/* --- Styles specific to QR Tool Pages --- */

/* --- Main Tool Container Layout --- */
.tool-container {
    max-width: 950px; /* Max width for the tool area */
    margin: 30px auto; /* Center the container with margin top/bottom */
    padding: 25px 30px; /* Padding inside the container */
    background-color: var(--card-bg-color);
    border-radius: 12px; /* Slightly larger radius */
    box-shadow: 0 4px 12px var(--shadow-color);
    display: grid;
    /* Two equal columns by default */
    grid-template-columns: 1fr 1fr;
    gap: 30px 40px; /* Row gap, Column gap */
    transition: background-color 0.3s ease; /* Smooth transition for dark mode */
}

/* --- Section Headings --- */
.input-section h2,
.preview-section h3, /* Target preview h3 specifically */
.options-section h3,
.download-options h3 {
    margin-top: 0; /* Remove top margin for section headings */
    margin-bottom: 18px;
    color: var(--heading-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    font-size: 1.4rem; /* Slightly larger heading */
    display: flex; /* Align icon and text */
    align-items: center;
    gap: 10px; /* Space between icon and text */
}
.download-options h3 {
     border-bottom: none; /* No border for download heading */
     margin-bottom: 10px;
     justify-content: center; /* Center download heading */
     font-size: 1.2rem;
}

/* Tool Description Paragraph */
.tool-description {
    font-size: 0.95rem;
    color: var(--text-color-secondary);
    margin-bottom: 20px;
    padding: 12px 15px;
    background-color: rgba(var(--primary-color-rgb, 74, 144, 226), 0.08); /* Use RGB or fallback */
    border-left: 4px solid var(--primary-color);
    border-radius: 4px;
    line-height: 1.5;
}
/* Add primary color RGB to :root in style.css if needed */
/* :root { --primary-color-rgb: 74, 144, 226; } */
/* body.dark-mode { --primary-color-rgb: 88, 166, 255; } */
body.dark-mode .tool-description {
     background-color: rgba(var(--primary-color-rgb, 88, 166, 255), 0.1);
     border-left-color: var(--primary-color);
     color: var(--text-color);
}

/* --- Input Section & Form Elements --- */
.input-section {
    /* Styles for the left column */
    padding-right: 10px; /* Add some space to the right */
}

.form-group {
    margin-bottom: 18px; /* Space below each form group */
}

.input-section label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600; /* Slightly bolder label */
    font-size: 0.9rem;
    color: var(--text-color-secondary);
}

/* Common styles for text-based inputs and textarea */
.form-control,
.input-section input[type="number"],
.input-section input[type="text"],
.input-section input[type="url"],
.input-section textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--input-bg-color);
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.5;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-control:focus,
.input-section input:focus,
.input-section textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb, 74, 144, 226), 0.25);
}
body.dark-mode .form-control:focus,
body.dark-mode .input-section input:focus,
body.dark-mode .input-section textarea:focus {
     box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb, 88, 166, 255), 0.3);
}

/* Specific style for file input container */
.input-section input[type="file"] {
    width: 100%;
    padding: 8px 10px; /* Adjust padding */
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--input-bg-color);
    color: var(--text-color-secondary); /* Text like 'No file chosen' */
    font-size: 0.9rem;
    cursor: pointer; /* Indicate it's clickable */
}
/* Styling the file input button (browser specific) */
.input-section input[type="file"]::file-selector-button {
    background-color: var(--secondary-button-bg);
    color: var(--secondary-button-text);
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    margin-right: 10px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background-color 0.2s ease;
}
.input-section input[type="file"]::file-selector-button:hover {
   background-color: darken(var(--secondary-button-bg), 10%); /* Use a function if using SASS/LESS, otherwise hardcode */
    filter: brightness(90%); /* Simple hover effect */
}
body.dark-mode .input-section input[type="file"]::file-selector-button {
   background-color: var(--secondary-button-bg);
   color: var(--secondary-button-text);
}
 body.dark-mode .input-section input[type="file"]::file-selector-button:hover {
     filter: brightness(115%);
 }


/* --- Customization Options Section --- */
.options-section {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px dashed var(--border-color); /* Dashed separator */
}

.option-group {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px; /* Space between label and input */
    flex-wrap: wrap; /* Allow wrapping */
}

.option-group label {
    margin-bottom: 0; /* Remove default margin */
    flex-shrink: 0;
    color: var(--text-color); /* Standard text color */
    font-weight: 500;
    font-size: 0.9rem;
}

.option-group input[type="color"] {
    width: 35px; /* Compact size */
    height: 35px;
    padding: 2px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    cursor: pointer;
    background-color: var(--input-bg-color);
    vertical-align: middle;
    margin-bottom: 0;
    /* Remove browser default appearance if needed */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}
/* Style the color picker indicator */
.option-group input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}
.option-group input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}
.option-group input[type="color"]::-moz-color-swatch {
    border: none;
    border-radius: 4px;
}


.option-group small { /* Style for '(Coming Soon)' text */
     font-size: 0.8rem;
     color: var(--text-color-secondary);
     margin-left: 5px;
}

.option-group.logo-option[title] { /* Style for disabled look */
     opacity: 0.6;
     cursor: not-allowed;
}

/* --- Action Area (Button, Loading, Error) --- */
.action-area {
    margin-top: 25px;
    text-align: center; /* Center button and indicators */
}

#generate-btn {
    width: auto; /* Don't force full width */
    padding: 12px 30px; /* Larger padding */
    font-size: 1.1rem;
    min-width: 200px; /* Ensure decent width */
}
#generate-btn i {
     margin-right: 8px;
}

/* Loading Indicator */
.loading-indicator {
    margin-top: 15px;
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 500;
    display: flex; /* Use flex to center icon and text */
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.loading-indicator i.fa-spin {
    /* Animation is handled by Font Awesome class */
    font-size: 1.2rem;
}

/* Error Message Box */
.error-message {
    margin-top: 15px;
    color: var(--error-color);
    background-color: var(--error-bg-color);
    padding: 12px 15px;
    border-radius: 6px;
    border: 1px solid rgba(var(--error-color-rgb, 220, 53, 69), 0.5); /* Use RGB or fallback */
    font-weight: 500;
    font-size: 0.95rem;
    text-align: left; /* Align text left for readability */
}
/* Add error color RGB to :root in style.css */
/* :root { --error-color-rgb: 220, 53, 69; } */
/* body.dark-mode { --error-color-rgb: 248, 81, 73; } */
body.dark-mode .error-message {
     border-color: rgba(var(--error-color-rgb, 248, 81, 73), 0.5);
}


/* --- Preview Section --- */
.preview-section {
    /* Styles for the right column */
    display: flex;
    flex-direction: column;
    align-items: center; /* Center items vertically */
    text-align: center;
}

.preview-box {
    width: 100%;
    max-width: 320px; /* Max width for QR code area */
    min-height: 320px; /* Ensure space even when empty */
    margin: 10px auto 25px auto; /* Center box and add margin */
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    background-color: var(--background-color); /* Slightly different background */
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative; /* For potential overlays later */
    overflow: hidden; /* Ensure QR doesn't overflow padding */
}
body.dark-mode .preview-box {
     background-color: var(--input-bg-color); /* Darker background in dark mode */
}


/* Placeholder Styling */
#qr-code-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column; /* Stack icon and text */
    align-items: center;
    justify-content: center;
    color: var(--text-color-secondary);
    font-size: 1rem;
    padding: 20px; /* Padding inside placeholder */
}
#qr-code-placeholder .placeholder-icon {
    font-size: 4rem; /* Large icon */
    margin-bottom: 15px;
    opacity: 0.5;
}

/* Generated QR Code Image */
#qr-code-result {
    display: block; /* Remove extra space below image */
    max-width: 100%; /* Ensure it fits within preview-box */
    height: auto;
    /* Add a subtle border if needed */
    /* border: 1px solid var(--border-color); */
    /* Background MUST remain white (or light color) for QR readability, even in dark mode */
    background-color: white;
    padding: 5px; /* Small padding around the QR code inside the img frame if needed */
    border-radius: 4px;
}

/* --- Download Options --- */
.download-options {
    margin-top: auto; /* Push download options to the bottom of the column */
    width: 100%;
    padding-top: 20px;
    border-top: 1px dashed var(--border-color); /* Separator line */
}

.download-btn {
    min-width: 90px; /* Slightly wider download buttons */
    margin: 5px 8px; /* Spacing around buttons */
    padding: 8px 15px; /* Adjust padding */
    font-size: 0.9rem;
    background-color: var(--secondary-button-bg);
    color: var(--secondary-button-text);
}
.download-btn i {
     margin-right: 6px;
}
.download-btn:disabled {
     opacity: 0.5;
     cursor: not-allowed;
}
.download-btn:not(:disabled):hover {
    filter: brightness(90%); /* Simple hover effect */
}
body.dark-mode .download-btn:not(:disabled):hover {
     filter: brightness(115%);
}


/* --- Responsiveness --- */

/* Medium screens (Tablets) */
@media (max-width: 992px) {
    .tool-container {
        max-width: 720px; /* Adjust max width */
        gap: 25px 30px; /* Reduce gap */
    }
    .input-section h2,
    .preview-section h3,
    .options-section h3 {
         font-size: 1.3rem;
    }
}

/* Small screens (Mobile) */
@media (max-width: 768px) {
    .tool-container {
        /* Stack columns */
        grid-template-columns: 1fr;
        padding: 20px;
        margin: 20px auto; /* Reduce vertical margin */
        gap: 30px; /* Single gap value for rows */
    }

    .input-section {
        padding-right: 0; /* Remove extra padding */
        order: 2; /* Input section below preview on mobile */
    }

    .preview-section {
        order: 1; /* Preview section first on mobile */
    }

    .preview-box {
        max-width: 280px; /* Adjust QR preview size */
        min-height: 280px;
    }
    #qr-code-placeholder .placeholder-icon {
        font-size: 3rem;
    }

    .download-options {
         margin-top: 25px; /* Add margin when stacked */
    }

     .input-section h2,
     .preview-section h3,
     .options-section h3 {
         font-size: 1.2rem; /* Smaller headings */
         margin-bottom: 15px;
         padding-bottom: 10px;
     }
     .download-options h3 {
         font-size: 1.1rem;
     }

     #generate-btn {
         padding: 10px 25px;
         font-size: 1rem;
         min-width: 180px;
     }
     .download-btn {
        min-width: 80px;
        padding: 7px 12px;
        font-size: 0.85rem;
        margin: 4px;
     }
}

/* Extra small screens */
@media (max-width: 480px) {
     .tool-container {
         padding: 15px;
         margin: 15px auto;
     }
     .preview-box {
        max-width: 240px;
        min-height: 240px;
    }
     #qr-code-placeholder .placeholder-icon {
        font-size: 2.5rem;
    }
     #qr-code-placeholder span {
         font-size: 0.9rem;
     }

     .form-control,
     .input-section input,
     .input-section textarea {
        padding: 10px 12px;
        font-size: 0.95rem;
     }

     #generate-btn {
         width: 100%; /* Full width button on very small screens */
         min-width: unset;
     }
     .download-btn {
         width: calc(50% - 10px); /* Two buttons per row roughly */
         min-width: unset;
     }
}