/* Text Diff Styles */
.diff-container {
    width: 100%;
    max-width: 1400px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.diff-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.diff-toolbar .format-btn {
    margin-top: 0;
}

.diff-toolbar .toolbar-btn {
    margin-top: 0;
}

.diff-view-btn.active {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

.diff-checkbox-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.85rem;
    color: var(--text-primary);
    cursor: pointer;
    white-space: nowrap;
}

.diff-checkbox-label input[type="checkbox"] {
    margin-right: 2px;
}

/* Input Panels */
.diff-input-panels {
    display: flex;
    gap: 15px;
    min-height: 250px;
}

.diff-input-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 15px;
    box-shadow: 0 0 4px var(--shadow-color);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.diff-input-panel:focus-within {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 15px var(--accent-primary);
}

.diff-input-panel label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.diff-input-panel textarea {
    flex: 1;
    width: 100%;
    background-color: transparent;
    color: var(--text-primary);
    border: none;
    resize: none;
    font-size: 14px;
    font-family: 'Courier New', monospace;
    outline: none;
    line-height: 1.6;
    box-sizing: border-box;
}

/* Stats Bar */
.diff-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 0.85rem;
    padding: 8px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 5px;
}

.diff-stats:empty {
    display: none;
}

.diff-stat {
    display: flex;
    align-items: center;
    gap: 5px;
}

.diff-stat-added {
    color: var(--syntax-addition);
}

.diff-stat-removed {
    color: var(--syntax-deletion);
}

.diff-stat-unchanged {
    color: var(--text-secondary);
}

/* Diff Output */
.diff-output {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
    overflow-x: auto;
}

.diff-output:empty {
    display: none;
}

/* Unified View */
.diff-unified {
    display: flex;
    flex-direction: column;
}

.diff-line {
    display: flex;
    padding: 1px 10px;
    min-height: 1.5em;
    white-space: pre-wrap;
    word-break: break-all;
}

.diff-line.added {
    background-color: rgba(var(--diff-add-rgb, 116, 161, 46), 0.15);
    color: var(--syntax-addition);
}

.diff-line.removed {
    background-color: rgba(var(--diff-del-rgb, 255, 107, 107), 0.15);
    color: var(--syntax-deletion);
}

.diff-line-number {
    min-width: 40px;
    text-align: right;
    padding-right: 10px;
    color: var(--text-secondary);
    user-select: none;
    flex-shrink: 0;
    opacity: 0.6;
}

.diff-line-prefix {
    min-width: 16px;
    flex-shrink: 0;
    user-select: none;
    font-weight: bold;
}

.diff-line-content {
    flex: 1;
    min-width: 0;
}

/* Side-by-Side View */
.diff-side-by-side {
    display: flex;
}

.diff-side-panel {
    flex: 1;
    overflow-x: auto;
    min-width: 0;
}

.diff-side-panel:first-child {
    border-right: 1px solid var(--border-color);
}

.diff-side-panel .diff-line {
    padding: 1px 10px;
}

.diff-side-panel .diff-line.filler {
    background-color: var(--bg-tertiary);
    opacity: 0.4;
}

/* Word-level highlighting */
.diff-line.added .word-changed {
    background-color: rgba(var(--diff-add-rgb, 116, 161, 46), 0.45);
    border-radius: 3px;
    padding: 1px 2px;
}

.diff-line.removed .word-changed {
    background-color: rgba(var(--diff-del-rgb, 255, 107, 107), 0.45);
    border-radius: 3px;
    padding: 1px 2px;
}

/* Scrollbar styling */
.diff-output::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.diff-output::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: 5px;
}

.diff-output::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 5px;
}

.diff-output::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* Responsive */
@media (max-width: 992px) {
    .diff-input-panels {
        flex-direction: column;
    }

    .diff-side-by-side {
        flex-direction: column;
    }

    .diff-side-panel:first-child {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
}

@media (max-width: 768px) {
    .diff-input-panels {
        min-height: 150px;
    }

    .diff-input-panel {
        min-height: 150px;
    }

    .diff-toolbar {
        gap: 6px;
    }
}