/* ═══════════════════════════════════════════════════
   MU/TH/UR 6000 — NOSTROMO CRT TERMINAL THEME
   Inspired by Alien (1979) computer interfaces
   ═══════════════════════════════════════════════════ */

:root {
  --cyan: #5dd5e5;
  --cyan-bright: #aeefff;
  --cyan-dim: #2a8a96;
  --cyan-deep: #0d4048;
  --cyan-glow: rgba(93, 213, 229, 0.4);
  --cyan-glow-soft: rgba(93, 213, 229, 0.15);
  --blue: #4080a0;
  --bg: #000408;
  --bg-panel: #000810;
  --bg-deep: #000204;
  --border: #1a3540;
  --border-bright: #2a6878;
  --danger: #ff4040;
  --danger-glow: rgba(255, 64, 64, 0.5);
  --white: #c0e8f0;
  --dim: #1a4a55;

  --font-crt: 'VT323', 'Courier New', monospace;
  --font-mono: 'Share Tech Mono', 'Courier New', monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--cyan);
  font-family: var(--font-crt);
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-font-smoothing: none;
  font-smooth: never;
}

/* ── INSTALL PROMPT (PWA install instructions) ──── */

#install-prompt {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 4vh 5vw;
  overflow-y: auto;
}

#install-prompt.hidden {
  display: none;
}

.install-content {
  text-align: center;
  max-width: 700px;
  width: 100%;
  font-family: var(--font-crt);
}

.install-title {
  font-size: clamp(20px, 4vw, 32px);
  color: var(--cyan-bright);
  letter-spacing: 3px;
  text-shadow: 0 0 10px var(--cyan), 0 0 30px var(--cyan-glow);
  margin-bottom: 2vh;
  animation: subtle-flicker 3s infinite;
}

.install-subtitle {
  font-size: clamp(13px, 2vw, 16px);
  color: var(--cyan-dim);
  letter-spacing: 2px;
  margin-bottom: 3vh;
}

.install-steps {
  display: flex;
  flex-direction: column;
  gap: 1.5vh;
  text-align: left;
  max-width: 600px;
  margin: 0 auto 3vh;
}

.install-step {
  font-size: clamp(14px, 2.4vw, 19px);
  color: var(--cyan);
  letter-spacing: 1.5px;
  text-shadow: 0 0 6px var(--cyan-glow);
  padding: 8px 12px;
  border-left: 2px solid var(--cyan-dim);
  background: linear-gradient(90deg, var(--cyan-glow-soft) 0%, transparent 100%);
}

.step-num {
  color: var(--cyan-bright);
  margin-right: 10px;
  font-weight: bold;
}

.install-step strong {
  color: var(--cyan-bright);
  font-weight: normal;
  text-shadow: 0 0 10px var(--cyan);
}

.ios-share {
  display: inline-block;
  font-size: 1.2em;
  color: var(--cyan-bright);
  vertical-align: middle;
  margin: 0 4px;
}

.install-separator {
  color: var(--cyan-dim);
  font-size: clamp(10px, 1.5vw, 13px);
  margin: 2vh 0;
  letter-spacing: 2px;
}

.continue-btn {
  font-family: var(--font-crt);
  font-size: clamp(12px, 1.8vw, 15px);
  color: var(--cyan-dim);
  background: transparent;
  border: 1px solid var(--cyan-dim);
  padding: 8px 20px;
  cursor: pointer;
  letter-spacing: 2px;
  text-transform: uppercase;
  -webkit-tap-highlight-color: transparent;
  transition: all 0.2s ease;
}

.continue-btn:hover,
.continue-btn:active {
  color: var(--cyan);
  border-color: var(--cyan);
  text-shadow: 0 0 8px var(--cyan-glow);
}

/* ── BOOT SEQUENCE ──────────────────────────────── */

#boot-screen {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: opacity 0.8s ease;
  overflow-y: auto;
  padding: 2vh 4vw;
}

#boot-screen.hidden {
  display: none;
}

#boot-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 30%, rgba(0, 0, 0, 0.8) 100%);
  pointer-events: none;
  z-index: 2;
}

#boot-screen.fade-out {
  opacity: 0;
  pointer-events: none;
}

.boot-content {
  text-align: center;
  max-width: 90vw;
  position: relative;
  z-index: 1;
}

.boot-logo {
  font-family: var(--font-crt);
  font-size: clamp(7px, 1.6vw, 16px);
  line-height: 1;
  color: var(--cyan);
  text-shadow:
    0 0 8px var(--cyan),
    0 0 20px var(--cyan-glow),
    0 0 40px var(--cyan-glow-soft);
  margin-bottom: 1.5vh;
  white-space: pre;
  letter-spacing: 0;
  animation: subtle-flicker 4s infinite;
}

.boot-text {
  font-family: var(--font-crt);
  font-size: clamp(12px, 1.8vw, 18px);
  color: var(--cyan);
  line-height: 1.3;
  margin-bottom: 2vh;
  text-align: left;
  display: inline-block;
  letter-spacing: 1px;
  text-shadow: 0 0 6px var(--cyan-glow);
}

.boot-text div {
  animation: typeIn 0.05s ease forwards;
  opacity: 0;
}

.boot-text div:nth-child(1) { animation-delay: 0.3s; }
.boot-text div:nth-child(2) { animation-delay: 0.7s; }
.boot-text div:nth-child(3) { animation-delay: 1.1s; }
.boot-text div:nth-child(4) { animation-delay: 1.5s; }
.boot-text div:nth-child(5) { animation-delay: 1.9s; }
.boot-text div:nth-child(6) { animation-delay: 2.3s; }

.boot-separator {
  color: var(--cyan-dim);
}

.engage-btn {
  font-family: var(--font-crt);
  font-size: clamp(16px, 2.8vw, 28px);
  color: var(--cyan-bright);
  background: transparent;
  border: 3px solid var(--cyan);
  padding: 12px 36px;
  cursor: pointer;
  letter-spacing: 5px;
  text-transform: uppercase;
  transition: all 0.15s ease;
  animation: pulse-cyan 1.8s ease-in-out infinite;
  -webkit-tap-highlight-color: transparent;
  text-shadow: 0 0 10px var(--cyan), 0 0 30px var(--cyan-glow);
}

.engage-btn:hover,
.engage-btn:active {
  background: var(--cyan);
  color: var(--bg);
  text-shadow: none;
  box-shadow: 0 0 40px var(--cyan), inset 0 0 30px var(--cyan-bright);
}

.engage-bracket {
  color: var(--cyan-dim);
  margin: 0 8px;
}

.boot-hint {
  font-family: var(--font-crt);
  font-size: clamp(10px, 1.4vw, 14px);
  color: var(--cyan-dim);
  margin-top: 1.5vh;
  letter-spacing: 4px;
  animation: flicker 2.5s ease-in-out infinite;
}

/* ── DASHBOARD GRID ─────────────────────────────── */

.dashboard {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 6px;
  padding: 6px;
  padding-top: max(6px, env(safe-area-inset-top));
  padding-left: max(6px, env(safe-area-inset-left));
  padding-right: max(6px, env(safe-area-inset-right));
  padding-bottom: max(6px, env(safe-area-inset-bottom));
  width: 100%;
  height: 100%;
  position: relative;
}

.dashboard.hidden {
  display: none;
}

/* ── PANELS ─────────────────────────────────────── */

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--cyan-dim);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 0 30px rgba(93, 213, 229, 0.05);
}

.panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--cyan-glow-soft) 0%, transparent 30%);
  pointer-events: none;
  opacity: 0.6;
}

/* Corner brackets — like Alien UI */
.panel::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(to right, var(--cyan) 0, var(--cyan) 12px, transparent 12px) top left / 12px 2px no-repeat,
    linear-gradient(to bottom, var(--cyan) 0, var(--cyan) 12px, transparent 12px) top left / 2px 12px no-repeat,
    linear-gradient(to left, var(--cyan) 0, var(--cyan) 12px, transparent 12px) top right / 12px 2px no-repeat,
    linear-gradient(to bottom, var(--cyan) 0, var(--cyan) 12px, transparent 12px) top right / 2px 12px no-repeat,
    linear-gradient(to right, var(--cyan) 0, var(--cyan) 12px, transparent 12px) bottom left / 12px 2px no-repeat,
    linear-gradient(to top, var(--cyan) 0, var(--cyan) 12px, transparent 12px) bottom left / 2px 12px no-repeat,
    linear-gradient(to left, var(--cyan) 0, var(--cyan) 12px, transparent 12px) bottom right / 12px 2px no-repeat,
    linear-gradient(to top, var(--cyan) 0, var(--cyan) 12px, transparent 12px) bottom right / 2px 12px no-repeat;
}

.panel-header {
  font-family: var(--font-crt);
  font-size: clamp(12px, 1.6vw, 16px);
  color: var(--cyan);
  padding: 8px 14px;
  border-bottom: 1px solid var(--cyan-dim);
  letter-spacing: 3px;
  text-shadow: 0 0 8px var(--cyan-glow);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--cyan-glow-soft) 0%, transparent 100%);
}

.panel-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan), 0 0 16px var(--cyan-glow);
  animation: blink 1.5s step-end infinite;
}

.panel-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 4px;
}

.panel-footer {
  font-family: var(--font-crt);
  font-size: clamp(10px, 1.2vw, 13px);
  color: var(--cyan-dim);
  padding: 6px 14px;
  border-top: 1px solid var(--cyan-dim);
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  text-transform: uppercase;
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--dim);
}

.status-dot.active {
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
  animation: blink 2.5s step-end infinite;
}

/* ── SPEED PANEL ────────────────────────────────── */

.speed-display {
  text-align: center;
}

.speed-value {
  font-family: var(--font-crt);
  font-size: clamp(80px, 18vw, 180px);
  font-weight: normal;
  line-height: 0.9;
  color: var(--cyan-bright);
  text-shadow:
    0 0 10px var(--cyan-bright),
    0 0 30px var(--cyan),
    0 0 80px var(--cyan-glow),
    0 0 120px var(--cyan-glow-soft);
  transition: text-shadow 0.1s ease;
  letter-spacing: -2px;
}

.speed-unit {
  display: block;
  font-family: var(--font-crt);
  font-size: clamp(14px, 2.4vw, 22px);
  color: var(--cyan);
  letter-spacing: 10px;
  margin-top: 8px;
  text-shadow: 0 0 6px var(--cyan-glow);
}

.speed-bar-container {
  width: 85%;
  height: 6px;
  background: var(--bg-deep);
  border: 1px solid var(--cyan-dim);
  margin-top: 16px;
  position: relative;
  overflow: hidden;
}

.speed-bar {
  height: 100%;
  width: 0%;
  background: var(--cyan);
  transition: width 0.3s ease;
  box-shadow: 0 0 12px var(--cyan), 0 0 24px var(--cyan-glow);
}

/* ── G-FORCE PANEL ──────────────────────────────── */

.panel-gforce .panel-body {
  padding: 0;
}

#gforce-canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.gforce-overlay {
  position: absolute;
  bottom: 10px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 32px;
  pointer-events: none;
}

.gforce-readout {
  text-align: center;
}

.gforce-label {
  font-family: var(--font-crt);
  font-size: clamp(10px, 1.3vw, 13px);
  color: var(--cyan-dim);
  letter-spacing: 3px;
  display: block;
}

.gforce-val {
  font-family: var(--font-crt);
  font-size: clamp(16px, 2.4vw, 24px);
  color: var(--cyan-bright);
  text-shadow: 0 0 10px var(--cyan);
}

/* ── INFO PANEL ─────────────────────────────────── */

.panel-info-body {
  padding: 10px 14px;
  gap: 8px;
  justify-content: space-evenly !important;
  align-items: stretch !important;
}

.info-block {
  width: 100%;
}

.info-label {
  font-family: var(--font-crt);
  font-size: clamp(10px, 1.3vw, 13px);
  color: var(--cyan-dim);
  letter-spacing: 3px;
  margin-bottom: 2px;
}

.info-value {
  font-family: var(--font-crt);
  font-size: clamp(22px, 4vw, 38px);
  color: var(--cyan-bright);
  text-shadow: 0 0 8px var(--cyan), 0 0 20px var(--cyan-glow);
  line-height: 1;
}

.info-unit {
  font-family: var(--font-crt);
  font-size: clamp(11px, 1.4vw, 15px);
  color: var(--cyan-dim);
  margin-left: 6px;
  letter-spacing: 2px;
}

/* ── AUDIO METER ────────────────────────────────── */

.audio-meter {
  display: flex;
  gap: 3px;
  height: 32px;
  align-items: flex-end;
  margin-top: 6px;
  padding: 2px;
  border: 1px solid var(--cyan-dim);
  background: var(--bg-deep);
}

.audio-bar {
  flex: 1;
  min-width: 4px;
  background: var(--cyan);
  height: 8%;
  transition: height 0.08s ease;
  box-shadow: 0 0 6px var(--cyan-glow);
}

.audio-bar.hot {
  background: var(--cyan-bright);
  box-shadow: 0 0 10px var(--cyan), 0 0 16px var(--cyan-glow);
}

.audio-bar.danger {
  background: var(--danger);
  box-shadow: 0 0 10px var(--danger), 0 0 20px var(--danger-glow);
}

/* ── SCANLINES (heavy CRT) ──────────────────────── */

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.25) 0px,
    rgba(0, 0, 0, 0.25) 1px,
    transparent 1px,
    transparent 3px
  );
  animation: scanline-move 4s linear infinite;
}

.scanlines::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    0deg,
    transparent 0%,
    rgba(93, 213, 229, 0.04) 50%,
    transparent 100%
  );
  background-size: 100% 6px;
  animation: scanline-sweep 8s linear infinite;
}

.scanlines::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at center,
    transparent 50%,
    rgba(0, 0, 0, 0.6) 100%
  );
}

/* ── CRT CURVATURE + VIGNETTE ───────────────────── */

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 99;
  background: radial-gradient(
    ellipse at center,
    transparent 40%,
    rgba(0, 4, 8, 0.4) 80%,
    rgba(0, 4, 8, 0.9) 100%
  );
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 201;
  box-shadow:
    inset 0 0 120px rgba(0, 0, 0, 0.7),
    inset 0 0 240px rgba(0, 0, 0, 0.4);
}

/* ── ANIMATIONS ─────────────────────────────────── */

@keyframes typeIn {
  to { opacity: 1; }
}

@keyframes pulse-cyan {
  0%, 100% {
    border-color: var(--cyan-dim);
    box-shadow: 0 0 0 var(--cyan-glow);
  }
  50% {
    border-color: var(--cyan);
    box-shadow: 0 0 30px var(--cyan-glow), inset 0 0 20px var(--cyan-glow-soft);
  }
}

@keyframes flicker {
  0%, 100% { opacity: 0.7; }
  45% { opacity: 1; }
  50% { opacity: 0.3; }
  55% { opacity: 1; }
}

@keyframes subtle-flicker {
  0%, 100% { opacity: 1; }
  4% { opacity: 0.9; }
  5% { opacity: 1; }
  6% { opacity: 0.85; }
  7% { opacity: 1; }
  40% { opacity: 1; }
  41% { opacity: 0.75; }
  42% { opacity: 1; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

@keyframes scanline-move {
  0% { background-position: 0 0; }
  100% { background-position: 0 6px; }
}

@keyframes scanline-sweep {
  0% { background-position: 0 -100vh; }
  100% { background-position: 0 100vh; }
}

@keyframes glitch {
  0%, 100% { transform: translate(0); filter: none; }
  10% { transform: translate(-3px, 1px); filter: hue-rotate(15deg) saturate(2); }
  20% { transform: translate(3px, -1px); }
  30% { transform: translate(-1px, 2px); filter: hue-rotate(-15deg); }
  40% { transform: translate(1px, -2px); }
  50% { transform: translate(-2px, 1px); filter: contrast(1.5); }
  60% { transform: translate(2px, 1px); }
  70% { transform: translate(0, -1px); }
}

@keyframes chromatic {
  0%, 100% { text-shadow: 0 0 10px var(--cyan); }
  25% { text-shadow: -2px 0 0 var(--danger), 2px 0 0 var(--cyan-bright), 0 0 10px var(--cyan); }
  75% { text-shadow: 2px 0 0 var(--danger), -2px 0 0 var(--cyan-bright), 0 0 10px var(--cyan); }
}

/* ── LONG-PRESS RESET ───────────────────────────── */

.reset-hint {
  margin-left: auto;
  font-size: 0.7em;
  color: var(--cyan-dim);
  letter-spacing: 1.5px;
  opacity: 0.6;
}

.reset-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 5px;
  width: 0%;
  background: var(--cyan-bright);
  box-shadow: 0 0 16px var(--cyan), 0 0 32px var(--cyan-glow), 0 0 50px var(--cyan-glow);
  z-index: 10;
  pointer-events: none;
  transition: none;
}

.reset-progress.active {
  transition: width 1.4s linear;
  width: 100%;
}

.panel-info.resetting {
  animation: reset-flash 0.4s ease;
}

@keyframes reset-flash {
  0%, 100% { background: var(--bg-panel); }
  50% { background: var(--cyan-deep); box-shadow: 0 0 40px var(--cyan-glow); }
}

/* ── VERSION BADGE (in right panel footer) ──────── */

.panel-footer-version {
  justify-content: flex-start;
  gap: 6px;
}

.panel-footer-version .version-text {
  margin-left: auto;
  color: var(--cyan-bright);
  text-shadow: 0 0 6px var(--cyan), 0 0 12px var(--cyan-glow);
  letter-spacing: 1px;
  font-size: 1em;
  background: var(--cyan-glow-soft);
  padding: 0 6px;
  border: 1px solid var(--cyan-dim);
}

/* ── REACTIVE CLASSES ───────────────────────────── */

.glitch-active {
  animation: glitch 0.2s ease, chromatic 0.2s ease;
}