/* ============================================================
   NEON ARENA — Rock Paper Scissors
   Dark Blue/Purple Neon Theme
   ============================================================ */

:root {
  --green-primary: #7f7dff;
  --green-secondary: #5f5aff;
  --green-accent: #4b33b8;
  --green-dim: rgba(127,125,255,0.35);
  --bg-1: #0a0b2a;
  --bg-2: #120f40;
  --bg-3: #050310;
  --text: #e9edff;
  --text-dim: #b6bfff88;
  --glass-bg: rgba(127, 125, 255, 0.05);
  --glass-border: rgba(127, 125, 255, 0.16);
  --glass-border-strong: rgba(127, 125, 255, 0.35);
  --win: #b3b0ff;
  --lose: #ff5b7a;
  --draw: #a5b4ff;
  --font-display: 'Orbitron', monospace;
  --font-body: 'Rajdhani', sans-serif;
  --shadow-glow: 0 0 20px rgba(127,125,255,0.4), 0 0 60px rgba(96,86,255,0.18);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.6), 0 0 0 1px var(--glass-border);
  --r: 16px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  background: radial-gradient(ellipse at 30% 20%, #0b0e38 0%, var(--bg-2) 35%, var(--bg-3) 100%);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
  position: relative;
}

/* ---- Background Grid ---- */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(127,125,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127,125,255,0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ---- Particles ---- */
#particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.particle {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-primary), var(--green-secondary));
  opacity: 0;
  animation: floatUp linear infinite;
}
@keyframes floatUp {
  0%   { transform: translateY(100vh) scale(0); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.2; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* ---- App Wrapper ---- */
.app-wrapper {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

/* ---- Header ---- */
.header { text-align: center; }

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 4px;
}

.logo-icon {
  font-size: 2rem;
  filter: drop-shadow(0 0 12px var(--green-primary));
  animation: pulse-glow 2s ease-in-out infinite;
}

.logo h1 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--text);
  text-shadow: 0 0 20px rgba(127,125,255,0.40.5);
}

.logo-accent {
  color: var(--green-primary);
  text-shadow: var(--shadow-glow);
}

.subtitle {
  font-family: var(--font-body);
  font-size: 0.85rem;
  letter-spacing: 0.4em;
  color: var(--text-dim);
  text-transform: uppercase;
}

/* ---- Mode Bar ---- */
.mode-bar {
  display: flex;
  gap: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 6px;
  border-radius: 50px;
  backdrop-filter: blur(10px);
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 50px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.25s ease;
}

.mode-btn:hover {
  color: var(--green-primary);
  background: rgba(127,125,255,0.12);
}

.mode-btn.active {
  background: linear-gradient(135deg, var(--green-accent), #2b1a7a);
  color: var(--green-primary);
  box-shadow: 0 0 16px rgba(127,125,255,0.3), inset 0 1px 0 rgba(255,255,255,0.1);
  border: 1px solid var(--glass-border-strong);
}

.mode-icon { font-size: 1rem; }

/* ---- Difficulty Bar ---- */
.difficulty-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  transition: opacity 0.3s, transform 0.3s;
}

.difficulty-bar.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-6px);
}

.diff-label {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  margin-right: 4px;
}

.diff-btn {
  padding: 6px 18px;
  border-radius: 50px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-dim);
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.diff-btn:hover { color: var(--green-primary); border-color: var(--green-secondary); }

.diff-btn.active {
  background: rgba(127,125,255,0.16);
  color: var(--green-primary);
  border-color: var(--green-primary);
  box-shadow: 0 0 10px rgba(127,125,255,0.25);
}

/* ---- HUD (Scores + Timer) ---- */
.hud {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 600px;
}

.score-card {
  text-align: center;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--r);
  padding: 14px 20px;
  backdrop-filter: blur(12px);
  transition: box-shadow 0.3s;
}

.score-label {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.score-value {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--green-primary);
  text-shadow: 0 0 16px rgba(127,125,255,0.45);
  line-height: 1;
  transition: transform 0.2s;
}

.score-value.bump {
  animation: scoreBump 0.35s ease;
}

@keyframes scoreBump {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.5); }
  100% { transform: scale(1); }
}

/* ---- Timer ---- */
.timer-wrap { text-align: center; }

.timer-ring {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto 4px;
}

.timer-btn {
  margin-top: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  background: rgba(127,125,255,0.12);
  color: var(--green-primary);
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s, border-color 0.2s;
}

.timer-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  background: rgba(127,125,255,0.22);
}

.timer-btn:disabled {
  opacity: 0.6;
  cursor: default;
}

.timer-help {
  margin-top: 6px;
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

.timer-ring svg {
  width: 80px;
  height: 80px;
  transform: rotate(-90deg);
}

.ring-bg {
  fill: none;
  stroke: rgba(127,125,255,0.08);
  stroke-width: 6;
}

.ring-fill {
  fill: none;
  stroke: var(--green-primary);
  stroke-width: 6;
  stroke-linecap: round;
  filter: drop-shadow(0 0 6px var(--green-primary));
  transition: stroke-dashoffset 1s linear, stroke 0.5s;
}

.timer-num {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--green-primary);
  text-shadow: 0 0 12px rgba(127,125,255,0.6);
  transition: color 0.5s;
}

.timer-label {
  font-family: var(--font-display);
  font-size: 0.55rem;
  letter-spacing: 0.4em;
  color: var(--text-dim);
}

/* Timer color states */
.timer-yellow .ring-fill { stroke: #f5c518; filter: drop-shadow(0 0 6px #f5c518); }
.timer-yellow .timer-num { color: #f5c518; text-shadow: 0 0 12px rgba(245,197,24,0.6); }

.timer-red .ring-fill { stroke: var(--lose); filter: drop-shadow(0 0 6px var(--lose)); }
.timer-red .timer-num { color: var(--lose); text-shadow: 0 0 12px rgba(255,59,48,0.6); animation: blink 0.5s ease infinite; }

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ---- Arena ---- */
.arena {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  width: 100%;
  max-width: 760px;
}

/* ---- Player Cards ---- */
.player-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 24px 16px;
  text-align: center;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.4s, border-color 0.4s, transform 0.2s;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.card-header {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.move-display {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(0,255,136,0.05);
  border: 2px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.move-emoji {
  font-size: 2.4rem;
  line-height: 1;
  display: block;
  transition: transform 0.3s;
}

.move-emoji.idle { opacity: 0.4; filter: grayscale(1); }

.move-name {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--text-dim);
  text-transform: uppercase;
}

/* Win/Lose card states */
.player-card.win-glow {
  border-color: var(--win);
  box-shadow: 0 0 30px rgba(0,255,136,0.4), 0 0 80px rgba(0,255,136,0.1), var(--shadow-card);
  animation: winPulse 0.8s ease;
}

.player-card.lose-shake {
  border-color: var(--lose);
  box-shadow: 0 0 30px rgba(255,59,48,0.4), var(--shadow-card);
  animation: loseShake 0.5s ease;
}

.player-card.draw-glow {
  border-color: var(--draw);
  box-shadow: 0 0 20px rgba(136,153,170,0.3), var(--shadow-card);
}

@keyframes winPulse {
  0%   { transform: scale(1); }
  30%  { transform: scale(1.04); }
  60%  { transform: scale(0.98); }
  100% { transform: scale(1); }
}

@keyframes loseShake {
  0%   { transform: translateX(0); }
  20%  { transform: translateX(-8px); }
  40%  { transform: translateX(8px); }
  60%  { transform: translateX(-5px); }
  80%  { transform: translateX(5px); }
  100% { transform: translateX(0); }
}

/* ---- Center Column ---- */
.center-column {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 90px;
}

.vs-badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 6px 14px;
  border-radius: 50px;
}

.result-display {
  text-align: center;
  min-height: 52px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

#resultText {
  font-family: var(--font-display);
  font-size: clamp(0.6rem, 2vw, 0.78rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-align: center;
  transition: color 0.3s;
}

#resultText.win  { color: var(--win); text-shadow: 0 0 14px rgba(0,255,136,0.7); }
#resultText.lose { color: var(--lose); text-shadow: 0 0 14px rgba(255,59,48,0.6); }
#resultText.draw { color: var(--draw); }

#resultEmoji { font-size: 1.4rem; transition: transform 0.3s; }

.round-info {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

/* ---- Move Buttons ---- */
.move-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.move-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 18px 24px;
  border-radius: 18px;
  border: 1px solid var(--glass-border);
  background: linear-gradient(160deg, rgba(0,255,136,0.06) 0%, rgba(0,255,136,0.02) 100%);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
  min-width: 100px;
  backdrop-filter: blur(10px);
}

.move-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,255,136,0.12), transparent);
  opacity: 0;
  transition: opacity 0.25s;
}

.move-btn:hover::before { opacity: 1; }

.move-btn:hover {
  border-color: var(--green-secondary);
  box-shadow: 0 0 20px rgba(0,255,136,0.3), 0 8px 24px rgba(0,0,0,0.4);
  transform: translateY(-4px) scale(1.03);
}

.move-btn:active { transform: scale(0.95); }

.move-btn.clicked {
  animation: btnBounce 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes btnBounce {
  0%   { transform: scale(1); }
  40%  { transform: scale(0.88); }
  70%  { transform: scale(1.12); }
  100% { transform: scale(1); }
}

.move-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none !important;
}

.btn-icon { font-size: 2rem; filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5)); }

.btn-label {
  font-family: var(--font-display);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text-dim);
}

.btn-glow {
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: var(--green-primary);
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.25s;
  box-shadow: 0 0 10px var(--green-primary);
}

.move-btn:hover .btn-glow { opacity: 1; }
.move-btn:hover .btn-label { color: var(--green-primary); }

/* ---- PVP Indicator ---- */
.pvp-indicator {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.turn-badge {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 8px 20px;
  border-radius: 50px;
  background: rgba(0,255,136,0.08);
  border: 1px solid var(--glass-border-strong);
  color: var(--green-primary);
}

.hidden-move-notice {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

/* ---- Game Over Overlay ---- */
.gameover-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.gameover-card {
  background: linear-gradient(160deg, rgba(0,60,40,0.9), rgba(0,20,15,0.95));
  border: 1px solid var(--glass-border-strong);
  border-radius: 24px;
  padding: 48px 40px;
  text-align: center;
  box-shadow: 0 0 80px rgba(0,255,136,0.25), 0 40px 80px rgba(0,0,0,0.8);
  max-width: 340px;
  width: 90%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  animation: popIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popIn {
  from { transform: scale(0.6); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

.gameover-icon { font-size: 3.5rem; }
.gameover-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--green-primary);
  text-shadow: var(--shadow-glow);
}
.gameover-sub {
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  text-transform: uppercase;
}
.gameover-score {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--text);
  letter-spacing: 0.1em;
}

/* ---- Reset Button ---- */
.controls { margin-top: 4px; }

.reset-btn {
  padding: 12px 32px;
  border-radius: 50px;
  border: 1px solid var(--glass-border-strong);
  background: linear-gradient(135deg, rgba(0,255,136,0.1), rgba(0,100,60,0.15));
  color: var(--green-primary);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.reset-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,255,136,0.15), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.reset-btn:hover {
  box-shadow: 0 0 20px rgba(0,255,136,0.35);
  transform: translateY(-2px);
}

.reset-btn:hover::after { opacity: 1; }
.reset-btn:active { transform: scale(0.96); }

.reset-btn.pulse {
  animation: btnPulse 1.5s ease infinite;
}

@keyframes btnPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(0,255,136,0.3); }
  50%       { box-shadow: 0 0 30px rgba(0,255,136,0.7), 0 0 60px rgba(0,255,136,0.3); }
}

/* ---- Reveal Animation ---- */
.move-emoji.reveal {
  animation: popReveal 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popReveal {
  0%   { transform: scale(0) rotate(-20deg); opacity: 0; }
  60%  { transform: scale(1.25) rotate(5deg); opacity: 1; }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

.move-display.thinking {
  border-color: var(--green-secondary);
  box-shadow: 0 0 14px rgba(0,255,136,0.3);
  animation: thinkPulse 0.6s ease infinite;
}

@keyframes thinkPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(0,255,136,0.2); }
  50%       { box-shadow: 0 0 20px rgba(0,255,136,0.5); }
}

/* ---- Glow Pulse ---- */
@keyframes pulse-glow {
  0%, 100% { filter: drop-shadow(0 0 8px var(--green-primary)); }
  50%       { filter: drop-shadow(0 0 20px var(--green-primary)); }
}

/* ---- Result Text Animation ---- */
#resultText.pop {
  animation: textPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes textPop {
  0%   { transform: scale(0.7); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* ---- AI Thinking dots ---- */
.thinking-dots::after {
  content: '';
  animation: dots 1s steps(3, end) infinite;
}
@keyframes dots {
  0%   { content: ''; }
  33%  { content: '.'; }
  66%  { content: '..'; }
  100% { content: '...'; }
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .arena {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
  }

  .center-column {
    flex-direction: row;
    justify-content: center;
    order: -1;
  }

  .player-card { min-height: 120px; flex-direction: row; padding: 16px; gap: 16px; }
  .move-display { width: 64px; height: 64px; flex-shrink: 0; }
  .move-emoji { font-size: 2rem; }

  #cardOpponent { order: 2; }
  .center-column { order: 1; }
  #cardPlayer { order: 0; }

  .hud { grid-template-columns: 1fr auto 1fr; gap: 8px; }

  .score-value { font-size: 1.8rem; }
  .timer-ring, .timer-ring svg { width: 64px; height: 64px; }
  .timer-num { font-size: 1.1rem; }

  .move-btn { padding: 14px 18px; min-width: 85px; }
  .btn-icon { font-size: 1.7rem; }

  .mode-btn { padding: 8px 14px; font-size: 0.65rem; }
}

@media (max-width: 380px) {
  .move-buttons { gap: 8px; }
  .move-btn { min-width: 76px; padding: 12px 12px; }
  .btn-icon { font-size: 1.5rem; }
  .btn-label { font-size: 0.5rem; }
}