/* style.css — Kid-friendly piano game styles */

@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@400;600;700&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Fredoka', sans-serif;
  background: #1a1a2e;
  color: #fff;
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

/* Screens */
.screen {
  display: none;
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
}

.screen.active {
  display: flex;
  flex-direction: column;
}

/* ===================== HOME SCREEN ===================== */
#home-screen {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  align-items: center;
  overflow-y: auto;
}

.home-header {
  text-align: center;
  padding: 30px 20px 10px;
}

.home-title {
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(90deg, #FF4444, #FF8C00, #FFD700, #44BB44, #00CED1, #4488FF, #9944FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.home-subtitle {
  font-size: 1.1rem;
  color: #aaa;
  margin-top: 5px;
}

/* MIDI status */
.midi-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255,255,255,0.08);
  border-radius: 20px;
  margin: 15px 0;
  font-size: 0.9rem;
}

.midi-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ff4444;
  transition: background 0.3s;
}

.midi-dot.connected {
  background: #44ff88;
  box-shadow: 0 0 8px #44ff88;
}

.midi-dot.disconnected {
  background: #ff4444;
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Song list */
#song-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
  width: 100%;
  max-width: 500px;
}

.song-card {
  display: flex;
  background: rgba(255,255,255,0.07);
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  border: 2px solid transparent;
}

.song-card:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.song-card:active {
  transform: scale(0.98);
}

.song-color-bar {
  width: 8px;
  flex-shrink: 0;
}

.song-info {
  padding: 16px 20px;
}

.song-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.song-difficulty {
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.song-desc {
  font-size: 0.85rem;
  color: #aaa;
}

/* ===================== PLAY SCREEN ===================== */
#play-screen {
  background: #1a1a2e;
  position: relative;
}

#game-canvas {
  width: 100%;
  height: 100%;
}

.play-controls {
  position: absolute;
  top: 55px;
  left: 10px;
  display: flex;
  gap: 8px;
  z-index: 10;
}

.play-btn {
  padding: 6px 14px;
  border: none;
  border-radius: 10px;
  font-family: 'Fredoka', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s;
  background: rgba(255,255,255,0.15);
  color: #fff;
}

.play-btn:hover {
  transform: scale(1.05);
  background: rgba(255,255,255,0.25);
}

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

/* ===================== RESULTS SCREEN ===================== */
#results-screen {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.results-card {
  background: rgba(255,255,255,0.07);
  border-radius: 24px;
  padding: 30px 40px;
  max-width: 420px;
  width: 90%;
}

#result-song-title {
  font-size: 1.2rem;
  color: #aaa;
  margin-bottom: 10px;
}

.result-stars-row {
  font-size: 2.5rem;
  margin: 10px 0;
}

.result-star {
  opacity: 0.2;
  transition: opacity 0.3s;
  filter: grayscale(100%);
}

.result-star.earned {
  opacity: 1;
  filter: none;
}

#result-message {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 15px 0;
}

.result-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 20px 0;
}

.stat-box {
  background: rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 12px;
}

.stat-label {
  font-size: 0.75rem;
  color: #888;
  text-transform: uppercase;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
}

.result-buttons {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  justify-content: center;
}

.result-btn {
  padding: 12px 24px;
  border: none;
  border-radius: 14px;
  font-family: 'Fredoka', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s;
}

.result-btn:hover {
  transform: scale(1.05);
}

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

.btn-primary {
  background: linear-gradient(135deg, #44ff88, #00CED1);
  color: #1a1a2e;
}

.btn-secondary {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

/* Confetti animation */
.confetti-piece {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  top: -10px;
  animation: confetti-fall 3s ease-in forwards;
}

@keyframes confetti-fall {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(720deg);
    opacity: 0;
  }
}

/* ===================== Scrollbar ===================== */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 3px;
}