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

:root {
    --color-yellow: #fbd400;
    --color-green: #b5e352;
    --color-blue: #729eeb;
    --color-purple: #bc70c4;
    --color-light-gray: #efefe6;
    --color-dark-gray: #5a594e;
    --color-text: #1a1a1a;
    --border-radius: 8px;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: #f9f9f9;
    color: var(--color-text);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding: 20px;
    margin: 0;
}

#app-container {
    width: 100%;
    max-width: 650px;
    text-align: center;
}

header h1 {
    font-family: 'Georgia', serif;
    font-weight: 300;
    font-size: 2.5rem;
    margin-bottom: 0;
}

header p {
    font-weight: 700;
    margin-top: 5px;
}

.puzzle-selector-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin: 20px 0;
}

#puzzle-selector {
    padding: 8px 12px;
    border-radius: 20px;
    border: 1px solid #ccc;
    font-size: 1rem;
}

#puzzle-difficulty-stars {
    display: flex;
    gap: 2px;
}

#puzzle-difficulty-stars .star {
    font-size: 1.2rem;
    color: #ccc;
}

#puzzle-difficulty-stars .star.filled {
    color: #f7d93d;
}

#alerts-container {
    min-height: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.alert {
    padding: 10px 20px;
    background-color: #e2e8f0;
    border-left: 4px solid #718096;
    border-radius: var(--border-radius);
    font-weight: 700;
}

#game-container {
    margin: 20px 0;
}

#grid-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.tile {
    background-color: var(--color-light-gray);
    color: var(--color-text);
    border: none;
    border-radius: var(--border-radius);
    height: 80px;
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 5px;
    line-height: 1.2;
    font-family: 'Roboto Condensed', sans-serif;
    word-break: break-word;
    hyphens: auto;
}

.tile.active {
    background-color: var(--color-dark-gray);
    color: white;
}

.completed-group {
    border-radius: var(--border-radius);
    height: 80px;
    margin-bottom: 10px;
    color: var(--color-text);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 5px;
}

.completed-group-category,
.completed-group-items {
    font-family: 'Roboto Condensed', sans-serif;
    word-break: break-word;
    hyphens: auto;
    text-align: center;
}

.completed-group-category {
    font-weight: 900;
    text-transform: uppercase;
    font-size: 1.1rem;
}

.completed-group-items {
    font-weight: 400;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.difficulty-1 { background-color: var(--color-yellow); }
.difficulty-2 { background-color: var(--color-green); }
.difficulty-3 { background-color: var(--color-blue); }
.difficulty-4 { background-color: var(--color-purple); }

#mistakes-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.mistake-dots {
    display: flex;
    gap: 5px;
}

.mistake-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-dark-gray);
}

.mistake-dots .dot.used {
    background-color: #dcdcdc;
}

#controls-container {
    display: flex;
    justify-content: center;
    gap: 15px;
}

#controls-container button {
    background: none;
    border: 2px solid var(--color-text);
    border-radius: 30px;
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
}

#controls-container button:disabled {
    border-color: #ccc;
    color: #ccc;
    cursor: not-allowed;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: white;
    padding: 20px 30px;
    border-radius: var(--border-radius);
    max-width: 500px;
    width: 90%;
    position: relative;
    line-height: 1.6;
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 2rem;
    cursor: pointer;
    color: #aaa;
}
.modal-close:hover {
    color: #333;
}

.modal-content h2 {
    margin-top: 0;
}

.modal-content .color-box {
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-right: 8px;
    vertical-align: middle;
}
.color-box.yellow { background-color: var(--color-yellow); }
.color-box.green { background-color: var(--color-green); }
.color-box.blue { background-color: var(--color-blue); }
.color-box.purple { background-color: var(--color-purple); }

#results-emojis {
    font-size: 2.5rem;
    line-height: 1;
    text-align: center;
    white-space: pre;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Animations */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake-animation {
    animation: shake 0.5s ease;
}

@keyframes correctAnimation {
    0% {
        transform: scale(1);
        background-color: var(--color-light-gray);
    }
    30% {
        transform: scale(1.1);
        background-color: #d4edda;
    }
    60% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
        background-color: var(--color-light-gray);
    }
}

.correct-animation {
    animation: correctAnimation 0.6s ease;
    z-index: 1;
}

/* Responsive Design — KEEP 4x4 */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    header h1 {
        font-size: 1.8rem;
    }

    header p {
        font-size: 0.95rem;
    }

    .puzzle-selector-container {
        flex-direction: column;
        gap: 8px;
    }

    .tile {
        height: 50px;
        font-size: 0.7rem;
        padding: 3px;
        line-height: 1.1;
    }

    .completed-group {
        height: auto;
        padding: 10px 0;
    }

    .completed-group-category {
        font-size: 0.9rem;
    }

    .completed-group-items {
        font-size: 0.75rem;
    }

    #mistakes-container {
        flex-direction: column;
        gap: 5px;
    }

    #controls-container {
        flex-direction: column;
        gap: 10px;
        margin-bottom: 20px;
    }

    #controls-container button {
        width: 100%;
        padding: 10px 0;
    }

    .modal-content {
        padding: 15px 20px;
    }

    .modal-close {
        font-size: 1.5rem;
        top: 8px;
        right: 10px;
    }

    #results-emojis {
        font-size: 2rem;
    }
}