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


body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #f9fdf3, #e0e7ee);
    color: #333333;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    text-align: center;
}


h1 {
    font-size: 3rem;
    color: #6b7c9a;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #4a6b8a;
}

.intro-container,
.info-container {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px;
    width: 100%;
    max-width: 900px;
    box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.2);
    margin-top: 1.5rem;
    margin-bottom: 2rem;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.intro-container p,
.info-container p {
    color: #555555;
    font-size: 1.1rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.intro-container:hover,
.info-container:hover {
    transform: translateY(-8px);
    box-shadow: 0px 15px 40px rgba(0, 0, 0, 0.3);
}

button {
    background-color: #6b7993;
    border: none;
    color: white;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    margin: 8px;
    transition: background-color 0.3s, transform 0.2s;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.2);
}

button:hover {
    background-color: #8d98bb;
    transform: scale(1.05);
}

button:active {
    transform: scale(0.98);
}

#exercise-details {
    background-color: #d9e8f3;
    border-radius: 20px;
    padding: 1rem;
}

.buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 3rem;
}

#results {
    background-color: rgba(255, 255, 255, 0.2);
    width: 12rem;
    display: none;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    font-size: 1.5rem;
    color: #444444;
    border-radius: 12px;
    margin: 1rem auto;
    padding: 10px;
    box-shadow: 0px 5px 20px rgba(0, 0, 0, 0.2);
}

.predicting #results {
    display: flex;
}

.training #canvas,
.predicting #canvas {
    display: block;
    border-radius: 20px;
    box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

#exercise-canvas {
    image-rendering: auto;
}

#training {
    color: #4a6b8a;
    font-size: 1.3rem;
    margin-top: 1rem;
    text-shadow: 0px 2px 4px rgba(0, 0, 0, 0.1);
}


.display-sampling button {
    background-color: #a4c8e1;
    color: #ffffff;
}

.display-sampling button:hover {
    background-color: #514b6f;

}

.predicting #exercise-container h3 {
    font-size: 1.4rem;
    color: #ffffff;
    margin-bottom: 8px;
}

.loading #state {
    display: flex;
}


#prediction {
    display: flex;
    align-items: center;
}


.exercise-btn {
    padding: 10px;
    font-size: 1rem;
    cursor: pointer;
    color: #ffffff;
    background-color: #3d3256;
    border: none;
    border-radius: 6px;
    transition: background-color 0.3s;
    box-shadow: 0px 3px 10px rgba(0, 0, 0, 0.2);
    width: 100%;
}

.exercise-btn:hover {
    background-color: #595284;

}


.canvas-holder {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    width: 100%;
    max-width: 1200px;
    margin: 20px auto;
    gap: 20px;
}


.video-container,
.exercise-container,
#exercise-container {
    flex: 1;
    margin: 0 10px;
}


#canvas,
#exercise-canvas {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.2);
}

#exercise-canvas {
    background-color: #d9e8f3;
}


#exercise-container h3 {
    color: #ffffff;
    font-size: 1.5rem;
    margin-bottom: 12px;
}

#exercise-buttons {
    display: flex;
    flex-direction: row;
    gap: 12px;
}

.canvas-holder {
    display: flex;
    align-items: center;
}

.hidden {
    display: none;
}

.loading .display-loading {
    display: block;
}

.intro .display-intro {
    display: block;
}

.info .display-info {
    display: block;
}

.sampling .display-sampling {
    display: block;
}

.training .display-training {
    display: block;
}

.predicting .display-predicting {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}