/* Base Styles */
body {
    font-family: 'Poppins', sans-serif;
    /* New vibrant gradient - Teal/Cyan theme */
    background: linear-gradient(135deg, #69f0ae 0%, #18ffff 100%);
    color: #212121; /* Darker text for better contrast on light bg */
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Align top */
    min-height: 100vh;
}

.container {
    background-color: rgba(255, 255, 255, 0.92); /* Slightly more opaque */
    padding: 30px 40px;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.4);
    max-width: 650px;
    width: 90%;
    text-align: center;
    margin-top: 30px;
}

header h1 {
    font-size: 2.2em;
    margin-bottom: 10px;
    font-weight: 700;
    /* New accent color - Teal */
    color: #00796b;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

header p {
    font-size: 1.1em;
    margin-bottom: 30px;
    color: #424242; /* Slightly darker grey */
}

/* Form Styling */
#quiz-setup-form {
    text-align: left;
}

.form-section {
    background-color: #e0f7fa; /* Light cyan background for section */
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    border: 1px solid #b2ebf2; /* Light cyan border */
}

.form-section h2 {
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 1.5em;
    color: #006064; /* Darker cyan for heading */
    border-bottom: 2px solid #80deea; /* Cyan border bottom */
    padding-bottom: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #004d40; /* Dark teal for labels */
}

.form-group input[type="number"] {
    width: calc(100% - 24px); /* Full width minus padding */
    padding: 10px 12px;
    border: 1px solid #80cbc4; /* Teal border */
    border-radius: 5px;
    font-size: 1em;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    background-color: #ffffff;
}

.form-group input[type="number"]:focus {
    border-color: #00796b; /* Darker teal on focus */
    outline: 0;
    /* New focus ring color */
    box-shadow: 0 0 0 0.2rem rgba(0, 121, 107, 0.25);
}

/* Subject Selection Styling - REMOVED */
/* .subject-selection, .checkbox-label, .checkbox-custom rules are removed */

/* Error Message Styling */
.error-message {
    color: #c62828; /* Darker red for errors */
    font-size: 0.85em;
    display: block;
    margin-top: 5px;
    min-height: 1.2em;
}

/* Input with error */
input.input-error {
    border-color: #c62828; /* Darker red */
}
input.input-error:focus {
     box-shadow: 0 0 0 0.2rem rgba(198, 40, 40, 0.25);
}
/* Removed subject-selection.input-error */

/* Action Buttons */
.form-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #b2ebf2; /* Light cyan border top */
}

.button {
    padding: 12px 25px;
    border: none;
    border-radius: 25px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.primary-button {
    /* New primary action gradient - Teal/Green */
    background: linear-gradient(45deg, #26a69a, #00796b);
    color: white;
}

.primary-button:hover {
    background: linear-gradient(45deg, #00897b, #004d40); /* Darker shades */
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.secondary-button {
    background-color: #546e7a; /* Blue-grey for secondary */
    color: white;
}

.secondary-button:hover {
    background-color: #455a64;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

/* Responsive Adjustments (mostly unchanged from see_setup) */
@media (max-width: 768px) {
    .container {
        padding: 25px 20px;
    }
    header h1 {
        font-size: 1.8em;
    }
    /* Removed subject-selection responsive rule */
    .form-actions {
        flex-direction: column-reverse;
        gap: 15px;
        align-items: center;
    }
    .button {
        width: 80%;
    }
}