/* ═══════════════════════════════════════════════════════════
   KESSLERACT — Cold War Mission Control aesthetic
   Phosphor amber CRT · Angular panels · Monospace readouts
   ═══════════════════════════════════════════════════════════ */

:root {
  color-scheme: dark;
  --app-height: 100vh;
  --app-width: 100vw;
  --mobile-hud-bottom: 2px;
  --mobile-landscape-scene-offset-x: 0px;
  --mobile-landscape-scene-offset-y: 0px;
  --mobile-hud-size: 52px;
  --bg:           #040300;
  --panel:        rgba(9, 7, 0, 0.97);
  --panel-border: rgba(195, 138, 12, 0.30);
  --text:         #c09030;
  --muted:        #4e3a0d;
  --accent:       #e8a000;
  --accent-2:     #00e87a;
  --danger:       #ff3300;
  --success:      #00e87a;
  --shadow:       rgba(0, 0, 0, 0.80);
  --glow:         0 0 10px rgba(232, 160, 0, 0.65), 0 0 32px rgba(232, 160, 0, 0.22);
  --glow-sm:      0 0 6px rgba(232, 160, 0, 0.48);
  --glow-green:   0 0 7px rgba(0, 232, 122, 0.60);
  --grid:         rgba(195, 138, 12, 0.042);
}

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

html,
body {
  min-height: 100vh;
  min-height: 100svh;
  font-family: 'Courier Prime', 'Courier New', monospace;
  font-size: 15px;
  color: var(--text);
  overflow-x: hidden;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    radial-gradient(ellipse at 50% 0%, rgba(70, 35, 0, 0.55), transparent 52%),
    radial-gradient(ellipse at 50% 100%, rgba(0, 18, 6, 0.30), transparent 45%);
  background-size: 48px 48px, 48px 48px, 100% 100%, 100% 100%;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0, 0, 0, 0.10) 3px,
    rgba(0, 0, 0, 0.10) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.70) 100%);
  pointer-events: none;
  z-index: 9998;
}

.start-screen {
  position: fixed;
  inset: 0;
  z-index: 9997;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(circle at 50% 35%, rgba(70, 35, 0, 0.36), rgba(3, 2, 0, 0.95) 65%),
    rgba(2, 1, 0, 0.92);
}

.start-screen[hidden] {
  display: none;
}

.start-screen-panel {
  width: min(760px, 100%);
  padding: 30px 28px 26px;
  text-align: center;
  background: rgba(9, 7, 0, 0.96);
  border: 1px solid rgba(232, 160, 0, 0.28);
  box-shadow:
    0 0 0 1px rgba(232, 160, 0, 0.05),
    inset 0 0 28px rgba(232, 160, 0, 0.022),
    0 24px 64px rgba(0, 0, 0, 0.80);
}

.start-screen-lede {
  max-width: 38rem;
  margin: 0 auto 22px;
  line-height: 1.6;
  color: #9a7930;
}

.start-button {
  width: 168px;
  height: 168px;
  min-width: 168px;
  min-height: 168px;
  margin: 8px auto 24px;
  border-radius: 999px;
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  box-shadow: var(--glow), 0 0 36px rgba(232, 160, 0, 0.28);
}

.start-briefing {
  margin: 0 auto;
  padding: 18px 20px;
  text-align: left;
  background: rgba(232, 160, 0, 0.048);
  border: 1px solid rgba(232, 160, 0, 0.18);
  border-left: 3px solid var(--accent);
}

.start-instructions {
  margin: 12px 0 0 1.2rem;
  display: grid;
  gap: 10px;
  color: #b48a33;
  line-height: 1.55;
}

.start-links {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.start-links a {
  color: var(--accent-2);
  text-decoration: none;
  font-family: 'Share Tech Mono', monospace;
  letter-spacing: 0.08em;
  border-bottom: 1px solid rgba(0, 232, 122, 0.28);
}

.start-links a:hover {
  color: #7cffbc;
  border-bottom-color: #7cffbc;
}

.layout {
  width: min(1720px, calc(100vw - 24px));
  margin: 12px auto;
  display: grid;
  grid-template-columns: 308px 1fr;
  gap: 12px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 0;
  position: relative;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(232, 160, 0, 0.05),
    inset 0 0 28px rgba(232, 160, 0, 0.022),
    0 24px 64px var(--shadow);
}

.panel::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(232,160,0,0.25) 60%, transparent 100%);
  z-index: 2;
}

.panel::after {
  content: '';
  position: absolute;
  bottom: -1px; right: -1px;
  width: 0; height: 0;
  border-style: solid;
  border-width: 0 0 20px 20px;
  border-color: transparent transparent var(--panel-border) transparent;
  z-index: 2;
}

.intro {
  padding: 22px 20px 20px;
}

.eyebrow {
  display: block;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2px;
}

.label {
  display: block;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.60rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 {
  margin: 8px 0 14px;
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: clamp(2.0rem, 5.2vw, 3.3rem);
  line-height: 0.90;
  color: var(--accent);
  text-shadow: var(--glow);
  letter-spacing: 0.07em;
}

.lede {
  margin: 0 0 18px;
  line-height: 1.56;
  color: #7a5e20;
  font-size: 0.87rem;
}

.mission-card {
  margin-bottom: 18px;
  padding: 13px 14px;
  background: rgba(232, 160, 0, 0.048);
  border: 1px solid rgba(232, 160, 0, 0.20);
  border-left: 3px solid var(--accent);
}

.mission-card strong {
  display: block;
  margin-top: 7px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.88rem;
  color: var(--accent);
  line-height: 1.35;
}

.mission-card p {
  margin: 9px 0 0;
  color: #7a5e20;
  line-height: 1.52;
  font-size: 0.83rem;
}

.soundtrack-card {
  margin-top: 12px;
}

.soundtrack-card strong {
  color: var(--accent-2);
  text-shadow: var(--glow-green);
}

.controls-grid {
  display: grid;
  gap: 12px;
}

.slider-block {
  display: grid;
  gap: 9px;
  padding: 13px 14px;
  background: rgba(232, 160, 0, 0.030);
  border: 1px solid rgba(232, 160, 0, 0.16);
  border-left: 2px solid rgba(232, 160, 0, 0.32);
}

.slider-block span:first-child {
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.slider-block span:last-child {
  font-family: 'Share Tech Mono', monospace;
  color: var(--accent);
  font-size: 0.87rem;
  text-shadow: var(--glow-sm);
  text-align: right;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  height: 3px;
  cursor: pointer;
}

.buttons {
  display: flex;
  gap: 8px;
  align-items: stretch;
  flex-wrap: wrap;
}

button {
  border: 1px solid var(--accent);
  border-radius: 0;
  padding: 10px 16px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.69rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: #020100;
  background: var(--accent);
  cursor: pointer;
  min-width: 100px;
  text-align: center;
  white-space: nowrap;
  min-height: 44px;
  box-shadow: var(--glow-sm), inset 0 1px 0 rgba(255, 215, 70, 0.30);
  transition: background 0.08s, box-shadow 0.08s, transform 0.05s;
  position: relative;
}

button:hover {
  background: #ffc030;
  box-shadow: var(--glow), 0 0 24px rgba(232, 160, 0, 0.38);
}

button:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 6px rgba(0,0,0,0.45);
}

.wide-button {
  width: 100%;
}

button.secondary {
  color: var(--accent);
  background: transparent;
  border-color: rgba(232, 160, 0, 0.34);
  box-shadow: none;
}

button.secondary:hover {
  background: rgba(232, 160, 0, 0.095);
  border-color: var(--accent);
  box-shadow: var(--glow-sm);
}

button:disabled {
  opacity: 0.25;
  cursor: not-allowed;
  transform: none;
}

.tips-drawer {
  margin-top: 16px;
  background: rgba(232, 160, 0, 0.022);
  border: 1px solid rgba(232, 160, 0, 0.14);
  overflow: hidden;
}

.tips-drawer summary {
  padding: 11px 14px;
  cursor: pointer;
  list-style: none;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.66rem;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.1s;
}

.tips-drawer summary::before {
  content: '▸  ';
}

.tips-drawer[open] summary::before {
  content: '▾  ';
  color: var(--accent);
}

.tips-drawer summary::-webkit-details-marker { display: none; }

.tips-drawer[open] summary {
  border-bottom: 1px solid rgba(232, 160, 0, 0.12);
  color: var(--accent);
}

.tips {
  margin: 0;
  padding: 12px 14px 14px 26px;
  color: #7a5e20;
  line-height: 1.68;
  font-size: 0.83rem;
}

.hud-panel {
  padding: 12px;
}

.orientation-hint {
  display: none;
  margin-bottom: 10px;
  padding: 9px 12px;
  color: var(--accent);
  background: rgba(232, 160, 0, 0.07);
  border: 1px solid rgba(232, 160, 0, 0.22);
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.70rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hud {
  display: grid;
  grid-template-columns: 1.4fr repeat(5, minmax(0, 1fr));
  grid-auto-rows: minmax(66px, auto);
  gap: 8px;
  margin-bottom: 10px;
}

.hud > div {
  padding: 10px 12px;
  background: rgba(232, 160, 0, 0.038);
  border: 1px solid rgba(232, 160, 0, 0.16);
  border-left: 2px solid rgba(232, 160, 0, 0.30);
  position: relative;
}

.hud > div::after {
  content: '';
  position: absolute;
  bottom: 0; right: 0;
  width: 0; height: 0;
  border-style: solid;
  border-width: 0 0 9px 9px;
  border-color: transparent transparent rgba(232, 160, 0, 0.20) transparent;
}

.hud strong {
  display: block;
  margin-top: 5px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 1.1rem;
  min-height: 1.5em;
  white-space: nowrap;
  color: var(--accent-2);
  text-shadow: var(--glow-green);
  letter-spacing: 0.04em;
}

.hud-sector strong {
  font-size: 0.80rem;
  color: var(--accent);
  text-shadow: var(--glow-sm);
  white-space: normal;
  line-height: 1.35;
}

.game-viewport {
  position: relative;
}

canvas {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  max-height: min(78vh, 980px);
  max-height: min(78svh, 980px);
  display: block;
  border-radius: 0;
  border: 1px solid rgba(232, 160, 0, 0.20);
  box-shadow:
    inset 0 0 0 1px rgba(232, 160, 0, 0.04),
    0 0 28px rgba(232, 160, 0, 0.06);
  background:
    radial-gradient(circle at 50% 48%, rgba(45, 22, 0, 0.22), rgba(3, 2, 0, 0.99) 68%),
    #030100;
  touch-action: manipulation;
}

.mobile-top-strip,
.mobile-angle-control,
.mobile-corner-button,
.mobile-landscape-hud {
  display: none;
}

@media (max-width: 1024px) {
  .layout {
    grid-template-columns: 1fr;
    width: min(100vw - 16px, 1280px);
  }

  .hud-panel { order: 1; }
  .intro      { order: 2; }

  .hud { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .hud-sector { grid-column: 1 / -1; }

  .buttons {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .layout {
    width: min(100vw - 16px, 1280px);
    margin: 8px auto 16px;
  }

  .intro,
  .hud-panel { padding: 12px; }

  .hud { grid-template-columns: repeat(3, minmax(0, 1fr)); }

  .hud-primary  { order: 1; }
  .hud-secondary { order: 2; }

  .hud-sector,
  .hud-status { grid-column: span 3; }

  .buttons { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  button { padding: 12px 14px; }

  .tips-drawer { margin-top: 12px; }

  canvas { max-height: 62svh; }

  .start-screen {
    padding: 12px;
  }

  .start-screen-panel {
    padding: 20px 16px 18px;
  }

  .start-button {
    width: 136px;
    height: 136px;
    min-width: 136px;
    min-height: 136px;
    margin-bottom: 18px;
  }

  .start-instructions {
    gap: 8px;
    font-size: 0.95rem;
  }
}

@media ((max-width: 720px) and (orientation: portrait)), ((pointer: coarse) and (orientation: portrait)) {
  .orientation-hint { display: block; }

  .hud { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .hud-sector,
  .hud-status { grid-column: span 2; }

  .hud-secondary { font-size: 0.88rem; }

  canvas { max-height: 44svh; }

  .buttons { grid-template-columns: 1fr; }

  .tips-drawer:not([open]) { margin-bottom: 0; }
}

@media ((max-width: 960px) and (orientation: landscape)), ((pointer: coarse) and (orientation: landscape)) {
  body { overflow: hidden; }

  .layout {
    width: 100vw;
    margin: 0;
    gap: 0;
  }

  .intro { display: none; }

  .hud-panel {
    padding: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    backdrop-filter: none;
    background: #030100;
    min-height: var(--app-height);
  }

  .hud-panel::before,
  .hud-panel::after { display: none; }

  .hud-panel > .hud,
  .orientation-hint,
  .mobile-top-strip { display: none !important; }

  .game-viewport {
    position: relative;
    height: var(--app-height);
    width: var(--app-width);
    overflow: hidden;
    background:
      radial-gradient(circle at 50% 50%, rgba(45, 22, 0, 0.18), rgba(3, 2, 0, 1) 70%),
      #030100;
  }

  .mobile-landscape-hud {
    position: fixed;
    inset: 0;
    z-index: 30;
    display: block;
    pointer-events: none;
  }

  .mobile-landscape-topbar {
    position: fixed;
    top: max(8px, env(safe-area-inset-top));
    left: max(10px, env(safe-area-inset-left));
    right: max(10px, env(safe-area-inset-right));
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: flex-start;
    pointer-events: none;
  }

  .mobile-landscape-inline {
    display: inline-flex;
    align-items: baseline;
    gap: 4px;
    padding: 0;
    margin: 0;
    min-width: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
    color: var(--accent);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.92rem;
    line-height: 1;
    white-space: nowrap;
    pointer-events: none;
  }

  .mobile-landscape-inline strong {
    color: var(--accent);
    font-size: 0.92rem;
    line-height: 1;
    white-space: nowrap;
  }

  .mobile-landscape-controls {
    position: fixed;
    left: max(6px, env(safe-area-inset-left));
    right: max(6px, env(safe-area-inset-right));
    bottom: max(env(safe-area-inset-bottom), var(--mobile-hud-bottom, 2px));
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 6px;
    pointer-events: none;
  }

  .mobile-angle-stepper,
  .mobile-landscape-actions {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    pointer-events: auto;
  }

  .mobile-angle-value {
    min-width: 2.8em;
    text-align: center;
    font-family: 'Share Tech Mono', monospace;
    font-size: 1rem;
    color: var(--accent);
    text-shadow: var(--glow-sm);
  }

  .mobile-hud-action {
    min-width: 0;
    width: var(--mobile-hud-size);
    height: var(--mobile-hud-size);
    min-height: var(--mobile-hud-size);
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    line-height: 1;
    letter-spacing: 0;
    text-transform: none;
    pointer-events: auto;
    touch-action: manipulation;
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.30), var(--glow-sm), inset 0 1px 0 rgba(255, 215, 70, 0.30);
  }

  .mobile-hud-action.secondary {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.24);
  }

  canvas {
    position: absolute;
    left: 50%;
    top: 50%;
    width: min(calc(var(--app-width) * 0.95), calc((var(--app-height) + 72px) * 1.6));
    height: auto;
    max-width: none;
    max-height: none;
    border: 0;
    box-shadow: none;
    object-fit: contain;
    transform:
      translate(-50%, -50%)
      translate(var(--mobile-landscape-scene-offset-x, 0px), var(--mobile-landscape-scene-offset-y, 0px));
  }

  .start-screen {
    padding: max(10px, env(safe-area-inset-top)) max(10px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));
  }

  .start-screen-panel {
    max-height: 100%;
    overflow: auto;
    padding: 18px 16px 16px;
  }
}

@media (max-width: 1100px), (pointer: coarse) {
  .hud {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .hud-secondary,
  .hud .hud-primary:nth-of-type(5),
  .hud-status {
    display: none;
  }

  .mobile-top-strip {
    display: flex;
    gap: 6px;
    padding: 6px 8px;
  }

  .mobile-readout {
    min-width: 0;
    flex: 1 1 0;
  }

  .mobile-readout .label {
    font-size: 0.52rem;
    letter-spacing: 0.14em;
  }

  .mobile-readout strong {
    font-size: 0.76rem;
    line-height: 1.1;
  }

  .mobile-landscape-hud {
    padding: 6px 8px;
    gap: 6px;
  }

  .mobile-landscape-topbar {
    gap: 6px;
  }

  .mobile-landscape-actions {
    gap: 6px;
  }
}