/* Custom primary color inspired by the green on the Upay website */
:root {
    --primary-green: #00CC99; /* The signature Upay green */
    --accent-dark-green: #00997A; /* Darker shade for hover/accents */
    --light-bg: #f8f9fa;     /* Very light gray background for contrast */
    --card-bg: #ffffff;      /* White card background */
    --text-color: #343a40;   /* Dark gray text */
    --border-color: #e9ecef; /* Light border */
}

#crypto-qr-generator-container {
    /* Ensures the container fits nicely into the content area */
    max-width: 800px;
    width: 100%;
    margin: 20px auto;
    padding: 30px;
    /* Clean White Card Look */
    background: var(--card-bg); 
    border-radius: 10px;
    /* Softer shadow to lift the card */
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); 
    color: var(--text-color);
    box-sizing: border-box;
    min-width: 300px; 
}

#crypto-qr-generator-container h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-green); /* Green Title */
    text-shadow: none; 
}

#crypto-qr-generator-container fieldset {
    /* Subtle separation for inputs */
    border: 1px solid var(--border-color); 
    border-radius: 8px;
    padding: 15px;
    margin: 20px 0;
    background: var(--light-bg); 
    backdrop-filter: none; 
}

#crypto-qr-generator-container fieldset legend {
    font-weight: 600;
    font-size: 16px;
    padding: 5px 15px;
    /* Green Accent for the legend */
    background: var(--primary-green);
    color: white; 
    border-radius: 20px;
    margin-left: 10px;
}

#crypto-qr-generator-container form label {
    display: block;
    margin: 15px 0 5px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-color);
}

#crypto-qr-generator-container form input[type="number"], 
#crypto-qr-generator-container form input[type="text"], 
#crypto-qr-generator-container form input[type="color"],
#crypto-qr-generator-container form select,
#crypto-qr-generator-container form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ced4da; 
    border-radius: 6px;
    box-sizing: border-box;
    font-size: 16px;
    background: white; 
    color: var(--text-color);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

#crypto-qr-generator-container form input:focus,
#crypto-qr-generator-container form select:focus,
#crypto-qr-generator-container form textarea:focus {
    outline: none;
    /* Green focus glow */
    border-color: var(--primary-green); 
    box-shadow: 0 0 0 0.2rem rgba(0, 204, 153, 0.25);
    transform: none; 
}

#crypto-qr-generator-container form textarea {
    min-height: 80px;
    resize: vertical;
    font-family: inherit;
}

/* Scoped buttons */
#crypto-qr-generator-container button {
    display: block;
    width: 100%;
    margin: 15px 0;
    padding: 12px 20px;
    /* Default button green */
    background: var(--primary-green); 
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: none;
    letter-spacing: normal;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#crypto-qr-generator-container button:hover {
    background: var(--accent-dark-green); /* Darker green on hover */
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

#crypto-qr-generator-container button:active {
    transform: translateY(0);
}

/* Generate QR button (Main action) */
#crypto-qr-generator-container #generate-qr {
    /* A slightly more vibrant gradient for the main action */
    background: linear-gradient(45deg, var(--primary-green), #00A380); 
    font-size: 18px;
    padding: 16px;
    font-weight: bold;
    border-radius: 8px;
}

#crypto-qr-generator-container #generate-qr:hover {
    background: linear-gradient(45deg, #00A380, var(--primary-green));
    box-shadow: 0 4px 10px rgba(0, 204, 153, 0.4);
}

/* --- QR Display Area Styles --- */

#qr-display-area {
    margin-top: 30px;
    text-align: center;
    padding: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

#qr-display-area h3 {
    color: var(--primary-green);
    margin-bottom: 15px;
    font-size: 22px;
}

#qr-code-container {
    padding: 20px 0;
}

/* Style for the security notice */
#security-notice {
    margin-top: 30px;
    padding: 20px;
    /* Standard warning yellow for safety messages */
    border: 1px solid #ffc107; 
    background-color: #fff3cd;
    border-radius: 8px;
    color: #856404;
}

#security-notice h4 {
    color: #856404;
    margin-top: 0;
    border-bottom: 1px solid #ffc107;
    padding-bottom: 10px;
    margin-bottom: 10px;
    font-size: 16px;
}

#security-notice ul {
    list-style-type: disc;
    padding-left: 20px;
    margin: 0;
    text-align: left;
    font-size: 14px;
}

#security-notice li {
    margin-bottom: 5px;
}

/* Action buttons in QR display area */
#qr-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

#qr-actions button {
    width: 50%;
    padding: 10px;
    font-size: 14px;
    background: var(--primary-green);
    border-radius: 6px;
    text-transform: none;
}

#qr-actions button:hover {
    background: var(--accent-dark-green);
}

/* Style for info text under QR */
#qr-info p {
    margin: 5px 0;
    font-size: 14px;
    color: #6c757d;
    word-break: break-all;
}

/* --- Mobile Responsiveness --- */
@media (max-width: 600px) {
    #crypto-qr-generator-container {
        padding: 15px;
        margin: 10px auto;
    }

    #crypto-qr-generator-container h2 {
        font-size: 24px;
    }

    #crypto-qr-generator-container button {
        padding: 12px 15px;
        font-size: 14px;
    }

    #crypto-qr-generator-container #generate-qr {
        padding: 14px;
        font-size: 16px;
    }
    
    /* Stack action buttons on small screens */
    #qr-actions {
        flex-direction: column;
    }

    #qr-actions button {
        width: 100%;
    }
}