/* css/style.css — Dusty Game Styles */
@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');

/* ── Reset & Base ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #03040a;
  --surface:     rgba(10, 10, 24, 0.82);
  --border:      rgba(139, 92, 246, 0.25);
  --accent:      #8B5CF6;
  --accent2:     #EC4899;
  --gold:        #FCD34D;
  --warning:     #F97316;
  --text:        #E2E8F0;
  --text-muted:  #94A3B8;
  --green:       #34D399;
  --font:        'Space Mono', monospace;
}

html, body {
  width: 100%; 
  height: 100vh;
  height: calc(var(--vh, 1vh) * 100);
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-user-select: none; user-select: none;
}

canvas#game-canvas {
  position: fixed; top: 0; left: 0;
  width: 100%; 
  height: 100vh;
  height: calc(var(--vh, 1vh) * 100);
  display: block;
  touch-action: none;
}

/* ── Screens ──────────────────────────────────────── */
.screen {
  position: fixed; top: 0; left: 0; right: 0;
  height: 100vh;
  height: calc(var(--vh, 1vh) * 100);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.35s ease;
  z-index: 10;
}
.screen.active { opacity: 1; pointer-events: all; }

/* HUD is always full-screen overlay, flex column */
.hud-screen {
  flex-direction: column;
  align-items: stretch;
  justify-content: space-between;
  padding: 0;
}

/* ── Card ─────────────────────────────────────────── */
.screen-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.4rem 2.8rem;
  text-align: center;
  backdrop-filter: blur(18px);
  box-shadow: 0 0 60px rgba(139, 92, 246, 0.15), 0 8px 32px rgba(0,0,0,0.5);
  max-width: 520px;
  width: 90%;
  max-height: 85vh;
  max-height: 85svh;
  overflow-y: auto;
  touch-action: pan-y;
  -webkit-overflow-scrolling: touch;
}

/* ── INTRO ────────────────────────────────────────── */
.game-title {
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 700;
  letter-spacing: 0.25em;
  background: linear-gradient(135deg, #A78BFA 0%, #EC4899 60%, #FCD34D 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titlePulse 3s ease-in-out infinite;
  margin-bottom: 0.3rem;
}
@keyframes titlePulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.3) drop-shadow(0 0 20px rgba(167,139,250,0.6)); }
}
.game-subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  margin-bottom: 1.4rem;
}
.hi-score {
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  margin-bottom: 1.6rem;
  min-height: 1.2rem;
}
.game-version {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  opacity: 0.6;
}

/* ── HOW TO PLAY ──────────────────────────────────── */
.howtoplay-card { text-align: left; padding: 2rem 2.2rem; }
.howtoplay-title {
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-align: center;
  margin-bottom: 1.6rem;
}
.rules-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.8rem;
}
.rules-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}
.rule-icon {
  font-size: 1.1rem;
  color: var(--accent);
  min-width: 1.4rem;
  margin-top: 0.05rem;
}
.rules-list strong {
  display: block;
  font-size: 0.82rem;
  color: var(--text);
  margin-bottom: 0.15rem;
  letter-spacing: 0.05em;
}
.rules-list span {
  font-size: 0.73rem;
  color: var(--text-muted);
  line-height: 1.5;
  font-style: italic;
}

/* ── Buttons ──────────────────────────────────────── */
/* Reset native button appearance for all button classes (fixes iOS/iPadOS white bg) */
.btn-primary,
.btn-secondary,
.btn-link,
.btn-pause {
  -webkit-appearance: none;
  appearance: none;
}

.btn-primary {
  display: block; width: 100%;
  padding: 0.85rem 1.5rem;
  border: none; border-radius: 50px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-family: var(--font);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.35);
  margin-top: 0.5rem;
}
.btn-primary:hover  { transform: translateY(-2px); filter: brightness(1.12); box-shadow: 0 8px 28px rgba(139,92,246,0.5); }
.btn-primary:active { transform: translateY(0); filter: brightness(0.95); }

.btn-secondary {
  display: block; width: 100%;
  padding: 0.7rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 50px;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  margin-top: 0.5rem;
  text-decoration: none;
  text-align: center;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* Small text-link style button */
.btn-link {
  display: block; width: 100%;
  padding: 0.5rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  margin-top: 0.6rem;
  transition: color 0.2s;
  text-decoration: none;
}
.btn-link:hover { color: var(--accent); }

/* ── HUD ──────────────────────────────────────────── */
.hud-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px 10px;
  background: linear-gradient(180deg, rgba(3,4,10,0.85) 0%, rgba(3,4,10,0) 100%);
}
.hud-left, .hud-right {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 120px;
}
.hud-right { justify-content: flex-end; }
.hud-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.hud-label {
  font-size: 0.62rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
}
.hud-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.06em;
}
.hud-timer {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.1em;
  text-shadow: 0 0 10px rgba(139,92,246,0.5);
  transition: color 0.3s, text-shadow 0.3s;
}
.hud-timer.warning {
  color: var(--warning);
  text-shadow: 0 0 14px rgba(249,115,22,0.7);
  animation: timerPulse 0.6s ease-in-out infinite;
}
@keyframes timerPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
.hud-zones {
  display: flex; gap: 6px; align-items: center;
}
.zone-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  background: transparent;
  transition: background 0.3s, box-shadow 0.3s;
}
.zone-dot.captured {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.hud-score-wrap {
  display: flex; flex-direction: column; align-items: flex-end; gap: 1px;
}
.btn-pause {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1rem;
  width: 34px; height: 34px;
  border-radius: 8px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  flex-shrink: 0;
  -webkit-appearance: none;
  appearance: none;
}
.btn-pause:hover { border-color: var(--accent); color: var(--accent); background: rgba(139,92,246,0.1); }

.btn-add-time {
  background: rgba(252, 211, 77, 0.1);
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.2s;
  -webkit-appearance: none;
  appearance: none;
}
.btn-add-time:hover {
  background: var(--gold);
  color: #000;
  box-shadow: 0 0 10px rgba(252, 211, 77, 0.5);
}
.btn-add-time:active {
  transform: scale(0.95);
}

/* ── Particle Counter ─────────────────────────────── */
.hud-bottom {
  display: flex;
  justify-content: flex-start;
  padding: 0 20px 16px;
}
.hud-particles {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--text-muted);
  background: rgba(3,4,10,0.6);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
  transition: color 0.3s;
}
.particle-icon { color: var(--accent); font-size: 0.7rem; }
.particle-sep  { color: var(--text-muted); margin: 0 1px; }
#particle-near { color: var(--accent); font-weight: 700; }

/* ── Scatter Warning ──────────────────────────────── */
.scatter-warn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(1rem, 4vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--warning);
  text-shadow: 0 0 20px rgba(249,115,22,0.8);
  animation: scatterFlash 0.8s ease-out forwards;
  pointer-events: none;
}
.scatter-warn.hidden { display: none; }
@keyframes scatterFlash {
  0% { opacity: 1; transform: translate(-50%,-50%) scale(1.2); }
  100% { opacity: 0; transform: translate(-50%,-50%) scale(0.8); }
}

/* ── Power-up Banner ──────────────────────────────── */
.powerup-banner {
  position: absolute;
  top: 18%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--gold);
  text-shadow: 0 0 16px rgba(252,211,77,0.8);
  background: rgba(3,4,10,0.75);
  border: 1px solid rgba(252,211,77,0.3);
  border-radius: 30px;
  padding: 8px 22px;
  pointer-events: none;
  white-space: nowrap;
}
.powerup-banner.hidden { display: none; }
.powerup-banner.fade-out {
  animation: bannerFade 1.8s ease-out forwards;
}
@keyframes bannerFade {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0); }
  70%  { opacity: 1; transform: translateX(-50%) translateY(-8px); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-18px); }
}

/* ── PAUSE ────────────────────────────────────────── */
.pause-icon { font-size: 2.5rem; margin-bottom: 0.5rem; opacity: 0.7; }
.pause-title {
  font-size: 1.6rem;
  letter-spacing: 0.3em;
  color: var(--text-muted);
  margin-bottom: 1.6rem;
}

/* ── STAGE CLEAR ──────────────────────────────────── */
.clear-star {
  font-size: 2.2rem;
  color: var(--gold);
  margin-bottom: 0.3rem;
  animation: starSpin 2s linear infinite;
}
@keyframes starSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.clear-title {
  font-size: 1.5rem;
  letter-spacing: 0.25em;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}
.clear-info {
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 1.2rem;
}

/* ── GAME OVER ────────────────────────────────────── */
.gameover-title {
  font-size: 1.8rem;
  letter-spacing: 0.2em;
  color: var(--accent2);
  margin-bottom: 1rem;
  text-shadow: 0 0 20px rgba(236,72,153,0.5);
}
.go-score {
  color: var(--text);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}
.go-hiscore {
  color: var(--gold);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  margin-bottom: 1.4rem;
  min-height: 1.2rem;
}

/* ── Register Area ────────────────────────────────── */
.register-area {
  background: rgba(3, 4, 10, 0.4);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
}
.register-label {
  font-size: 0.85rem;
  color: var(--gold);
  margin-bottom: 0.8rem;
  letter-spacing: 0.05em;
}
.register-input-group {
  display: flex;
  gap: 0.5rem;
}
.name-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 0.6rem 0.8rem;
  font-family: var(--font);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
}
.name-input:focus {
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.1);
}
.btn-submit {
  background: rgba(139, 92, 246, 0.2);
  border: 1px solid var(--accent);
  color: #fff;
  border-radius: 8px;
  padding: 0 1rem;
  font-family: var(--font);
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-submit:hover {
  background: var(--accent);
}
.btn-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 480px) {
  .screen-card { padding: 1.8rem 1.4rem; }
  .hud-top { padding: 10px 12px 8px; }
  .hud-timer { font-size: 1.2rem; }
  .hud-value { font-size: 0.95rem; }
  .howtoplay-card { padding: 1.6rem 1.2rem; }
  .rules-list li { gap: 0.6rem; }
}

@media (min-width: 768px) {
  .screen-card { max-width: 600px; }
}

/* ── Landscape Prompt ──────────────────────────────── */
#landscape-prompt {
  display: none;
  position: fixed; top: 0; left: 0; right: 0;
  height: 100vh;
  height: calc(var(--vh, 1vh) * 100);
  background: rgba(3, 4, 10, 0.98);
  z-index: 9999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--text);
  padding: 2rem;
  backdrop-filter: blur(10px);
}
@media (orientation: portrait) and (hover: none) and (pointer: coarse) {
  #landscape-prompt {
    display: flex;
  }
}