:root {
  --bg: #050705;
  --green: #33ff66;
  --green-dim: #17a848;
  --amber: #ffcc33;
  --cyan: #50e6ff;
  --red: #ff4d4d;
  --panel: rgba(0, 22, 8, 0.82);
  --line: rgba(51, 255, 102, 0.42);
  --shadow: rgba(51, 255, 102, 0.25);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bot: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  overscroll-behavior: none;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  background:
    radial-gradient(circle at center, rgba(0, 80, 25, 0.35), transparent 52%),
    linear-gradient(180deg, #071007, #020302 72%);
  color: var(--green);
  font-family: "Courier New", "Lucida Console", Consolas, monospace;
  overflow-x: hidden;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bot);
}

/* CRT scanlines */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.035) 0,
    rgba(255,255,255,0.035) 1px,
    transparent 2px,
    transparent 4px
  );
  mix-blend-mode: screen;
  opacity: 0.45;
  z-index: 10;
}

/* CRT vignette */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at center, transparent 50%, rgba(0,0,0,0.58) 100%);
  z-index: 11;
}

/* Boot splash */
#boot-splash {
  position: fixed;
  inset: 0;
  background: #020302;
  z-index: 50;
  padding: max(20px, var(--safe-top)) 18px 20px;
  color: var(--green-dim);
  font-family: "Courier New", monospace;
  font-size: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
  transition: opacity 600ms ease;
}
#boot-splash.done { opacity: 0; pointer-events: none; }

.wrap {
  width: min(1060px, 100%);
  margin: 0 auto;
  padding: 14px 12px 28px;
  position: relative;
  z-index: 1;
}

.terminal {
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: 0 0 28px var(--shadow), inset 0 0 24px rgba(51, 255, 102, 0.08);
  border-radius: 10px;
  overflow: hidden;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(51, 255, 102, 0.08);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 12px;
}
.topbar-title { flex: 1; text-align: center; }
.topbar-meta { white-space: nowrap; }
.ready {
  color: var(--green);
  animation: blink 1.4s steps(1) infinite;
}

.lights { display: flex; gap: 6px; flex-shrink: 0; }
.light {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
}
.light:nth-child(2) { background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.light:nth-child(3) { background: var(--red); box-shadow: 0 0 8px var(--red); }

.screen { padding: 18px 14px; }

.logo {
  color: var(--cyan);
  text-shadow: 0 0 14px rgba(80, 230, 255, 0.55);
  font-size: clamp(8px, 2.2vw, 16px);
  line-height: 1.05;
  white-space: pre;
  overflow-x: auto;
  margin: 4px 0 16px;
  -webkit-overflow-scrolling: touch;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  font-size: clamp(28px, 8vw, 56px);
  color: var(--green);
  text-shadow: 0 0 18px var(--shadow);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

h2 {
  color: var(--amber);
  font-size: 16px;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 8px;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

p, li { line-height: 1.55; font-size: 15px; }

.intro { font-size: 14px; }

.amber { color: var(--amber); }
.cyan  { color: var(--cyan); }

.cursor {
  display: inline-block;
  width: 10px;
  height: 1.05em;
  background: var(--green);
  margin-left: 4px;
  vertical-align: -2px;
  animation: blink 0.9s steps(1) infinite;
  box-shadow: 0 0 8px var(--green);
}
@keyframes blink { 50% { opacity: 0; } }

.status {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin: 14px 0 10px;
}
.status > div {
  border: 1px solid var(--line);
  padding: 8px 10px;
  background: rgba(0,0,0,0.25);
  font-size: 13px;
}
.label {
  color: var(--amber);
  display: block;
  font-size: 10px;
  margin-bottom: 4px;
  letter-spacing: 0.08em;
}
.retired { color: var(--amber); font-weight: bold; }
.sysop-line { margin: 6px 0 16px; }

/* Tab nav */
.tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 5px;
  margin: 0 0 14px;
  position: sticky;
  top: 0;
  background: var(--panel);
  padding: 6px 0;
  z-index: 5;
  border-bottom: 1px dashed var(--line);
}
.tab {
  background: rgba(0,0,0,0.35);
  color: var(--green-dim);
  border: 1px solid var(--line);
  font-family: inherit;
  font-size: 11px;
  padding: 10px 2px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.tab.active {
  background: var(--green);
  color: var(--bg);
  box-shadow: 0 0 10px var(--shadow);
  font-weight: bold;
}
.tab:focus-visible { outline: 2px dashed var(--amber); outline-offset: 2px; }

.panel { display: none; }
.panel.active { display: block; animation: fade 0.25s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.box {
  border: 1px solid var(--line);
  padding: 14px;
  background: rgba(0,0,0,0.28);
  box-shadow: inset 0 0 18px rgba(51, 255, 102, 0.05);
  margin-bottom: 14px;
}

.notice {
  border: 1px dashed var(--amber);
  color: var(--amber);
  padding: 10px 12px;
  margin-top: 12px;
  background: rgba(255, 204, 51, 0.08);
  font-size: 13px;
}

.menu { list-style: none; padding: 0; margin: 0; }
.menu li {
  padding: 9px 0;
  border-bottom: 1px dotted rgba(51, 255, 102, 0.24);
  font-size: 14px;
}
.menu b { color: var(--cyan); display: inline-block; min-width: 1.4em; }

.ascii-pickleball {
  color: var(--green);
  white-space: pre;
  font-size: clamp(9px, 2.6vw, 13px);
  overflow-x: auto;
  line-height: 1.2;
  margin: 0 0 14px;
  text-shadow: 0 0 8px rgba(51, 255, 102, 0.4);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.btn {
  color: var(--bg);
  background: var(--green);
  text-decoration: none;
  padding: 12px 16px;
  font-family: inherit;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 13px;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 12px var(--shadow);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.btn.secondary {
  background: transparent;
  color: var(--green);
  border: 1px solid var(--line);
  box-shadow: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn:active { transform: translateY(1px); }

.tiny { font-size: 12px; color: var(--green-dim); }

.footer {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--green-dim);
  font-size: 11px;
}

/* === Guestbook === */
.gb-form { margin-bottom: 14px; }
.gb-label {
  display: block;
  margin-bottom: 10px;
  font-size: 11px;
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.gb-label input,
.gb-label textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  background: rgba(0,0,0,0.55);
  border: 1px solid var(--line);
  color: var(--green);
  font-family: inherit;
  font-size: 14px;
  padding: 10px;
  border-radius: 2px;
  -webkit-appearance: none;
  appearance: none;
}
.gb-label input:focus,
.gb-label textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 8px var(--shadow);
}
.gb-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
#gb-status { min-height: 1.2em; }
#gb-status.ok { color: var(--green); }
#gb-status.err { color: var(--red); }

.gb-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 60vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}
.gb-entry {
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.35);
  padding: 8px 10px;
}
.gb-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 11px;
  color: var(--cyan);
  margin-bottom: 4px;
}
.gb-head .ts { color: var(--green-dim); }
.gb-body { font-size: 13px; line-height: 1.4; white-space: pre-wrap; word-break: break-word; }
.gb-loading, .gb-empty { padding: 8px 0; }

/* === Game === */
.game-wrap {
  border: 1px solid var(--line);
  background: #010301;
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  box-shadow: inset 0 0 12px rgba(51, 255, 102, 0.12);
}
#game {
  width: 100%;
  max-width: 360px;
  height: auto;
  aspect-ratio: 320 / 420;
  display: block;
  background: #020302;
  border: 1px solid var(--line);
  image-rendering: pixelated;
  touch-action: none;
}
.game-hud {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  max-width: 360px;
  text-align: center;
}
.game-hud > div {
  border: 1px solid var(--line);
  padding: 6px;
  background: rgba(0,0,0,0.4);
  font-size: 14px;
}
.game-controls {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 8px;
  width: 100%;
  max-width: 360px;
}
.pad {
  font-family: inherit;
  font-size: 22px;
  background: rgba(51,255,102,0.1);
  color: var(--green);
  border: 1px solid var(--line);
  padding: 14px 0;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.pad:active { background: var(--green); color: var(--bg); }
.pad-go { font-size: 14px; font-weight: bold; letter-spacing: 0.1em; }

/* === Tablet and up === */
@media (min-width: 720px) {
  .wrap { padding: 28px 20px; }
  .screen { padding: 24px; }
  .status { grid-template-columns: repeat(4, 1fr); }
  .tabs { grid-template-columns: repeat(5, max-content); gap: 8px; }
  .tab { padding: 10px 16px; font-size: 13px; }
  h1 { font-size: clamp(36px, 5vw, 58px); }
  .intro, p, li { font-size: 15px; }
  .game-controls { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}