:root {
    --bg-color: #f7f7f7;
    --text-color: #222;
    --panel-color: #ffffff;
    --border-color: #ccc;
    --match-bg: #d4edda;
    --match-text: #21b343;
    --extra-bg: #fff3cd;
    --extra-text: #e7ae03;
    --source-only-bg: #dce7f2;
    --source-only-text: #4f6478;
    --compare-btn-bg: #3587c3;
    --container-bg: #e7e7e7;
}

html {
    height: 100%;
    overflow: hidden;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.2s ease, color 0.2s ease;
    height: 100%;
    overflow: hidden;
    box-sizing: border-box;
}
body p{
    font-size: 16px;
}

body.dark {
    --bg-color: #0e141f;
    --text-color: #f5f5f5;
    --panel-color: #101723;
    --border-color: #3e526b;
    --match-bg: #1b3d2a;
    --match-text: #b2f2bb;
    --extra-bg: #4a3f14;
    --extra-text: #ffe8a3;
    --source-only-bg: #24384a;
    --source-only-text: #a8c0d6;
    --compare-btn-bg: #3587c3;
    --container-bg: #070e17;
}

#header {
    display:flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

#applayout {
    height: 100%;
    display: flex;
    flex-direction: column;
}

#main {
    width: 100%;
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}
#logo {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}
#logo span{
    font-size: 15px;
    
}
#logo h1{
    position: relative;
    right: 8px;
    margin-top: 0;
    margin-bottom: 0;
}
#logo svg {
    width: 58px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1;
    stroke-linecap: round;
    stroke-linejoin: round;
    color: var(--compare-btn-bg);
    position: relative;
    top: -7px;
}
 
#checkerTool {
    display: flex;
    gap: 20px;
    border: 1px solid var(--border-color);
    border-radius: 0 8px 8px 8px;
    padding: 16px;
    background-color: var(--container-bg);
    flex: 1;
    min-height: 200px;
}

#comparison {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

#contentChecker {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.panel-heading {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    height: 60px;
}

.panel-heading h2 {
    margin: 0;
}

.word-count {
    font-size: 0.95rem;
    color: var(--source-only-text);
    white-space: nowrap;
}

textarea, .text-input {
    width: 100%;
    flex: 1;
    min-height: 0;
    margin-bottom: 8px;
    padding: 10px;
    box-sizing: border-box;
    border-radius: 4px;
    white-space: pre-wrap;
    display: block;
    background-color: var(--panel-color);
    color: var(--text-color);
    font-family: Arial, sans-serif;
    overflow-y: auto;
    overflow-x: hidden;
}

.text-input:focus {
    outline: 2px solid var(--compare-btn-bg);
}

.text-input {
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

.text-input::-webkit-scrollbar {
    width: 6px;
}

.text-input::-webkit-scrollbar-track {
    background: transparent;
}

.text-input::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

.text-input::-webkit-scrollbar-thumb:hover {
    background-color: var(--source-only-text);
}

#pageText:empty::before,
#sourceText:empty::before {
    content: "Paste content here";
    color: #8c8f95;
}

.panel-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#mergedView .panel-footer {
    justify-content: flex-end;
}

.match {
    background-color: var(--match-bg);
    color: var(--match-text);
    padding: 0 2px;
    border-radius: 2px;
}

.extra {
    background-color: var(--extra-bg);
    color: var(--extra-text);
    padding: 0 2px;
    border-radius: 2px;
}

.source-only {
    background-color: var(--source-only-bg);
    color: var(--source-only-text);
    padding: 0 2px;
    border-radius: 2px;
}

button {
    padding: 9px 9px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--panel-color);
    color: var(--text-color);
    cursor: pointer;
}


#compareBtn {
    background-color: var(--compare-btn-bg);
    color: var(--text-color);
    flex: 1;
    width: 100%;
    height: 50px;
    margin-top: 8px;
    font-size: 16px;
    transition: background-color 0.25s ease;
}

#compareBtn.up-to-date {
    background-color: var(--border-color);
    color: var(--text-color);
    opacity: 0.6;
    cursor: default;
}

#compareBtn.btn-copy-ready {
    background-color: var(--panel-color);
    cursor: pointer;
}
#compareBtn.btn-copy-ready:hover {
    background-color: var(--source-only-bg);
}

body:not(.dark) #compareBtn:not(.up-to-date):not(.btn-copy-ready) {
    color: #fff;
}

body:not(.dark) #loadDemoBtn {
    color: #fff;
}

.block-container {
    position: relative;
    margin-top: 16px;
}

#pasteSourceBtn, #pasteComparisonBtn {
    transition: background-color 0.15s ease, transform 0.1s ease;
}

#pasteSourceBtn:hover, #pasteComparisonBtn:hover {
    background-color: var(--source-only-bg);
}

#compareBtn:not(.up-to-date):active,
#loadDemoBtn:active,
#pasteSourceBtn:active,
#pasteComparisonBtn:active {
    transform: scale(0.98);
}

#pasteComparisonBtn, #pasteSourceBtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 170px;
    height: 50px;
    font-size: 16px;
}
#pasteComparisonBtn svg, #pasteSourceBtn svg{
    margin-right: 7px;
}
#controls {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-bottom: 20px;
}

#viewMergedBtn {
    margin-left: -1px;
}

#settings {
    display: flex;
    gap: 8px;
}

#settingsContainer {
    position: relative;
}

#settingsBtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    margin-bottom: 10px;
    background: none;
    border: none;
}

#settingsMenu {
    position: absolute;
    right: 0;
    top: calc(100% - 10px);
    background-color: var(--panel-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    z-index: 100;
    min-width: 180px;
    display: flex;
    flex-direction: column;
}

#settingsMenu button {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 8px 12px;
    background: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    justify-content: center;
}

#settingsMenu button:hover {
    background-color: var(--source-only-bg);
}

#displayControls {
    display: flex;
    gap: 4px;
    align-items: center;
}

#displayControls button {
    flex: 1;
    width: auto;
    justify-content: center;
}

#settingsMenu hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 4px 0;
}

#themeToggleBtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: none;
    background: none;
}

#result {
    margin-top: 12px;
    flex-shrink: 0;
}

.result-cards {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.cardtext{
    width: 64%;
}

.result-card {
    padding: 14px;
    display: flex;
    align-items: center;
}

.result-card svg{
    margin-right: 12px;
}

.result-card h3 {
    margin: 0 0 8px 0;
    font-size: 20px;
}

.result-value {
    margin: 4px 0 0 0;
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.7;
}
#sourceCoverageValue {
    color: var(--text-color);
}
#extraContentValue {
    color: var(--text-color);
}

#additionalContentIcon {
    color: var(--border-color);
    background-color: var(--panel-color);
    border-radius: 40px;
    padding: 10px;
    border: 2px solid var(--border-color);
}

.result-word-count {
    margin: 0;
    font-size: 25px;
    font-weight: bold;
}

#missingContentIcon {
    color: var(--border-color);
    background-color: var(--panel-color);
    border-radius: 40px;
    padding: 10px;
    border: 2px solid var(--border-color);
}

#missingContentValue {
    color: var(--text-color);
}

.has-missing #missingWordCount {
    color: var(--source-only-text);
}

.has-missing #missingContentIcon {
    color: var(--source-only-text);
    background-color: var(--source-only-bg);
    border: 2px solid var(--source-only-text);
}

#sourceCheckIcon {
    color: var(--border-color);
    background-color: var(--panel-color);
    border-radius: 40px;
    padding: 10px;
    border: 2px solid var(--border-color);
}

.has-match #matchedWordCount {
    color: var(--match-text);
}
.has-match #sourceCheckIcon {
    color: var(--match-text);
    background-color: var(--match-bg);
    border: 2px solid var(--match-text);
}

.has-extra #addedWordCount {
    color: var(--extra-text);
}
.has-extra #additionalContentIcon {
    color: var(--extra-text);
    background-color: var(--extra-bg);
    border: 2px solid var(--extra-text);
}

.result-card.result-metrics {
    flex: 0.6;
}

@media (max-width: 800px) {
    html, body {
        height: auto;
        overflow: auto;
    }
    #applayout {
        height: auto;
        flex-direction: column;
    }
    #main {
        flex: none;
    }
    #checkerTool {
        flex: none;
        flex-direction: column;
    }
    textarea, .text-input {
        flex: none;
        min-height: 150px;
    }
    #header {
        margin-right: 0;
        margin-bottom: 20px;
        max-width: none;
    }
    .result-cards {
        flex-direction: column;
        gap: 8px;
    }

    .result-card.result-metrics {
        flex: none;
        width: 100%;
    }
}


#compareBtn.loading {
    letter-spacing: 0.05em;
}

.text-input.comparing {
    opacity: 0.65;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

body:not(.dark) .text-input.comparing {
    opacity: 1;
    filter: brightness(0.95);
}

#tabBar {
    display: flex;
    margin-bottom: 0;
}

#viewToggle {
    display: flex;
    align-items: flex-end;
}

.view-toggle {
    height: 50px;
    width: 150px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    background-color: transparent;
    color: var(--text-color);
    cursor: pointer;
    position: relative;
    bottom: -1px;
}

.view-toggle.active {
    background-color: var(--container-bg);

    opacity: 1;
    
}

.view-toggle:disabled:not(.active) {
    opacity: 0.15;
    cursor: not-allowed;
    pointer-events: none;
}

.view-toggle:disabled.active {
    opacity: 1;
    cursor: default;
}

#mergedView {
    display: none;
    width: 100%;
    flex: 1;
    min-height: 0;
    flex-direction: column;
}



.merged-key {
    display: flex;
    gap: 16px;
    font-size: 0.95rem;
    color: var(--source-only-text);
}

.key-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.key-swatch {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    display: inline-block;
}

.key-swatch.match {
    background-color: var(--match-text);
}

.key-swatch.extra {
    background-color: var(--extra-text);
}

.key-swatch.source-only {
    background-color: var(--source-only-text);
}

#sourceNav, #comparisonNav, #mergedNav {
    display: flex;
    visibility: hidden;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

#sourcePrevBtn, #sourceNextBtn,
#comparisonPrevBtn, #comparisonNextBtn,
#mergedPrevBtn, #mergedNextBtn {
    cursor: pointer;
    opacity: 0.6;
}

#sourcePrevBtn:hover, #sourceNextBtn:hover,
#comparisonPrevBtn:hover, #comparisonNextBtn:hover,
#mergedPrevBtn:hover, #mergedNextBtn:hover {
    opacity: 1;
}


@keyframes shimmer {
    0%   { background-position: 100% 0; }
    100% { background-position:   0% 0; }
}

.difference-focused {
    background-image: linear-gradient(
        90deg,
        transparent 35%,
        rgba(255, 255, 255, 0.7) 50%,
        transparent 65%
    );
    background-size: 300% 100%;
    animation: shimmer 0.6s ease-in-out;
}

body:not(.dark) .difference-focused {
    background-image: linear-gradient(
        90deg,
        transparent 35%,
        rgba(0, 0, 0, 0.15) 50%,
        transparent 65%
    );
}

.progress-bar {
    height: 4px;
    background-color: var(--border-color);
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    border-radius: 2px;
    transition: width 0.4s ease;
}

.has-match #matchedProgressFill {
    background-color: var(--match-text);
}

.has-extra #addedProgressFill {
    background-color: var(--extra-text);
}

.has-missing #missingProgressFill {
    background-color: var(--source-only-text);
}

@keyframes tabReady {
    0%   { filter: brightness(1); background-color: transparent; }
    40%  { filter: brightness(1.4); background-color: var(--border-color); }
    100% { filter: brightness(1); background-color: transparent; }
}

.tab-ready {
    animation: tabReady 0.5s ease-out;
}

@keyframes comparePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(53, 135, 195, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(53, 135, 195, 0); }
}

#compareBtn.demo-pulse {
    animation: comparePulse 1.5s ease-in-out 3;
}

#loadDemoBtn {
    height: 50px;
    padding: 0 20px;
    font-size: 16px;
    margin-top: 8px;
    background-color: var(--compare-btn-bg);
    border: 1px solid var(--border-color);
    white-space: nowrap;
    display: flex;
    align-items: center;
}

#loadDemoBtn svg {
    margin-left: 8px;
}

#replayDemoBtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    background: none;
    border: none;
}

@keyframes bubbleAppear {
    0%   { border-color: var(--compare-btn-bg); box-shadow: 0 0 0 3px rgba(53, 135, 195, 0.4); }
    100% { border-color: var(--border-color); box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
}

.tutorial-bubble {
    position: fixed;
    background-color: var(--panel-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    max-width: 220px;
    z-index: 1000;
    font-size: 14px;
    animation: bubbleAppear 0.6s ease-out;
    display: flex;
    flex-direction: column;
}

.tutorial-bubble p {
    margin: 0 0 10px 0;
    padding-right: 16px;
}

.tutorial-close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 12px;
    opacity: 0.6;
    padding: 0;
}

.tutorial-close:hover {
    opacity: 1;
}

.tutorial-next {
    font-size: 13px;
    padding: 4px 10px;
    color: var(--text-color);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    align-self: flex-end;
    opacity: 0.6;
    text-decoration: underline;
}
.tutorial-next:hover {
    opacity: 1;
}

#footer {
    text-align: center;
    font-size: 12px;
    opacity: 0.5;
    padding: 8px 0;
    flex-shrink: 0;
    margin-top: 16px;
}

#footer p {
    margin: 0;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

#footer svg {
    flex-shrink: 0;
}

@supports not (gap: 1px) {
    #logo > * + * { margin-left: 12px; }
    #checkerTool > * + * { margin-left: 20px; }
    .panel-heading > * + * { margin-left: 10px; }
    #controls > * + * { margin-left: 5px; }
    #settings > * + * { margin-left: 8px; }
    #displayControls > * + * { margin-left: 4px; }
    .result-cards > * + * { margin-left: 12px; }
    .merged-key > * + * { margin-left: 16px; }
    .key-item > * + * { margin-left: 6px; }
    #sourceNav > * + *,
    #comparisonNav > * + *,
    #mergedNav > * + * { margin-left: 4px; }
    #footer p > * + * { margin-left: 6px; }

    @media (max-width: 800px) {
        #checkerTool > * + * { margin-left: 0; margin-top: 20px; }
        .result-cards > * + * { margin-left: 0; margin-top: 8px; }
    }
}