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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 1rem;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    position: relative;
}

.settings-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.setting-group label {
    font-weight: bold;
    color: #333;
}

.setting-group input,
.setting-group select {
    padding: 0.5rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.instruction-wrapper {
    margin-bottom: 1.5rem;
    text-align: left;
}

.instruction-toggle {
    background: #f1c40f;
    color: #222;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    font-size: 1rem;
    cursor: pointer;
    margin-bottom: 0.5rem;
    transition: background 0.2s;
}

.instruction-toggle:hover {
    background: #d4ac0d;
}

.instruction-content {
    background: #fef9e7;
    border: 1px solid #f1c40f;
    border-radius: 10px;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    color: #222;
    margin-top: 0.5rem;
}

.hidden {
    display: none !important;
}

/* ---------- Блок для показа команд ---------- */
#move-display {
    margin: 1.5rem 0 1rem 0;
    min-height: 4.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.8rem;
    font-weight: bold;
    color: #222;
    background: linear-gradient(90deg, #ffe259 0%, #ffa751 100%);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(247, 151, 30, 0.09);
    text-align: center;
    letter-spacing: 2px;
    transition: background 0.2s, color 0.2s;
    width: 80%;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    opacity: 1;
    visibility: visible;
    min-width: 180px;
}

#move-display.empty {
    background: transparent !important;
    color: transparent !important;
    box-shadow: none !important;
    opacity: 0;
    visibility: hidden;
}

/* ---------- Конец блока команд ---------- */

.grid {
    display: grid;
    gap: 2px;
    background: #333;
    border-radius: 10px;
    margin: 0 auto;
    max-width: min(80vw, 400px);
    aspect-ratio: 1;
}

.grid-cell {
    background: #fff;
    border: 1px solid #ddd;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    min-height: 44px;
}

.grid-cell:hover {
    background: #e3f2fd;
}

.grid-cell.selected {
    background: #2196f3;
    color: white;
}

.grid-cell.correct {
    background: #4caf50;
    color: white;
}

.grid-cell.wrong {
    background: #f44336;
    color: white;
}

button {
    background: #2196f3;
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 44px;
}

button:hover {
    background: #1976d2;
    transform: translateY(-2px);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    max-width: 90vw;
    max-height: 90vh;
}

#countdown-overlay {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    margin: auto;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: #222;
    background: rgba(255,255,255,0.75);
    transition: opacity 0.3s;
    pointer-events: none;
    width: 100%;
    height: 100%;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
        margin: 0.5rem;
    }
    .settings-panel {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    .grid {
        max-width: 90vw;
    }
    h1 {
        font-size: 1.5rem;
        text-align: center;
    }
    .instruction-content {
        font-size: 0.95rem;
        padding: 0.8rem 1rem;
    }
    #move-display {
        font-size: 2rem;
        min-height: 3.2rem;
    }
}

@media (max-width: 480px) {
    .grid-cell {
        min-height: 50px;
        font-size: 1rem;
    }
    button {
        width: 100%;
        margin: 0.5rem 0;
    }
    #move-display {
        font-size: 1.3rem;
        min-height: 2.2rem;
        padding: 0.5rem 0.3rem;
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    .container {
        padding: 0.5rem;
    }
    .settings-panel {
        grid-template-columns: repeat(2, 1fr);
    }
}