/* ════════════════════════════════════════════════════════════
   Pong.az — neon dark theme
   Tək CSS faylı · mobile-first responsive · arcade game-feel
   ══════════════════════════════════════════════════════════ */

/* — Reset — */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
button { font: inherit; color: inherit; cursor: pointer; }
dialog { border: 0; padding: 0; background: transparent; }
:focus-visible { outline: 2px solid #00FFFF; outline-offset: 2px; }
svg { display: block; }

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  padding: 2px 8px;
  background: rgba(0, 255, 255, 0.08);
  border: 1px solid rgba(0, 255, 255, 0.4);
  border-radius: 4px;
  font-family: "JetBrains Mono", "Consolas", monospace;
  font-size: 11px;
  font-weight: 700;
  color: #00FFFF;
  text-shadow: 0 0 6px rgba(0, 255, 255, 0.6);
  box-shadow: 0 2px 0 rgba(0, 255, 255, 0.15);
}

/* — Tokens — */
:root {
  --x-color: #00FFFF;
  --o-color: #FF00AA;
  --ball: #FFFFFF;
  --bg: #000000;
  --bg-card: #08080F;
  --bg-elev: #11111E;
  --bg-overlay: #1A1A2D;
  --border: #1F1F38;
  --text: #F4F4FA;
  --text-muted: #8888A4;
  --text-dim: #4A4A66;
  --accent: #00FFFF;
  --accent-2: #FF00AA;
  --warn: #FACC15;
  --success: #84CC16;
  --danger: #F43F5E;
  --t-fast: 120ms;
  --t-base: 220ms;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  --font-display: "Orbitron", "Inter", system-ui, sans-serif;
  --font-ui: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Consolas", monospace;
}

/* — Body və global fon —
   Canvas tam ekran istifadə edir; topbar, skor və kredit
   canvas-ın üzərinə overlay olur (ayrı sətir tutmurlar). */
body {
  font-family: var(--font-ui);
  background: #000;
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
}

body::before {
  /* Arxa fonda subtl qradient toplama */
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 0% 0%, rgba(0, 255, 255, 0.07), transparent 45%),
    radial-gradient(ellipse at 100% 100%, rgba(255, 0, 170, 0.07), transparent 45%);
  pointer-events: none;
}

/* Vignette overlay (qaranlığ kənarlar) */
.fx-vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at center, transparent 30%, rgba(0, 0, 0, 0.6) 100%);
}

/* CRT scanline overlay */
.fx-scanlines {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.08;
  background-image: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 2px,
    rgba(255, 255, 255, 0.5) 2px,
    rgba(255, 255, 255, 0.5) 3px
  );
  mix-blend-mode: overlay;
}

/* Stage tam viewport-u tutur; topbar/skor/credit overlay olunur */
.stage {
  position: fixed;
  inset: 0;
  z-index: 1;
}

.topbar, .scoreboard, .credit {
  z-index: 4;
}

/* — Topbar (overlay) — */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent);
  pointer-events: none;
}
.topbar > * { pointer-events: auto; }

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand__bar {
  width: 4px;
  height: 24px;
  border-radius: 2px;
  animation: barPulse 2.4s ease-in-out infinite;
}
.brand__bar--left  { background: var(--x-color); box-shadow: 0 0 14px var(--x-color); }
.brand__bar--right { background: var(--o-color); box-shadow: 0 0 14px var(--o-color); animation-delay: 1.2s; }

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 2px;
  background: linear-gradient(120deg, var(--x-color), #FFFFFF, var(--o-color));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  text-shadow: 0 0 30px rgba(0, 255, 255, 0.3);
}

.brand__dot {
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
  font-weight: 900;
}

.topbar__actions { display: flex; gap: 6px; }

.icon-btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  transition: background var(--t-base), color var(--t-base), border-color var(--t-base), transform var(--t-fast);
}

.icon-btn:hover {
  background: var(--bg-elev);
  color: var(--accent);
  border-color: rgba(0, 255, 255, 0.25);
  transform: translateY(-1px);
}

/* — Scoreboard (overlay) — */
.scoreboard {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  padding: 4px 22px;
  pointer-events: none;
}
.scoreboard > * { pointer-events: auto; }

.score {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.score--left .score__name { order: 1; }
.score--left .score__value { order: 2; }

.score__name {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.18em;
}

.score__value {
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  min-width: 56px;
  text-align: center;
  transition: transform var(--t-base) var(--ease), color var(--t-base);
  line-height: 1;
}

.score--left .score__value  { color: var(--x-color); text-shadow: 0 0 20px rgba(0, 255, 255, 0.65), 0 0 40px rgba(0, 255, 255, 0.3); }
.score--right .score__value { color: var(--o-color); text-shadow: 0 0 20px rgba(255, 0, 170, 0.65), 0 0 40px rgba(255, 0, 170, 0.3); }

.score__value--bump { animation: scoreBump 420ms var(--ease); }

.score__sep {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  padding: 0 4px;
}

/* — Stage və canvas — */
.stage {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#canvas {
  width: 100%;
  height: 100%;
  display: block;
  background: #000;
}

/* — Overlay — */
.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at center, rgba(8, 8, 15, 0.85), rgba(0, 0, 0, 0.96));
  backdrop-filter: blur(8px);
  z-index: 4;
  transition: opacity var(--t-base);
}

.overlay--hidden { opacity: 0; pointer-events: none; }

.overlay__inner {
  text-align: center;
  padding: 32px 36px;
  max-width: 520px;
  width: 100%;
  animation: overlayIn 480ms var(--ease) both;
}

.overlay__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 6px;
}

.overlay__bar {
  width: 6px;
  height: 56px;
  border-radius: 3px;
}
.overlay__bar--left  { background: var(--x-color); box-shadow: 0 0 24px var(--x-color); }
.overlay__bar--right { background: var(--o-color); box-shadow: 0 0 24px var(--o-color); }

.overlay__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 64px;
  letter-spacing: 3px;
  background: linear-gradient(120deg, var(--x-color), #FFFFFF, var(--o-color));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  line-height: 1;
}

.overlay__title-dot {
  color: var(--accent);
  -webkit-text-fill-color: var(--accent);
}

.overlay__sub {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.4em;
  margin-bottom: 36px;
  margin-top: 14px;
}

.overlay__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 36px;
}

.overlay__hints {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

.hint-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.hint-key {
  display: inline-flex;
  gap: 4px;
}

.hint-or {
  color: var(--text-dim);
  font-size: 11px;
}

.hint-text {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.hint-icon { font-size: 14px; }
.hint-row--mobile { display: none; }
@media (hover: none) {
  .hint-row:not(.hint-row--mobile) { display: none; }
  .hint-row--mobile { display: flex; }
}

/* — Düymələr — */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 8px;
  border: 0;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition: transform var(--t-fast), box-shadow var(--t-base), background var(--t-base);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(120deg, var(--x-color), var(--o-color));
  color: #000;
  box-shadow: 0 8px 28px rgba(0, 255, 255, 0.35), 0 0 24px rgba(255, 0, 170, 0.2);
  text-shadow: none;
}
.btn-primary:hover { box-shadow: 0 12px 36px rgba(255, 0, 170, 0.45), 0 0 32px rgba(0, 255, 255, 0.3); }

.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--bg-elev);
  color: var(--text);
  border-color: rgba(0, 255, 255, 0.3);
}

/* — Touchpads — */
.touchpad {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50%;
  z-index: 2;
  background: transparent;
  touch-action: none;
}
.touchpad--left { left: 0; }
.touchpad--right { right: 0; }

/* — Modal — */
.modal {
  margin: auto;
  width: min(560px, 96vw);
  max-height: 92vh;
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
}

.modal__inner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  max-height: 92vh;
  overflow: hidden;
  animation: overlayIn 380ms var(--ease);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7), 0 0 80px rgba(0, 255, 255, 0.05);
}

.modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.modal__head h2 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.modal__body {
  padding: 22px 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.modal__foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 18px 24px;
  border-top: 1px solid var(--border);
}

.field { border: 0; display: flex; flex-direction: column; gap: 10px; }
.field legend {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

/* Card-pick */
.card-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.card-pick { cursor: pointer; }
.card-pick input { position: absolute; opacity: 0; pointer-events: none; }

.card-pick__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 18px 14px;
  background: var(--bg-elev);
  border: 2px solid var(--border);
  border-radius: 10px;
  transition: border-color var(--t-base), transform var(--t-fast), box-shadow var(--t-base);
  color: var(--text-muted);
}

.card-pick:hover .card-pick__inner {
  border-color: var(--accent);
  transform: translateY(-2px);
  color: var(--text);
}

.card-pick:has(input:checked) .card-pick__inner {
  border-color: transparent;
  background:
    linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
    linear-gradient(120deg, var(--x-color), var(--o-color)) border-box;
  border: 2px solid transparent;
  box-shadow: 0 8px 24px rgba(0, 255, 255, 0.18);
  color: var(--text);
}

.card-pick__icon { color: var(--accent); }
.card-pick__title {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

/* Chip */
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; }

.chip {
  cursor: pointer;
  padding: 9px 18px;
  border-radius: 999px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  transition: background var(--t-base), color var(--t-base), border-color var(--t-base);
}

.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip:hover { color: var(--text); border-color: rgba(0, 255, 255, 0.3); }

.chip[data-tone="green"]:has(input:checked)  { background: rgba(132, 204, 22, 0.18); border-color: var(--success); color: var(--text); }
.chip[data-tone="yellow"]:has(input:checked) { background: rgba(250, 204, 21, 0.18); border-color: var(--warn); color: var(--text); }
.chip[data-tone="orange"]:has(input:checked) { background: rgba(245, 158, 11, 0.18); border-color: #F59E0B; color: var(--text); }
.chip[data-tone="red"]:has(input:checked)    { background: rgba(244, 63, 94, 0.18); border-color: var(--danger); color: var(--text); }

/* Segmented */
.seg {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.seg__opt { flex: 1; cursor: pointer; }
.seg__opt input { position: absolute; opacity: 0; pointer-events: none; }
.seg__opt > span {
  display: block;
  text-align: center;
  padding: 9px 12px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  transition: background var(--t-base), color var(--t-base);
}
.seg__opt:has(input:checked) > span {
  background: linear-gradient(120deg, var(--x-color), var(--o-color));
  color: #000;
}

/* Switch */
.switch-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px; }

.switch {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
}
.switch input { position: absolute; opacity: 0; pointer-events: none; }

.switch__track {
  width: 38px;
  height: 22px;
  border-radius: 999px;
  background: var(--bg-overlay);
  position: relative;
  transition: background var(--t-base);
  flex-shrink: 0;
}

.switch__thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: left var(--t-base) var(--ease);
}

.switch input:checked ~ .switch__track {
  background: linear-gradient(120deg, var(--x-color), var(--o-color));
}
.switch input:checked ~ .switch__track .switch__thumb { left: 18px; }

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 60px;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-elev);
  color: var(--text);
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(0, 255, 255, 0.3);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-base), transform var(--t-base);
  z-index: 50;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

.toast--show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Credit (overlay) */
.credit {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 11px;
  color: var(--text-dim);
  padding: 6px 10px;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  pointer-events: none;
}
.credit a { pointer-events: auto; }

.credit a {
  background: linear-gradient(120deg, var(--x-color), var(--o-color));
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  font-weight: 700;
  text-decoration: none;
  font-family: var(--font-display);
  letter-spacing: 0.1em;
}

/* — Animasiyalar — */
@keyframes scoreBump {
  0% { transform: scale(1); }
  40% { transform: scale(1.45); }
  100% { transform: scale(1); }
}

@keyframes overlayIn {
  from { opacity: 0; transform: translateY(14px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes barPulse {
  0%, 100% { opacity: 0.7; box-shadow: 0 0 8px currentColor; }
  50% { opacity: 1; box-shadow: 0 0 22px currentColor; }
}

/* — Mobil və portrait —
   Mobildə mümkün qədər çox yer canvas-a ayrılır:
   topbar və scoreboard kompakt olur, kənar boşluqlar minimuma enir. */
@media (max-width: 720px) {
  body { gap: 0; }
  .topbar { padding: 6px 10px; }
  .brand__name { font-size: 15px; letter-spacing: 1px; }
  .brand__bar { height: 16px; width: 3px; }
  .icon-btn { width: 34px; height: 34px; }

  /* Skor zolağı topbar-a çox yaxın */
  .scoreboard { gap: 10px; padding: 0 10px 6px; }
  .score__value { font-size: 28px; min-width: 38px; }
  .score__name { font-size: 10px; letter-spacing: 0.12em; }
  .score__sep { font-size: 10px; }

  /* Mobildə overlay-lər kompakt — canvas tam ekran tutur */
  .topbar { padding: 8px 12px; }
  .scoreboard { top: 50px; padding: 0 12px; }
  .credit { font-size: 9px; padding: 3px 8px; }

  /* Overlay-lar kompakt */
  .overlay__title { font-size: 38px; letter-spacing: 2px; }
  .overlay__bar { height: 36px; width: 5px; }
  .overlay__sub { font-size: 10px; letter-spacing: 0.3em; margin-bottom: 22px; }
  .overlay__inner { padding: 20px 16px; }
  .overlay__hints { font-size: 11px; gap: 6px; }
  .btn { padding: 10px 18px; font-size: 12px; }

  .modal { width: 96vw; }
  .modal__body { padding: 16px; gap: 18px; }
  .modal__head, .modal__foot { padding: 14px 16px; }
  .modal__head h2 { font-size: 13px; }
  .switch-grid { grid-template-columns: 1fr; }

  /* Credit footer mobildə kiçik */
  .credit { font-size: 9px; padding: 4px; letter-spacing: 0.04em; }

  /* CRT scanline-ları daha incə */
  .fx-scanlines { opacity: 0.05; }
}

/* Portrait — daha aqressiv kompaktlaşdırma */
@media (orientation: portrait) and (max-width: 640px) {
  body {
    grid-template-rows: auto auto 1fr auto;
  }
  .topbar { padding: 4px 8px; }
  .brand { gap: 8px; }
  .brand__name { font-size: 14px; }
  .scoreboard { padding: 0 8px 4px; gap: 8px; }
  .score__value { font-size: 24px; min-width: 32px; }
  .credit { font-size: 8px; padding: 3px; }
}

/* Çox kiçik ekranlar */
@media (max-width: 420px) {
  .overlay__title { font-size: 30px; }
  .overlay__bar { height: 28px; }
  .topbar__actions { gap: 4px; }
  .icon-btn { width: 32px; height: 32px; }
  .icon-btn svg { width: 16px; height: 16px; }
  .card-pick__inner { padding: 12px 8px; }
  .chip { padding: 6px 12px; font-size: 10px; }
  .seg__opt > span { padding: 8px 8px; font-size: 13px; }
}