/* ===============================================================
   ToolDuck — XML to JSON Converter Styles
   Scoped under .x2j-app
   =============================================================== */

.x2j-app {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 2rem;
}

/* ---------------------------------------------------------------
   Header Bar
   --------------------------------------------------------------- */
.x2j-header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 0.85rem 1.15rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md, 8px);
}

.x2j-mode-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--ink);
}

.x2j-mode-badge span {
    color: var(--primary, #1d4ed8);
}

.x2j-global-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ---------------------------------------------------------------
   Options Bar
   --------------------------------------------------------------- */
.x2j-options-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 0.65rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md, 8px);
    font-size: 0.85rem;
}

.x2j-option-group {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.x2j-option-label {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--ink-2);
}

.x2j-option-select {
    padding: 4px 8px;
    font-size: 0.82rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg);
    color: var(--ink);
    cursor: pointer;
}

.x2j-option-select:focus {
    outline: 2px solid var(--primary, #1d4ed8);
    outline-offset: 1px;
}

/* ---------------------------------------------------------------
   Error Banner
   --------------------------------------------------------------- */
.x2j-error-banner {
    padding: 0.75rem 1rem;
    background: #fef2f2;
    border: 1px solid #f87171;
    border-radius: var(--radius-md, 8px);
    color: #991b1b;
    font-size: 0.87rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    white-space: pre-wrap;
    word-break: break-word;
}

html[data-theme="dark"] .x2j-error-banner {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.4);
    color: #fca5a5;
}

/* ---------------------------------------------------------------
   Dual Split Editors
   --------------------------------------------------------------- */
.x2j-editors {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

@media (max-width: 900px) {
    .x2j-editors {
        grid-template-columns: 1fr;
    }
}

.x2j-column {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md, 8px);
    overflow: hidden;
}

.x2j-column-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.55rem 0.85rem;
    background: var(--bg-muted);
    border-bottom: 1px solid var(--border);
}

.x2j-column-title {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.x2j-badge {
    display: inline-block;
    padding: 2px 7px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 4px;
    background: var(--border);
    color: var(--ink-2);
}

.x2j-badge--primary {
    background: var(--primary, #1d4ed8);
    color: #ffffff;
}

.x2j-meta-count {
    font-size: 0.78rem;
    color: var(--ink-2);
}

.x2j-column-tools {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.x2j-editor-body {
    display: flex;
    position: relative;
    min-height: 440px;
    background: var(--bg);
}

.x2j-gutter {
    width: 44px;
    padding: 0.75rem 0.4rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.82rem;
    line-height: 1.45rem;
    text-align: right;
    color: var(--ink-2);
    opacity: 0.65;
    background: var(--bg-muted);
    border-right: 1px solid var(--border);
    user-select: none;
    overflow: hidden;
    white-space: pre;
}

.x2j-textarea,
.x2j-output {
    flex: 1;
    margin: 0;
    padding: 0.75rem 0.85rem;
    border: none;
    background: transparent;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.82rem;
    line-height: 1.45rem;
    color: var(--ink);
    resize: none;
    tab-size: 2;
    overflow: auto;
    white-space: pre;
}

.x2j-textarea:focus {
    outline: none;
}

.x2j-output:focus {
    outline: none;
}

/* ---------------------------------------------------------------
   Toast Notification
   --------------------------------------------------------------- */
.x2j-toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--ink);
    color: var(--surface);
    padding: 0.65rem 1.15rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
    z-index: 9999;
}

.x2j-toast.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------------------------------------------------------------
   Rules & Architecture Explanation Box
   --------------------------------------------------------------- */
.x2j-rules-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md, 8px);
    padding: 1.25rem 1.5rem;
    margin-top: 1rem;
}

.x2j-rules-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ink);
    margin: 0 0 0.5rem 0;
}

.x2j-rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.x2j-rule-item {
    padding: 0.85rem;
    background: var(--bg-muted);
    border-radius: 6px;
    border: 1px solid var(--border);
}

.x2j-rule-item h3 {
    font-size: 0.88rem;
    font-weight: 600;
    margin: 0 0 0.35rem 0;
    color: var(--ink);
}

.x2j-rule-item p {
    font-size: 0.82rem;
    color: var(--ink-2);
    margin: 0;
    line-height: 1.4;
}

/* ---------------------------------------------------------------
   Directory Navigation Cards
   --------------------------------------------------------------- */
.x2j-directory {
    margin-top: 1.5rem;
    padding: 1.25rem 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md, 8px);
}

.x2j-directory-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--ink);
    margin: 0 0 0.45rem 0;
}

.x2j-directory-intro {
    font-size: 0.88rem;
    color: var(--ink-2);
    margin: 0 0 1rem 0;
    line-height: 1.5;
}

.x2j-directory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.85rem;
}

.x2j-directory-card {
    display: flex;
    flex-direction: column;
    padding: 0.95rem 1.1rem;
    background: var(--bg-muted);
    border: 1px solid var(--border);
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.15s ease;
}

.x2j-directory-card:hover {
    border-color: var(--primary, #1d4ed8);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.x2j-directory-card-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--primary, #1d4ed8);
    margin-bottom: 0.35rem;
}

.x2j-directory-card-desc {
    font-size: 0.8rem;
    color: var(--ink-2);
    margin: 0;
    line-height: 1.4;
}