.alive-dot {
  width: 6px;
  height: 6px;
  background: var(--phos);
  border-radius: 50%;
  animation: alive-pulse 1.4s ease-in-out infinite;
}

/* Bezel variants */
.bezel-military {
  background: linear-gradient(180deg, #2b2e26 0%, #1a1c17 100%);
  border: 2px solid #3a3e34;
  box-shadow:
    inset 0 0 0 1px #5a5d4f,
    inset 0 0 8px rgba(0,0,0,0.7),
    0 8px 24px rgba(0,0,0,0.5);
}
.bezel-vintage {
  background: linear-gradient(180deg, #3d342a 0%, #2a241c 100%);
  border: 2px solid #4d4234;
  box-shadow:
    inset 0 0 0 1px #6b5a45,
    inset 0 0 8px rgba(0,0,0,0.7);
}
.bezel-minimal {
  background: #0a0a0a;
  border: 1px solid #1a1a1a;
}

/* Small label tags */
.tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.08em;
  padding: 2px 5px;
  border: 1px solid var(--phos-grid);
  color: var(--phos-mid);
  text-transform: uppercase;
}
.tag.on {
  border-color: var(--phos);
  color: var(--phos);
  background: oklch(0.18 0.06 var(--hue));
}

/* Hide scrollbar but allow scroll */
.no-scrollbar::-webkit-scrollbar { display: none; }
.no-scrollbar { scrollbar-width: none; }