/* ============================================
   SOLFÈGE — Sing the Scale | PNEUOMA
   Do Re Mi Fa Sol La Ti Do
   ============================================ */

:root {
    /* Warm Musical Theme */
    --bg-dark: #1a1a2e;
    --bg-mid: #16213e;
    --bg-light: #0f3460;
    
    /* Solfege Colors */
    --do-color: #e94560;
    --re-color: #ff6b35;
    --mi-color: #f7c52d;
    --fa-color: #26c485;
    --sol-color: #3498db;
    --la-color: #9b59b6;
    --ti-color: #e056fd;
    --do2-color: #e94560;
    
    /* Piano */
    --key-white: #fafafa;
    --key-white-hover: #f0f0f0;
    --key-white-active: #e0e0e0;
    --key-black: #2c2c2c;
    --key-black-hover: #3c3c3c;
    --key-black-active: #4c4c4c;
    
    /* Text */
    --text-light: #f8f8f8;
    --text-muted: rgba(248, 248, 248, 0.7);
    
    /* Accent */
    --accent-gold: #f7c52d;
    --accent-glow: rgba(247, 197, 45, 0.4);
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'SF Pro Rounded', -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.5;
}

/* Game Container */
.game-container {
    width: 100%;
    height: 100vh;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-mid) 100%);
}

/* Navigation */
.game-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 100;
}

.back-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: var(--text-light);
}

.score-display {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
}

.score-icon {
    font-size: 1.2rem;
}

.score-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-gold);
}

/* Screens */
.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.screen.active {
    opacity: 1;
    visibility: visible;
}

/* ========== TITLE SCREEN ========== */
.title-visual {
    margin-bottom: 30px;
}

.floating-notes {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.floating-notes .note {
    font-size: 3rem;
    animation: float-note 3s ease-in-out infinite;
}

.floating-notes .n1 { color: var(--do-color); animation-delay: 0s; }
.floating-notes .n2 { color: var(--mi-color); animation-delay: 0.5s; }
.floating-notes .n3 { color: var(--sol-color); animation-delay: 1s; }

@keyframes float-note {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.mini-piano {
    display: flex;
    justify-content: center;
    gap: 2px;
}

.mini-key {
    height: 60px;
    border-radius: 0 0 4px 4px;
}

.mini-key.white {
    width: 30px;
    background: var(--key-white);
}

.mini-key.black {
    width: 20px;
    height: 40px;
    background: var(--key-black);
    margin: 0 -10px;
    z-index: 1;
}

.title-content {
    text-align: center;
    padding: 20px;
}

.game-title {
    font-size: 4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--do-color), var(--mi-color), var(--sol-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.game-tagline {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin-bottom: 30px;
    letter-spacing: 2px;
}

.title-description {
    margin-bottom: 30px;
}

.title-description p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

/* Buttons */
.btn-primary {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 36px;
    background: linear-gradient(135deg, var(--do-color), var(--mi-color));
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 30px rgba(233, 69, 96, 0.3);
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(233, 69, 96, 0.4);
}

.btn-icon {
    font-size: 1.3rem;
}

.btn-secondary {
    display: inline-block;
    padding: 14px 28px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.title-meta {
    display: flex;
    gap: 15px;
    margin-top: 30px;
    justify-content: center;
}

.meta-item {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
}

/* ========== MIC SCREEN ========== */
.mic-content {
    text-align: center;
    padding: 20px;
    max-width: 400px;
}

.mic-icon-large {
    font-size: 5rem;
    margin-bottom: 20px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.mic-content h2 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.mic-content > p {
    color: var(--text-muted);
    margin-bottom: 30px;
}

.control-choice {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.mic-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    opacity: 0.7;
}

/* ========== GAME SCREEN ========== */
.game-screen {
    padding-top: 80px;
    justify-content: space-between;
    padding-bottom: 40px;
}

/* Note Target */
.note-target {
    text-align: center;
    margin-bottom: 20px;
}

.target-solfege {
    font-size: 4rem;
    font-weight: 700;
    color: var(--do-color);
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.target-instruction {
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* Your Pitch */
.your-pitch {
    text-align: center;
    margin-bottom: 30px;
}

.pitch-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.pitch-solfege {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-light);
    min-height: 48px;
}

/* Piano */
.piano-container {
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 0 20px;
}

.piano {
    display: flex;
    position: relative;
    background: linear-gradient(180deg, #333 0%, #222 100%);
    padding: 15px 10px 10px;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.piano-key {
    position: relative;
    cursor: pointer;
    transition: all 0.1s ease;
}

.piano-key.white {
    width: 50px;
    height: 180px;
    background: linear-gradient(180deg, var(--key-white) 0%, #e8e8e8 100%);
    border-radius: 0 0 6px 6px;
    margin: 0 1px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding-bottom: 10px;
    z-index: 1;
}

.piano-key.white:hover {
    background: linear-gradient(180deg, var(--key-white-hover) 0%, #e0e0e0 100%);
}

.piano-key.white.active {
    background: linear-gradient(180deg, var(--key-white-active) 0%, #d0d0d0 100%);
    transform: translateY(2px);
}

.piano-key.white.playing {
    box-shadow: inset 0 -10px 20px rgba(0, 0, 0, 0.1);
}

/* Solfege-specific colors when active */
.piano-key[data-solfege="Do"].lit { background: linear-gradient(180deg, var(--do-color), #c73e55) !important; }
.piano-key[data-solfege="Re"].lit { background: linear-gradient(180deg, var(--re-color), #e05a2a) !important; }
.piano-key[data-solfege="Mi"].lit { background: linear-gradient(180deg, var(--mi-color), #e0b020) !important; }
.piano-key[data-solfege="Fa"].lit { background: linear-gradient(180deg, var(--fa-color), #1fb070) !important; }
.piano-key[data-solfege="Sol"].lit { background: linear-gradient(180deg, var(--sol-color), #2980b9) !important; }
.piano-key[data-solfege="La"].lit { background: linear-gradient(180deg, var(--la-color), #8e44ad) !important; }
.piano-key[data-solfege="Ti"].lit { background: linear-gradient(180deg, var(--ti-color), #c94bdb) !important; }

.piano-key.lit .key-label {
    color: white !important;
}

.piano-key.black {
    width: 30px;
    height: 110px;
    background: linear-gradient(180deg, var(--key-black) 0%, #1a1a1a 100%);
    border-radius: 0 0 4px 4px;
    margin: 0 -15px;
    z-index: 2;
}

.piano-key.black:hover {
    background: linear-gradient(180deg, var(--key-black-hover) 0%, #2a2a2a 100%);
}

.piano-key.black.active {
    background: linear-gradient(180deg, var(--key-black-active) 0%, #3a3a3a 100%);
    transform: translateY(2px);
}

.key-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: #666;
    transition: color 0.2s ease;
}

/* Exercise Progress */
.exercise-progress {
    text-align: center;
    margin-top: 30px;
}

.progress-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
}

.progress-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.progress-dot.complete {
    background: var(--accent-gold);
}

.progress-dot.current {
    background: var(--do-color);
    animation: pulse 1s ease-in-out infinite;
}

.progress-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Feedback */
.feedback {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background: rgba(38, 196, 133, 0.9);
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 200;
}

.feedback.visible {
    opacity: 1;
}

.feedback.error {
    background: rgba(233, 69, 96, 0.9);
}

.feedback-icon {
    font-size: 1.5rem;
}

/* ========== COMPLETE SCREEN ========== */
.complete-content {
    text-align: center;
    padding: 20px;
}

.complete-icon {
    font-size: 5rem;
    margin-bottom: 20px;
    animation: bounce 1s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.complete-title {
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--do-color), var(--mi-color), var(--sol-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.complete-message {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.complete-stats {
    display: flex;
    gap: 40px;
    justify-content: center;
    margin-bottom: 30px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-gold);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.solfege-display {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.sol {
    padding: 10px 15px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
}

.sol.do, .sol.do2 { background: var(--do-color); }
.sol.re { background: var(--re-color); }
.sol.mi { background: var(--mi-color); color: #333; }
.sol.fa { background: var(--fa-color); }
.sol.sol { background: var(--sol-color); }
.sol.la { background: var(--la-color); }
.sol.ti { background: var(--ti-color); }

.complete-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 600px) {
    .game-title {
        font-size: 2.5rem;
    }

    .piano-key.white {
        width: 35px;
        height: 140px;
    }

    .piano-key.black {
        width: 22px;
        height: 85px;
        margin: 0 -11px;
    }

    .target-solfege {
        font-size: 3rem;
    }

    .key-label {
        font-size: 0.65rem;
    }
}