/*
  diff-viewer.css — Rich diff viewer component styles
  All structural colors use CSS variables — adapts to every theme.
  Diff highlight colors are set as CSS custom properties on .dv-root
  by Vue's computed color_vars and fall back to the defaults below.
*/

/*---ROOT---*/

.dv-root {
    /* Fallback diff colors (overridden by Vue's color_vars at runtime) */
    --dv-add-bg:     rgba(34, 197, 94,  0.12);
    --dv-add-inline: rgba(34, 197, 94,  0.42);
    --dv-add-text:   #22c55e;
    --dv-del-bg:     rgba(239, 68, 68,  0.12);
    --dv-del-inline: rgba(239, 68, 68,  0.42);
    --dv-del-text:   #ef4444;

    font-family: var(--font-mono);
    font-size: .8rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-surface);
    box-shadow: var(--shadow-sm);
}

/*---TOOLBAR---*/

.dv-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.dv-toolbar-left  { display: flex; align-items: center; gap: 6px; }
.dv-toolbar-center { flex: 1; display: flex; justify-content: center; }
.dv-toolbar-right { display: flex; align-items: center; gap: 5px; margin-left: auto; }

/* Buttons */

.dv-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 9px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-size: .72rem;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
    white-space: nowrap;
    user-select: none;
}

.dv-btn:hover          { background: var(--bg-elevated); color: var(--text-main); }
.dv-btn.is-active      { background: var(--brand-dim);   color: var(--brand);     border-color: var(--brand); }
.dv-btn--icon          { padding: 4px 7px; }
.dv-btn--sm            { font-size: .68rem; padding: 3px 7px; }
.dv-btn--block         { width: 100%; justify-content: center; margin-top: 4px; }

/* View toggle (split / unified) */

.dv-view-toggle {
    display: flex;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--bg-surface);
}

.dv-view-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 13px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: .72rem;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.dv-view-btn:not(.is-active):hover { background: var(--bg-elevated); color: var(--text-main); }
.dv-view-btn.is-active { background: var(--brand); color: #fff; }

/* Stats */

.dv-stats { display: flex; align-items: center; gap: 3px; }

.dv-stat {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: .68rem;
    font-family: var(--font-mono);
    font-weight: 600;
}

.dv-stat--add { background: var(--dv-add-bg); color: var(--dv-add-text); }
.dv-stat--del { background: var(--dv-del-bg); color: var(--dv-del-text); }
.dv-stat--eq  { background: var(--bg-elevated); color: var(--text-muted); }

/* Hunk navigation */

.dv-hunk-nav {
    display: flex;
    align-items: center;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--bg-surface);
}

.dv-hunk-nav .dv-btn {
    border: none;
    border-radius: 0;
    background: transparent;
}

.dv-hunk-counter {
    padding: 0 8px;
    font-size: .65rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    min-width: 40px;
    text-align: center;
    border-left: 1px solid var(--border-subtle);
    border-right: 1px solid var(--border-subtle);
}

/*---SETTINGS_PANEL---*/

.dv-settings-wrap { position: relative; }

.dv-settings-panel {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 200;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 12px 14px;
    min-width: 210px;
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.dv-sp-title {
    font-size: .66rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--text-muted);
    font-family: var(--font-sans);
}

.dv-sp-sep {
    height: 1px;
    background: var(--border-subtle);
    margin: 2px 0;
}

.dv-sp-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    font-size: .72rem;
    color: var(--text-secondary);
    font-family: var(--font-sans);
}

.dv-sp-row label { flex: 1; }

.dv-sp-row input[type="color"] {
    width: 30px;
    height: 22px;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 2px;
    background: var(--bg-surface);
    cursor: pointer;
    flex-shrink: 0;
}

.dv-sp-row--range { flex-wrap: nowrap; gap: 6px; }
.dv-sp-row--range label { min-width: 52px; flex: none; }

.dv-range {
    flex: 1;
    height: 3px;
    cursor: pointer;
    accent-color: var(--brand);
}

.dv-sp-val {
    font-family: var(--font-mono);
    font-size: .65rem;
    color: var(--text-muted);
    min-width: 28px;
    text-align: right;
}

/*---INPUT_AREA---*/

.dv-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-bottom: 1px solid var(--border);
}

.dv-input-pane {
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
}

.dv-input-pane:last-child { border-right: none; }

.dv-input-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 10px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-subtle);
}

.dv-input-label {
    font-size: .72rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    display: flex;
    align-items: center;
    gap: 5px;
}

.dv-input-actions { display: flex; gap: 4px; }

.dv-textarea {
    flex: 1;
    resize: none;
    min-height: 160px;
    padding: 10px 12px;
    font-family: var(--font-mono);
    font-size: .78rem;
    line-height: 1.65;
    background: var(--bg-surface);
    color: var(--text-main);
    border: none;
    outline: none;
    transition: background var(--transition);
}

.dv-textarea--drag { background: var(--brand-dim); }
.dv-textarea::placeholder { color: var(--text-muted); font-style: italic; }

.dv-input-footer {
    display: flex;
    justify-content: flex-end;
    gap: 14px;
    padding: 3px 10px;
    font-size: .65rem;
    font-family: var(--font-sans);
    color: var(--text-muted);
    background: var(--bg-elevated);
    border-top: 1px solid var(--border-subtle);
}

/*---COLOR_DOTS---*/

.dv-dot {
    font-size: .45rem;
    vertical-align: middle;
}
.dv-dot--add { color: var(--dv-add-text); }
.dv-dot--del { color: var(--dv-del-text); }

/*---EMPTY_STATES---*/

.dv-empty {
    padding: 52px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 6px;
    font-family: var(--font-sans);
}

.dv-empty-icon {
    font-size: 2.2rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.dv-empty--ok .dv-empty-icon { color: var(--dv-add-text); }

.dv-empty-title {
    margin: 0;
    font-size: .9rem;
    font-weight: 600;
    color: var(--text-main);
}

.dv-empty-sub {
    margin: 0;
    font-size: .78rem;
    color: var(--text-muted);
}

/*---SPLIT_VIEW---*/

.dv-split-wrap {
    display: flex;
    max-height: 580px;
    overflow: hidden;
}

.dv-pane {
    flex: 1;
    min-width: 0;
    overflow: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.dv-pane::-webkit-scrollbar          { width: 6px; height: 6px; }
.dv-pane::-webkit-scrollbar-track    { background: transparent; }
.dv-pane::-webkit-scrollbar-thumb    { background: var(--border); border-radius: 3px; }
.dv-pane::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

.dv-split-gutter {
    width: 1px;
    flex-shrink: 0;
    background: var(--border);
}

.dv-pane-label {
    position: sticky;
    top: 0;
    z-index: 3;
    padding: 4px 10px;
    font-size: .68rem;
    font-weight: 600;
    font-family: var(--font-sans);
    color: var(--text-secondary);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: 5px;
}

/*---DIFF_ROWS---*/

.dv-row {
    display: flex;
    align-items: stretch;
    min-height: 21px;
    min-width: max-content;
    transition: filter 0.08s;
}

.dv-row:hover { filter: brightness(0.97); }
[data-bs-theme="dark"] .dv-row:hover { filter: brightness(1.04); }

.dv-row--equal { background: transparent; }
.dv-row--add   { background: var(--dv-add-bg); }
.dv-row--del   { background: var(--dv-del-bg); }
.dv-row--empty { background: var(--bg-elevated); }
.dv-row--empty .dv-code { opacity: 0; }

/* Line numbers */

.dv-lnum {
    flex-shrink: 0;
    width: 38px;
    padding: 1px 6px 1px 4px;
    font-size: .65rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    text-align: right;
    user-select: none;
    border-right: 1px solid var(--border-subtle);
    line-height: 21px;
}

.dv-lnum--a { width: 36px; }
.dv-lnum--b { width: 36px; border-right: none; }

/* Markers (+ / - / space) */

.dv-marker {
    flex-shrink: 0;
    width: 16px;
    text-align: center;
    font-size: .78rem;
    font-weight: 700;
    font-family: var(--font-mono);
    line-height: 21px;
    user-select: none;
    color: var(--text-muted);
    padding: 0 1px;
}

.dv-row--add .dv-marker { color: var(--dv-add-text); }
.dv-row--del .dv-marker { color: var(--dv-del-text); }

/* Code content */

.dv-code {
    flex: 1;
    margin: 0;
    padding: 1px 12px 1px 4px;
    font-family: var(--font-mono);
    font-size: .78rem;
    line-height: 21px;
    white-space: pre;
    overflow: visible;
    background: none;
    color: var(--text-main);
    min-width: 0;
    border: none;
}

/* Intraline highlights */

.dv-mark-add {
    background: var(--dv-add-inline);
    border-radius: 2px;
    padding: 0 1px;
}

.dv-mark-del {
    background: var(--dv-del-inline);
    border-radius: 2px;
    padding: 0 1px;
}

/*---UNIFIED_VIEW---*/

.dv-unified-wrap {
    max-height: 580px;
    overflow: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.dv-unified-wrap::-webkit-scrollbar          { width: 6px; height: 6px; }
.dv-unified-wrap::-webkit-scrollbar-track    { background: transparent; }
.dv-unified-wrap::-webkit-scrollbar-thumb    { background: var(--border); border-radius: 3px; }

.dv-unified-header {
    position: sticky;
    top: 0;
    z-index: 3;
    display: flex;
    gap: 16px;
    padding: 4px 10px 4px calc(36px + 36px + 16px + 4px);
    font-size: .68rem;
    font-weight: 600;
    font-family: var(--font-sans);
    color: var(--text-secondary);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-subtle);
}

.dv-unified-row {}

/*---RESPONSIVE---*/

@media (max-width: 640px) {
    .dv-inputs        { grid-template-columns: 1fr; }
    .dv-split-wrap    { flex-direction: column; max-height: none; }
    .dv-split-gutter  { width: 100%; height: 1px; }
    .dv-pane          { max-height: 300px; }
    .dv-toolbar       { flex-wrap: wrap; }
    .dv-toolbar-center { order: -1; width: 100%; }
    .dv-toolbar-right  { width: 100%; justify-content: flex-end; }
    .dv-view-btn span  { display: none; }
}