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

body {
    background: #46975f;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    font-family: 'Arial', sans-serif;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

#gameContainer {
    position: relative;
    border: 3px solid #543847;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

canvas { display: block; }

#overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    z-index: 10;
}
#overlay.hidden { display: none; }

#overlay h1 {
    color: #fff; font-size: 36px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    margin-bottom: 10px;
}
#overlay p {
    color: #fff; font-size: 18px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    margin-bottom: 20px;
}
#overlay .score-display {
    color: #FFD700; font-size: 24px; font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    margin-bottom: 10px;
}
#overlay .word-display {
    color: #fff; font-size: 32px; font-weight: bold;
    letter-spacing: 4px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    margin-bottom: 20px;
    font-family: monospace;
}

#overlay button:not(.diff-btn) {
    padding: 12px 32px; font-size: 20px;
    background: #e8a43a; color: #fff;
    border: 3px solid #543847; border-radius: 12px;
    cursor: pointer; font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    transition: transform 0.1s;
}
#overlay button:not(.diff-btn):hover { transform: scale(1.05); }
#overlay button:not(.diff-btn):active { transform: scale(0.95); }

/* Difficulty selector */
.diff-wrap {
    display: flex; gap: 8px;
    margin-top: 14px;
}
.diff-btn {
    padding: 8px 14px; font-size: 14px; font-weight: bold;
    color: #fff; border: 2px solid rgba(255,255,255,0.35);
    border-radius: 10px; cursor: pointer;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    transition: transform 0.1s, border-color 0.15s, background 0.15s;
    background: rgba(255,255,255,0.12);
}
.diff-btn:hover { transform: scale(1.06); }
.diff-btn:active { transform: scale(0.94); }
.diff-btn.active {
    border-color: #FFD700;
    background: rgba(255,215,0,0.25);
}
.diff-btn.easy   { color: #7fff7f; }
.diff-btn.medium { color: #ffe066; }
.diff-btn.hard   { color: #ff7f7f; }
.diff-label {
    color: rgba(255,255,255,0.6); font-size: 13px;
    margin-top: 12px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.4);
}

/* Compliment mode button */
.compliment-btn {
    margin-top: 14px;
    padding: 10px 24px; font-size: 16px; font-weight: bold;
    color: #FFD700;
    background: rgba(255,215,0,0.1);
    border: 2px solid #FFD700;
    border-radius: 12px; cursor: pointer;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    transition: transform 0.1s, background 0.15s, box-shadow 0.15s;
    box-shadow: 0 0 8px rgba(255,215,0,0.2);
}
.compliment-btn:hover {
    transform: scale(1.06);
    box-shadow: 0 0 14px rgba(255,215,0,0.4);
}
.compliment-btn:active { transform: scale(0.94); }
.compliment-btn.active {
    background: rgba(255,215,0,0.25);
    box-shadow: 0 0 18px rgba(255,215,0,0.5);
}

/* ---- Full-screen screens ---- */
.fullscreen {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    z-index: 100; cursor: pointer;
    touch-action: manipulation;
}
.fullscreen.hidden { display: none; }

/* Welcome */
#welcome {
    background: linear-gradient(135deg, #f693fa, #313c68, #110616);
}
.hearts {
    position: absolute; width: 100%; height: 100%;
    overflow: hidden; pointer-events: none;
}
.heart {
    position: absolute; font-size: 24px;
    animation: floatHeart linear infinite; opacity: 0.5;
}
@keyframes floatHeart {
    0%   { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10%  { opacity: 0.6; }
    90%  { opacity: 0.6; }
    100% { transform: translateY(-10vh) rotate(360deg); opacity: 0; }
}
.welcome-heart {
    font-size: 80px;
    animation: pulse 1.2s ease-in-out infinite;
    margin-bottom: 24px;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}
.welcome-text {
    color: #fff; font-size: 28px; font-weight: bold;
    text-align: center;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
    padding: 0 24px; line-height: 1.5;
    max-width: 360px; margin-bottom: 32px;
}
.welcome-tap {
    color: rgba(255,255,255,0.85); font-size: 18px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
    animation: tapPulse 2s ease-in-out infinite;
}
@keyframes tapPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Rules */
#rules {
        background: linear-gradient(135deg, #90641e, #2a1d0a);
}
.rules-icon {
    font-size: 60px; margin-bottom: 20px;
}
.rules-title {
    color: #FFD700; font-size: 26px; font-weight: bold;
    text-shadow: 2px 2px 6px rgba(0,0,0,0.4);
    margin-bottom: 24px;
}
.rules-text {
    color: #fff; font-size: 18px;
    text-align: center; line-height: 1.7;
    padding: 0 28px; max-width: 360px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
    margin-bottom: 16px;
}
.rules-word-preview {
    font-family: monospace;
    font-size: 30px; font-weight: bold;
    letter-spacing: 6px; color: #FFD700;
    text-shadow: 2px 2px 6px rgba(0,0,0,0.4);
    margin-bottom: 28px;
}
.rules-btn {
    padding: 14px 40px; font-size: 22px;
    background: #ff4571; color: #fff;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 14px; cursor: pointer;
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    transition: transform 0.1s;
}
.rules-btn:hover { transform: scale(1.05); }
.rules-btn:active { transform: scale(0.95); }

/* Word complete screen */
#wordComplete {
    background: linear-gradient(135deg, #000000, #57f5b0, #000000);
}
.wc-icon { font-size: 70px; margin-bottom: 16px; }
.wc-title {
    color: #FFD700; font-size: 30px; font-weight: bold;
    text-shadow: 2px 2px 6px rgba(0,0,0,0.4);
    margin-bottom: 12px;
}
.wc-word {
    font-family: monospace;
    font-size: 36px; font-weight: bold;
    letter-spacing: 6px; color: #fff;
    text-shadow: 2px 2px 6px rgba(0,0,0,0.4);
    margin-bottom: 8px;
    animation: pulse 1.5s ease-in-out infinite;
}
.wc-stats {
    color: rgba(255,255,255,0.9); font-size: 18px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
    margin-bottom: 24px;
}