/* Chicken Attack — mobile-first shell around the canvas. */

:root {
  --bg: #05060f;
  --ink: #f2f6ff;
  --muted: #9aa8c7;
  --accent: #8ef1ff;
  --accent-2: #ff6b9d;
  --warn: #ffd166;
  --good: #69db7c;
  --panel: rgba(10, 14, 30, 0.86);
  --panel-line: rgba(140, 180, 255, 0.18);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --tap: 56px;
  /* Horizontal letterbox gutter, updated by the game on resize. */
  --gutter: 0px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: "Baloo 2", ui-rounded, "Segoe UI", system-ui, -apple-system, sans-serif;
  overscroll-behavior: none;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

body {
  position: fixed;
  inset: 0;
}

#game {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  background: #05060f;
}

#app {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

/* Kept in the stylesheet rather than a style attribute so the deployed
   Content-Security-Policy can forbid inline styles. */
.noscript-note {
  position: relative;
  z-index: 1;
  padding: 24px;
  font-size: 16px;
  color: var(--ink);
}

/* ------------------------------------------------------------------ screens */

.screen {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: calc(var(--safe-top) + 12px) calc(var(--safe-right) + 14px)
    calc(var(--safe-bottom) + 14px) calc(var(--safe-left) + 14px);
  pointer-events: auto;
  background: radial-gradient(120% 90% at 50% 0%, rgba(10, 16, 40, 0.55), rgba(3, 4, 12, 0.92));
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.screen.is-active {
  display: flex;
  animation: fade-in 0.22s ease-out;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
}

/* --------------------------------------------------------------------- menu */

.menu-inner {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  align-items: stretch;
  text-align: center;
}

.title-block {
  margin-top: 6vh;
}

.kicker {
  margin: 0 0 4px;
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.title {
  margin: 0;
  line-height: 0.86;
  font-weight: 900;
  letter-spacing: 0.02em;
  filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.55));
  animation: title-float 4.5s ease-in-out infinite;
}

.title span {
  display: block;
}

.title-line-1 {
  font-size: clamp(38px, 13vw, 62px);
  background: linear-gradient(180deg, #fff 10%, #ffe066 55%, #ff9f43 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.title-line-2 {
  font-size: clamp(46px, 16vw, 76px);
  background: linear-gradient(180deg, #ffffff 5%, #8ef1ff 45%, #4c6ef5 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transform: translateY(-4px);
}

@keyframes title-float {
  0%,
  100% {
    transform: translateY(0) rotate(-0.6deg);
  }
  50% {
    transform: translateY(-7px) rotate(0.6deg);
  }
}

.tagline {
  margin: 10px 0 0;
  font-size: 14px;
  color: #cbd6ef;
}

.menu-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-row {
  display: flex;
  gap: 10px;
}

.btn-row .btn {
  flex: 1;
}

.menu-footer {
  margin-top: auto;
  padding-bottom: 6px;
}

.best {
  margin: 0 0 6px;
  font-weight: 800;
  color: var(--warn);
  letter-spacing: 0.06em;
}

.hint {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.arcade-link {
  display: inline-block;
  margin: 0 0 8px;
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}

.arcade-link:active {
  opacity: 0.7;
}

/* ------------------------------------------------------------------ buttons */

.btn {
  appearance: none;
  border: 0;
  min-height: var(--tap);
  padding: 14px 18px;
  border-radius: 16px;
  font: inherit;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #08121f;
  background: linear-gradient(180deg, #b9f4ff, #58c8f0 60%, #3aa0ff);
  box-shadow: 0 6px 0 #1c5f96, 0 12px 24px rgba(0, 0, 0, 0.45);
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.08s ease, filter 0.15s ease;
}

.btn:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 #1c5f96, 0 6px 14px rgba(0, 0, 0, 0.4);
}

.btn-primary {
  background: linear-gradient(180deg, #ffe9a8, #ffc046 55%, #ff9f43);
  box-shadow: 0 6px 0 #a15a1d, 0 12px 24px rgba(0, 0, 0, 0.45);
}

.btn-primary:active {
  box-shadow: 0 2px 0 #a15a1d, 0 6px 14px rgba(0, 0, 0, 0.4);
}

.btn-ghost {
  color: var(--ink);
  background: rgba(24, 32, 60, 0.82);
  border: 1px solid var(--panel-line);
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.45);
  font-size: 15px;
}

.btn-ghost:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.45);
}

.btn-icon {
  margin-right: 6px;
}

.is-hidden {
  display: none !important;
}

/* -------------------------------------------------------------- difficulty */

.btn-note {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  opacity: 0.75;
}

.difficulty {
  margin-top: 4px;
}

.difficulty-options {
  display: flex;
  gap: 8px;
}

.difficulty-options button {
  flex: 1;
  min-height: 46px;
  padding: 8px 6px;
  border-radius: 14px;
  border: 1px solid var(--panel-line);
  background: rgba(18, 24, 46, 0.78);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, transform 0.08s ease;
}

.difficulty-options button:active {
  transform: translateY(2px);
}

.difficulty-options button[aria-pressed="true"] {
  background: linear-gradient(180deg, #ffe9a8, #ffc046);
  color: #2b1a05;
  border-color: #fff3bf;
  box-shadow: 0 0 0 2px rgba(255, 224, 102, 0.45), 0 3px 0 #a15a1d;
}

/* Checkmark so the pick reads even where colour is ambiguous. */
.difficulty-options button[aria-pressed="true"]::before {
  content: "✓ ";
  font-weight: 900;
}

.difficulty-blurb {
  margin: 8px 0 0;
  min-height: 2.6em;
  font-size: 12.5px;
  line-height: 1.4;
  color: var(--muted);
}

/* ------------------------------------------------------------------- sheets */

.sheet {
  width: 100%;
  max-width: 420px;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 18px calc(18px + var(--safe-bottom));
  border-radius: 22px;
  background: var(--panel);
  border: 1px solid var(--panel-line);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.sheet h2 {
  margin: 0;
  font-size: 26px;
  letter-spacing: 0.04em;
  text-align: center;
}

.sheet-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sheet-compact {
  max-width: 340px;
}

.row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.row-icon {
  flex: 0 0 30px;
  font-size: 22px;
  line-height: 1.2;
  text-align: center;
}

.row h3 {
  margin: 0 0 2px;
  font-size: 15px;
  letter-spacing: 0.04em;
}

.row p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.5;
  color: #cbd6ef;
}

.c-weapon {
  color: #ff6b9d;
}
.c-power {
  color: var(--good);
}
.c-missile {
  color: #91a7ff;
}
.c-shield {
  color: #66d9e8;
}
.c-life {
  color: #ffa8c5;
}
.c-drones {
  color: #a5d8ff;
}
.c-rapid {
  color: #ffd166;
}
.c-magnet {
  color: #ff8787;
}
.c-double {
  color: #ffe066;
}
.c-warp {
  color: #c792ff;
}
.c-nuke {
  color: #ff6b6b;
}

/* ------------------------------------------------------------------ toggles */

.toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 4px 2px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.switch {
  position: relative;
  flex: 0 0 52px;
  height: 30px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  transition: background 0.18s ease;
}

.switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.18s ease;
}

.toggle input:checked + .switch {
  background: linear-gradient(90deg, #58c8f0, #69db7c);
}

.toggle input:checked + .switch::after {
  transform: translateX(22px);
}

.toggle input:focus-visible + .switch {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.segmented-label {
  display: block;
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 700;
}

.segmented-options {
  display: flex;
  gap: 8px;
}

.segmented-options button {
  flex: 1;
  min-height: 46px;
  border-radius: 14px;
  border: 1px solid var(--panel-line);
  background: rgba(24, 32, 60, 0.8);
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.segmented-options button[aria-pressed="true"] {
  background: linear-gradient(180deg, #58c8f0, #3aa0ff);
  color: #08121f;
  border-color: transparent;
}

/* ------------------------------------------------------------------- scores */

.score-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.score-list li {
  display: grid;
  grid-template-columns: 22px 1fr auto auto auto;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  font-size: 14px;
}

.score-list li.is-top {
  background: linear-gradient(90deg, rgba(255, 209, 102, 0.22), rgba(255, 209, 102, 0.05));
}

.score-list .pos {
  font-weight: 900;
  color: var(--warn);
}

.score-list .pts {
  font-weight: 900;
}

.score-list .wv {
  font-size: 12px;
  color: var(--muted);
}

.empty {
  margin: 0;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

/* --------------------------------------------------------- lifetime stats */

.lifetime {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin: 4px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--panel-line);
}

.lifetime > div {
  text-align: center;
}

.lifetime dt {
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.lifetime dd {
  margin: 2px 0 0;
  font-size: 16px;
  font-weight: 900;
}

/* ---------------------------------------------------------------- game over */

.rank {
  margin: -4px 0 0;
  text-align: center;
  font-weight: 800;
  color: var(--warn);
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.result-grid > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
}

.result-grid span {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.result-grid b {
  font-size: 19px;
  font-weight: 900;
}

/* ------------------------------------------------------------- name entry */

.name-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.name-label {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.name-row {
  display: flex;
  gap: 8px;
}

.name-input {
  flex: 1;
  min-height: 48px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid var(--panel-line);
  background: rgba(8, 12, 26, 0.9);
  color: var(--ink);
  font: inherit;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.name-input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.name-save {
  flex: 0 0 96px;
  min-height: 48px;
}

.score-list .diff {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--muted);
}

.score-list .diff.is-superstar {
  background: rgba(255, 107, 157, 0.22);
  color: #ffb3cd;
}

.score-list .diff.is-rookie {
  background: rgba(105, 219, 124, 0.18);
  color: #a9e6b4;
}

/* ---------------------------------------------------------------------- hud */

.hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hud.is-hidden {
  display: none;
}

.round-btn {
  position: absolute;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  background: rgba(12, 18, 38, 0.6);
  color: var(--ink);
  font: inherit;
  font-weight: 800;
  pointer-events: auto;
  cursor: pointer;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: transform 0.08s ease, background 0.15s ease;
}

.round-btn:active {
  transform: scale(0.92);
  background: rgba(30, 44, 88, 0.8);
}

.hud-pause {
  top: calc(var(--safe-top) + 8px);
  right: calc(var(--safe-right) + var(--gutter) + 10px);
  width: 44px;
  height: 44px;
  font-size: 13px;
  letter-spacing: 1px;
}

.hud-missile {
  right: calc(var(--safe-right) + var(--gutter) + 14px);
  bottom: calc(var(--safe-bottom) + 74px);
  width: 68px;
  height: 68px;
  font-size: 26px;
  background: rgba(60, 40, 120, 0.42);
  border-color: rgba(160, 180, 255, 0.35);
}

.missile-glyph {
  line-height: 1;
  transform: rotate(-45deg) translateY(-1px);
}

.missile-count {
  position: absolute;
  right: -2px;
  bottom: -2px;
  min-width: 24px;
  height: 24px;
  padding: 0 5px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: #ff6b9d;
  color: #1a0a12;
  font-size: 13px;
  font-weight: 900;
}

.hud-missile.is-empty {
  opacity: 0.45;
}

.touch-hint {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 32%;
  margin: 0;
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(230, 240, 255, 0.85);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
  animation: hint-pulse 1.6s ease-in-out infinite;
  transition: opacity 0.4s ease;
}

.touch-hint.is-gone {
  opacity: 0;
}

@keyframes hint-pulse {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.75;
  }
  50% {
    transform: translateY(-4px);
    opacity: 1;
  }
}

/* ------------------------------------------------------------- adaptations */

/* Short/landscape screens: tighten the menu so everything still fits. */
@media (max-height: 620px) {
  .title-block {
    margin-top: 2vh;
  }
  .menu-inner {
    gap: 14px;
  }
  .tagline {
    display: none;
  }
  .btn {
    min-height: 48px;
    padding: 11px 16px;
    font-size: 15px;
  }
}

@media (orientation: landscape) and (max-height: 520px) {
  .menu-inner {
    max-width: 620px;
  }
  /* Trim the chrome so the whole menu fits without scrolling. */
  .kicker,
  .difficulty-blurb {
    display: none;
  }
  .title-line-1 {
    font-size: 34px;
  }
  .title-line-2 {
    font-size: 40px;
  }
  .menu-buttons {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .menu-buttons > .btn {
    flex: 1 1 100%;
  }
  .hud-missile {
    bottom: calc(var(--safe-bottom) + 20px);
  }
  .sheet {
    max-width: 560px;
  }
  .result-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Roomy screens get a slightly larger UI. */
@media (min-width: 700px) and (min-height: 700px) {
  .menu-inner,
  .sheet {
    max-width: 460px;
  }
  .hud-missile {
    width: 76px;
    height: 76px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .title,
  .touch-hint {
    animation: none;
  }
  .screen.is-active {
    animation: none;
  }
}