/* Importar fuentes de Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&family=Montserrat:wght@600&display=swap');

/* Variables de color para mantener la consistencia */
:root {
    --color-primary: #4A90E2;
    --color-secondary: #50E3C2;
    --color-background: #F9F9F9;
    --color-white: #FFFFFF;
    --color-text: #333333;
    --color-success: #27AE60;
    --color-error: #E74C3C;
    --color-border: #E0E0E0;
    --transition-speed: 0.3s;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
}

body {
    background-color: var(--color-background);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: var(--color-white);
    max-width: 800px;
    width: 100%;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: box-shadow var(--transition-speed);
}

.container:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2em;
    color: var(--color-primary);
    margin-bottom: 10px;
}

#score {
    font-size: 1.2em;
    color: var(--color-text);
}

#instructions {
    margin-bottom: 30px;
    line-height: 1.6;
}

#instructions h2 {
    font-size: 1.5em;
    color: var(--color-primary);
    margin-bottom: 10px;
}

#vectors {
    margin-bottom: 30px;
}

#vectors h2 {
    font-size: 1.5em;
    color: var(--color-primary);
    margin-bottom: 10px;
}

#vectorList p {
    font-size: 1.1em;
    margin-bottom: 5px;
}

#response {
    margin-bottom: 30px;
}

#response h2 {
    font-size: 1.5em;
    color: var(--color-primary);
    margin-bottom: 10px;
}

#response p {
    font-size: 1.1em;
    margin-bottom: 15px;
}

#response input {
    width: 125px;
    padding: 8px;
    font-size: 1em;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin: 0 5px;
    transition: border-color var(--transition-speed);
}

#response input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 5px rgba(74, 144, 226, 0.5);
}

#submitBtn, #nextBtn {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
    padding: 12px 25px;
    font-size: 1em;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
    box-shadow: 0 5px 15px rgba(74, 144, 226, 0.3);
    margin-top: 10px;
    margin-right: 10px;
}

#submitBtn:hover, #nextBtn:hover {
    background-color: #357ABD; /* Tonos más oscuros para el hover */
    transform: translateY(-2px);
}

#submitBtn:active, #nextBtn:active {
    transform: translateY(0);
}

#submitBtn:disabled, #nextBtn:disabled {
    background-color: var(--color-border);
    cursor: not-allowed;
    box-shadow: none;
}

.hidden {
    display: none;
}

#feedback {
    text-align: center;
    min-height: 80px;
}

#feedbackMessage p {
    margin-bottom: 10px;
    font-size: 1.1em;
}

.correct {
    color: var(--color-success);
    font-weight: 500;
}

.incorrect {
    color: var(--color-error);
    font-weight: 500;
}

/* Responsividad */
@media (max-width: 600px) {
    .container {
        padding: 30px 20px;
    }

    header h1 {
        font-size: 1.8em;
    }

    #instructions h2, #vectors h2, #response h2 {
        font-size: 1.3em;
    }

    #response input {
        width: 80px;
    }

    #submitBtn, #nextBtn {
        width: 100%;
        margin-right: 0;
        margin-bottom: 10px;
    }
}