/**
 * Frontend styles for the Product Link Comparator.
 * Mobile-first, responsive design with CSS variables for theming.
 */

/* CSS Variables (defaults, overridden by settings) */
:root {
    --plc-color-primary: #007bff;
    --plc-color-secondary: #6c757d;
    --plc-color-background: #ffffff;
    --plc-color-accent: #28a745;
    --plc-color-text: #212529;
    --plc-modal-backdrop: rgba(0, 0, 0, 0.5);
    --plc-border-radius: 4px;
    --plc-spacing: 20px;
    --plc-font-size: 16px;
}

/* Modal Overlay */
.plc-comparator {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
    font-size: var(--plc-font-size);
    line-height: 1.5;
}

.plc-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--plc-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--plc-spacing);
}

.plc-modal-content {
    background: var(--plc-color-background);
    border-radius: var(--plc-border-radius);
    padding: calc(var(--plc-spacing) * 1.5);
    width: 100%;
    max-width: 800px;
    height: auto;
    max-height: 90vh;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

/* Close Button */
.plc-close {
    position: absolute;
    top: var(--plc-spacing);
    right: var(--plc-spacing);
    background: transparent;
    border: none;
    font-size: 24px;
    line-height: 1;
    padding: 0;
    cursor: pointer;
    color: var(--plc-color-secondary);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.plc-close:hover {
    color: var(--plc-color-text);
}

/* Title */
.plc-title {
    margin: 0 0 calc(var(--plc-spacing) * 1.5);
    color: var(--plc-color-text);
    font-size: 1.5em;
    font-weight: 600;
    text-align: center;
    padding-right: 40px; /* Space for close button */
}

/* Categories */
.plc-categories {
    display: flex;
    gap: calc(var(--plc-spacing) * 0.5);
    margin: calc(var(--plc-spacing) * 0.75) 0;
    overflow-x: auto;
    padding: calc(var(--plc-spacing) * 0.25);
    -webkit-overflow-scrolling: touch;
    /* Ensure no cropping of focus rings or shadows */
    margin-left: -var(--plc-spacing);
    margin-right: -var(--plc-spacing);
    padding-left: var(--plc-spacing);
    padding-right: var(--plc-spacing);
}

.plc-comparator .plc-category-tab {
    background: transparent !important;
    border: 1px solid var(--plc-color-primary) !important;
    color: var(--plc-color-primary) !important;
    padding: calc(var(--plc-spacing) * 0.5) var(--plc-spacing) !important;
    border-radius: var(--plc-border-radius) !important;
    cursor: pointer !important;
    white-space: nowrap !important;
    transition: all 0.2s !important;
    text-align: center !important;
    line-height: normal !important;
    height: auto !important;
    min-height: unset !important;
    text-transform: none !important;
    font-weight: normal !important;
    box-shadow: none !important;
    margin: 0 !important;
}

.plc-comparator .plc-category-tab:hover {
    background: rgba(0, 123, 255, 0.1) !important;
}

.plc-comparator .plc-category-tab.active {
    background: var(--plc-color-primary) !important;
    color: white !important;
}

/* Launch button style */
.plc-launch-comparator.plc-category-tab {
    display: inline-block;
    background: var(--plc-color-primary);
    color: white;
    border: 1px solid var(--plc-color-primary);
    padding: calc(var(--plc-spacing) * 0.5) calc(var(--plc-spacing) * 1.5);
    border-radius: var(--plc-border-radius);
    cursor: pointer;
    font-size: 1em;
    line-height: 1.5;
    text-decoration: none;
    transition: all 0.2s;
    margin: 0.25em;
}

button.plc-launch-comparator:hover {
    background: color-mix(in srgb, var(--plc-color-primary) 90%, black);
    border-color: color-mix(in srgb, var(--plc-color-primary) 90%, black);
}

/* Message and Result shared styles */
.plc-message,
.plc-result {
    --title-line-height: 1.2;
    --title-lines: 2;
    --title-font-size: 1.3em;
    --subtitle-height: 1.5em;
    --button-height: 2.5em;
    --vertical-gap: calc(var(--plc-spacing) * 0.5);

    text-align: center;
    margin: calc(var(--plc-spacing) * 1.25) 0;
    /* Exact height calculation */
    min-height: calc(
        var(--subtitle-height) + /* Subtitle */
        (var(--title-line-height) * var(--title-lines) * var(--title-font-size)) + /* Title 2 lines */
        var(--button-height) + /* Button */
        (var(--vertical-gap) * 2) /* Gaps between elements */
    );
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.plc-message {
    color: var(--plc-color-text);
    font-size: 1.1em;
    max-width: 80%; /* Keep message text nicely centered */
}

.plc-message.plc-error {
    color: #dc3545;
}

/* Result specific styles */
.plc-result {
    /* All base styles are shared with .plc-message above */
}

.plc-product-subtitle {
    color: var(--plc-color-secondary);
    margin-bottom: calc(var(--plc-spacing) * 0.5);
}

.plc-product-title {
    color: var(--plc-color-text);
    font-size: 1.3em;
    margin: 0 0 var(--plc-spacing);
    font-weight: 600;
    min-height: calc(1.2em * 2); /* 2 rows minimum height */
    line-height: 1.2;
    display: -webkit-box;
    -webkit-line-clamp: 2; /* Show 2 lines by default */
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    /* Allow growing beyond 2 lines if needed */
    max-height: none;
}

.plc-buy-button {
    background: var(--plc-color-accent);
    color: white;
    border: none;
    padding: calc(var(--plc-spacing) * 0.75) calc(var(--plc-spacing) * 1.5);
    border-radius: var(--plc-border-radius);
    font-size: 1.1em;
    cursor: pointer;
    transition: background-color 0.2s;
}

.plc-buy-button:hover {
    background: color-mix(in srgb, var(--plc-color-accent) 90%, black);
}

/* Properties */
.plc-properties {
    margin-top: calc(var(--plc-spacing) * 1.25);
    overflow-y: auto;
    /* Leave space for result section */
    max-height: calc(100vh - 400px);
    padding-right: calc(var(--plc-spacing) * 0.5);
    /* Nice scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--plc-color-secondary) transparent;
    /* Narrower container for sliders */
    width: 80%;
    margin-left: auto;
    margin-right: auto;
}

.plc-properties::-webkit-scrollbar {
    width: 6px;
}

.plc-properties::-webkit-scrollbar-track {
    background: transparent;
}

.plc-properties::-webkit-scrollbar-thumb {
    background-color: var(--plc-color-secondary);
    border-radius: 3px;
}

.plc-comparator .plc-property {
    margin-bottom: var(--plc-spacing) !important;
    /* Add padding to accommodate slider thumb */
    padding: 0 10px !important;
    border: none !important;
    background: none !important;
}

.plc-comparator .plc-property-name {
    display: block !important;
    margin-bottom: calc(var(--plc-spacing) * 0.5) !important;
    color: var(--plc-color-text) !important;
    font-weight: 500 !important;
    /* Pull label back to align with other text */
    margin-left: -10px !important;
    font-size: 1em !important;
    line-height: 1.5 !important;
    text-transform: none !important;
}

/* Custom Slider Styling */
.plc-comparator .plc-slider {
    -webkit-appearance: none !important;
    appearance: none !important;
    width: 100% !important;
    height: 6px !important;
    background: #e9ecef !important;
    border-radius: 3px !important;
    outline: none !important;
    margin: calc(var(--plc-spacing) * 0.5) 0 !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
}

.plc-comparator .plc-slider::-webkit-slider-thumb {
    -webkit-appearance: none !important;
    appearance: none !important;
    width: 20px !important;
    height: 20px !important;
    background: var(--plc-color-primary) !important;
    border-radius: 50% !important;
    cursor: pointer !important;
    transition: background-color 0.2s !important;
    border: none !important;
    box-shadow: none !important;
    margin-top: -7px !important; /* (20px - 6px) / 2 */
}

.plc-comparator .plc-slider::-moz-range-thumb {
    width: 20px !important;
    height: 20px !important;
    background: var(--plc-color-primary) !important;
    border-radius: 50% !important;
    cursor: pointer !important;
    border: none !important;
    transition: background-color 0.2s !important;
    box-shadow: none !important;
}

.plc-comparator .plc-slider::-webkit-slider-thumb:hover {
    background: color-mix(in srgb, var(--plc-color-primary) 90%, black) !important;
}

.plc-comparator .plc-slider::-moz-range-thumb:hover {
    background: color-mix(in srgb, var(--plc-color-primary) 90%, black) !important;
}

/* Track styling */
.plc-comparator .plc-slider::-webkit-slider-runnable-track {
    height: 6px !important;
    border: none !important;
    border-radius: 3px !important;
    background: #e9ecef !important;
}

.plc-comparator .plc-slider::-moz-range-track {
    height: 6px !important;
    border: none !important;
    border-radius: 3px !important;
    background: #e9ecef !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --plc-spacing: 16px;
        --plc-font-size: 14px;
    }

    .plc-modal {
        padding: 0;
        align-items: flex-start;
    }

    .plc-modal-content {
        padding: var(--plc-spacing);
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
        display: flex;
        flex-direction: column;
    }

    .plc-title {
        font-size: 1.2em;
        margin-bottom: var(--plc-spacing);
    }

    .plc-category-tab {
        padding: calc(var(--plc-spacing) * 0.4) calc(var(--plc-spacing) * 0.8);
        font-size: 0.9em;
    }

    .plc-message,
    .plc-result {
        font-size: 0.95em;
        margin: var(--plc-spacing) 0;
        min-height: calc(
            var(--subtitle-height) +
            (var(--title-line-height) * var(--title-lines) * var(--title-font-size)) +
            var(--button-height) +
            (var(--vertical-gap) * 1.5)
        );
    }

    .plc-product-title {
        font-size: 1.1em;
    }

    .plc-properties {
        flex: 1;
        margin-top: var(--plc-spacing);
        max-height: none;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .plc-property {
        margin-bottom: calc(var(--plc-spacing) * 0.75);
    }

    .plc-property-name {
        font-size: 0.9em;
        margin-bottom: calc(var(--plc-spacing) * 0.3);
    }

    .plc-buy-button {
        width: 100%;
        padding: calc(var(--plc-spacing) * 0.6) var(--plc-spacing);
        margin-top: var(--plc-spacing);
    }
}

/* Launch Trigger Styles */
.plc-text-link {
    color: var(--plc-color-primary);
    text-decoration: none;
    transition: color 0.2s;
}

.plc-text-link:hover {
    color: color-mix(in srgb, var(--plc-color-primary) 90%, black);
    text-decoration: underline;
}

/* Focus Styles for Accessibility */
.plc-category-tab:focus,
.plc-slider:focus,
.plc-buy-button:focus,
.plc-close:focus {
    outline: 2px solid var(--plc-color-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .plc-comparator {
        position: static;
        display: block;
    }

    .plc-modal {
        position: static;
        background: none;
        padding: 0;
    }

    .plc-modal-content {
        max-width: none;
        box-shadow: none;
    }

    .plc-close {
        display: none;
    }
}