/* OS-2045 Editor Pro — notepad++/microsoft-editor-style multi-tab editor.
 *
 * Scope: applies to .editor-pro-frame (mounted inside #codeEditor).
 * Works under both win3.11 and OS-2045 themes — the inner frame is
 * theme-neutral with subtle accent colors that pull from CSS vars when
 * present (var(--theme-accent), var(--ink), var(--theme-color)).
 */

#codeEditor .editor-pro-frame {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    background: var(--bg-1);
    color: var(--ink);
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    overflow: hidden;
    position: relative;
}

/* ─── Toolbar ──────────────────────────────────────────────────────── */
#codeEditor .ep-toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--glass-2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex: 0 0 auto;
    min-height: 38px;
}
#codeEditor .ep-tb-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 6px;
    color: var(--ink-2);
    font-size: 12.5px;
    font-family: 'Inter', system-ui, sans-serif;
    cursor: pointer;
    transition: background 100ms ease, border-color 100ms ease, color 100ms ease;
}
#codeEditor .ep-tb-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.18);
    color: var(--ink);
}
#codeEditor .ep-tb-btn:active {
    background: rgba(255, 255, 255, 0.12);
}
#codeEditor .ep-tb-btn.ep-tb-primary {
    background: linear-gradient(180deg, #7c8cff 0%, #5b6dff 100%);
    border-color: rgba(124, 140, 255, 0.6);
    color: var(--ink);
}
#codeEditor .ep-tb-btn.ep-tb-primary:hover {
    filter: brightness(1.1);
}
#codeEditor .ep-tb-sep {
    width: 1px;
    height: 22px;
    background: rgba(255, 255, 255, 0.08);
    margin: 0 4px;
}

/* ─── Tab bar ──────────────────────────────────────────────────────── */
#codeEditor .ep-tabbar {
    display: flex;
    align-items: stretch;
    background: var(--glass-2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    overflow-x: auto;
    overflow-y: hidden;
    flex: 0 0 auto;
    min-height: 34px;
    scrollbar-width: thin;
}
#codeEditor .ep-tabbar::-webkit-scrollbar { height: 4px; }
#codeEditor .ep-tabbar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.10); border-radius: 2px; }

#codeEditor .ep-tab {
    display: flex; align-items: center; gap: 6px;
    padding: 6px 10px 6px 14px;
    background: transparent;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--ink-3);
    font-size: 12px;
    font-family: 'Inter', system-ui, sans-serif;
    cursor: pointer;
    user-select: none;
    max-width: 240px;
    min-width: 100px;
    transition: background 80ms ease;
    position: relative;
}
#codeEditor .ep-tab:hover { background: rgba(255, 255, 255, 0.04); color: var(--ink); }
#codeEditor .ep-tab.active {
    background: var(--bg-1);
    color: var(--ink);
}
#codeEditor .ep-tab.active::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 2px;
    background: var(--theme-accent, #5fd1ff);
}
#codeEditor .ep-tab-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}
#codeEditor .ep-tab-dot {
    color: var(--theme-accent, #5fd1ff);
    font-size: 10px;
    flex: 0 0 auto;
}
#codeEditor .ep-tab-close {
    background: transparent;
    border: 0;
    color: var(--ink-3);
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 14px;
    line-height: 1;
    flex: 0 0 auto;
    transition: background 80ms ease, color 80ms ease;
}
#codeEditor .ep-tab-close:hover { background: rgba(255, 100, 100, 0.18); color: #ff8a8a; }

#codeEditor .ep-tab-new {
    background: transparent;
    border: 0;
    color: var(--ink-3);
    font-size: 18px;
    cursor: pointer;
    padding: 0 12px;
    transition: background 80ms ease, color 80ms ease;
    flex: 0 0 auto;
}
#codeEditor .ep-tab-new:hover { background: rgba(255, 255, 255, 0.05); color: var(--theme-accent, #5fd1ff); }

/* ─── Welcome pane ──────────────────────────────────────────────────── */
#codeEditor .ep-welcome {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
    overflow: auto;
}
#codeEditor .ep-welcome[hidden] { display: none; }
#codeEditor .ep-welcome-inner {
    max-width: 560px;
    width: 100%;
    text-align: center;
}
#codeEditor .ep-welcome-title {
    font-family: 'Instrument Serif', 'Georgia', serif;
    font-size: 56px;
    color: var(--ink);
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 8px;
}
#codeEditor .ep-welcome-sub {
    color: var(--ink-3);
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 13px;
    margin-bottom: 32px;
}
#codeEditor .ep-welcome-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
}
#codeEditor .ep-welcome-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--ink);
    border-radius: 10px;
    padding: 18px 22px;
    cursor: pointer;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 13px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    min-width: 160px;
    transition: background 100ms ease, border-color 100ms ease, transform 80ms ease;
}
#codeEditor .ep-welcome-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: color-mix(in srgb, var(--theme-accent, #5fd1ff) 50%, transparent);
    transform: translateY(-1px);
}
#codeEditor .ep-wb-icon {
    font-size: 24px;
    color: var(--theme-accent, #5fd1ff);
    line-height: 1;
}
#codeEditor .ep-wb-label { font-weight: 500; }
#codeEditor .ep-wb-kbd {
    color: var(--ink-3);
    font-size: 11px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
}
#codeEditor .ep-recent-section {
    text-align: left;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 14px 18px;
}
#codeEditor .ep-recent-head {
    color: var(--ink-3);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 8px;
    font-family: 'Inter', system-ui, sans-serif;
}
#codeEditor .ep-recent-list {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
#codeEditor .ep-recent-item {
    display: flex;
    align-items: baseline;
    gap: 12px;
    width: 100%;
    background: transparent;
    border: 0;
    color: var(--ink-2);
    padding: 6px 8px;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 12px;
    text-align: left;
    transition: background 80ms ease;
}
#codeEditor .ep-recent-item:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--ink);
}
#codeEditor .ep-recent-name { color: var(--theme-accent, #5fd1ff); flex: 0 0 auto; }
#codeEditor .ep-recent-path {
    color: var(--ink-3);
    font-size: 11px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}
#codeEditor .ep-recent-empty {
    list-style: none;
    color: var(--ink-3);
    font-size: 12px;
    padding: 8px;
    font-family: 'Inter', system-ui, sans-serif;
    font-style: italic;
}

/* ─── Body (gutter + textarea + highlight overlay) ──────────────────── */
#codeEditor .ep-body {
    flex: 1;
    display: flex;
    overflow: hidden;
    min-height: 0;
}
#codeEditor .ep-gutter {
    flex: 0 0 auto;
    width: 56px;
    background: var(--glass-2);
    color: var(--ink-3);
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 13px;
    line-height: 1.5;
    padding: 10px 8px 10px 0;
    text-align: right;
    overflow: hidden;
    user-select: none;
    border-right: 1px solid rgba(255, 255, 255, 0.04);
    white-space: pre;
}
#codeEditor .ep-codearea {
    flex: 1;
    position: relative;
    overflow: hidden;
}
#codeEditor .ep-textarea,
#codeEditor .ep-highlight {
    position: absolute;
    inset: 0;
    padding: 10px 12px;
    margin: 0;
    border: 0;
    outline: 0;
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.5;
    tab-size: 4;
    white-space: pre;
    word-wrap: normal;
    overflow: auto;
    box-sizing: border-box;
}
#codeEditor .ep-highlight {
    color: var(--ink);
    pointer-events: none;
    background: transparent;
    z-index: 1;
}
#codeEditor .ep-highlight.ep-hl-disabled { display: none; }
#codeEditor .ep-textarea {
    color: var(--ink);
    background: transparent;
    caret-color: var(--theme-accent, #5fd1ff);
    z-index: 2;
    resize: none;
}
/* When highlight layer is active, hide the textarea text but keep caret/selection visible. */
#codeEditor .ep-codearea:has(.ep-highlight:not(:empty):not(.ep-hl-disabled)) .ep-textarea {
    color: transparent;
}
#codeEditor .ep-codearea:has(.ep-highlight:not(:empty):not(.ep-hl-disabled)) .ep-textarea::selection {
    background: rgba(95, 209, 255, 0.30);
}
#codeEditor .ep-textarea::selection {
    background: rgba(95, 209, 255, 0.30);
    color: inherit;
}

/* ─── Status bar ────────────────────────────────────────────────────── */
#codeEditor .ep-statusbar {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px;
    background: var(--glass-2);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--ink-3);
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 11px;
    min-height: 24px;
}
#codeEditor .ep-st-sep { color: var(--ink-4); }
#codeEditor .ep-st-spacer { flex: 1; }
#codeEditor .ep-st-path {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    color: var(--ink-3);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 50%;
}
#codeEditor .ep-st-modified { color: var(--theme-accent, #5fd1ff); }
#codeEditor .ep-st-lang { color: var(--theme-accent, #5fd1ff); }

/* ─── Syntax tokens ─────────────────────────────────────────────────── */
#codeEditor .ep-highlight .tk-keyword { color: #c39bd3; font-weight: 500; }
#codeEditor .ep-highlight .tk-string  { color: #a8d97a; }
#codeEditor .ep-highlight .tk-comment { color: var(--ink-3); font-style: italic; }
#codeEditor .ep-highlight .tk-number  { color: #f3a76b; }
#codeEditor .ep-highlight .tk-tag     { color: #5fd1ff; }
#codeEditor .ep-highlight .tk-attr    { color: #f9c74f; }
#codeEditor .ep-highlight .tk-prop    { color: #82d3ff; }
#codeEditor .ep-highlight .tk-builtin { color: #ff9bb3; }
#codeEditor .ep-highlight .tk-punct   { color: var(--ink-2); }

/* ─── Modal dialogs (open/save-as, goto-line, tab-switcher) ─────────── */
.ep-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(8, 11, 17, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}
.ep-modal {
    background: linear-gradient(180deg, #182030, #0e1420);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 12px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
    color: var(--ink);
    font-family: 'Inter', system-ui, sans-serif;
    min-width: 420px;
    max-width: 90vw;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.ep-modal-small .ep-modal { min-width: 320px; }
.ep-modal-head {
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    font-weight: 500;
    font-size: 14px;
    color: var(--ink);
}
.ep-modal-body {
    padding: 14px 18px;
    flex: 1;
    overflow: auto;
}
.ep-modal-label {
    display: block;
    font-size: 11px;
    color: var(--ink-3);
    text-transform: uppercase;
    letter-spacing: 0.10em;
    margin-bottom: 6px;
}
.ep-modal-row {
    display: flex;
    gap: 8px;
    align-items: stretch;
}
.ep-modal-input {
    flex: 1;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: 7px;
    padding: 9px 12px;
    color: var(--ink);
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 12px;
    outline: none;
}
.ep-modal-input:focus {
    border-color: color-mix(in srgb, var(--theme-accent, #5fd1ff) 60%, transparent);
    background: rgba(255, 255, 255, 0.06);
}
.ep-modal-pick {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.10);
    color: var(--ink-2);
    border-radius: 7px;
    padding: 0 14px;
    cursor: pointer;
    font-size: 14px;
    transition: background 80ms ease;
}
.ep-modal-pick:hover { background: rgba(255, 255, 255, 0.10); color: #fff; }
.ep-modal-recent {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px dashed rgba(255, 255, 255, 0.06);
}
.ep-modal-recent-head {
    font-size: 11px;
    color: var(--ink-3);
    text-transform: uppercase;
    letter-spacing: 0.10em;
    margin-bottom: 6px;
}
.ep-modal-recent ul { list-style: none; padding: 0; margin: 0; max-height: 200px; overflow: auto; }
.ep-modal-recent li button {
    width: 100%;
    background: transparent;
    border: 0;
    color: var(--ink-2);
    padding: 6px 8px;
    border-radius: 5px;
    cursor: pointer;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    text-align: left;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: background 80ms ease;
}
.ep-modal-recent li button:hover { background: rgba(255, 255, 255, 0.06); color: #fff; }
.ep-modal-foot {
    padding: 12px 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}
.ep-modal-foot button {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.10);
    color: var(--ink-2);
    border-radius: 7px;
    padding: 8px 18px;
    cursor: pointer;
    font-size: 12px;
    font-family: 'Inter', system-ui, sans-serif;
    transition: background 80ms ease, border-color 80ms ease;
}
.ep-modal-foot button:hover { background: rgba(255, 255, 255, 0.10); color: #fff; }
.ep-modal-ok {
    background: color-mix(in srgb, var(--theme-accent, #5fd1ff) 18%, transparent) !important;
    border-color: color-mix(in srgb, var(--theme-accent, #5fd1ff) 60%, transparent) !important;
    color: #fff !important;
}
.ep-modal-ok:hover {
    background: color-mix(in srgb, var(--theme-accent, #5fd1ff) 30%, transparent) !important;
}

/* Tab-switcher list */
.ep-tab-switcher .ep-tab-switcher-list {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.ep-tab-switcher .ep-tab-switcher-list li button {
    width: 100%;
    background: transparent;
    border: 0;
    color: var(--ink-2);
    padding: 8px 10px;
    border-radius: 6px;
    cursor: pointer;
    text-align: left;
    display: flex;
    align-items: baseline;
    gap: 12px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 12px;
    transition: background 80ms ease;
}
.ep-tab-switcher .ep-tab-switcher-list li button:hover,
.ep-tab-switcher .ep-tab-switcher-list li button.active {
    background: rgba(255, 255, 255, 0.06);
    color: var(--ink);
}
.ep-ts-title { color: var(--theme-accent, #5fd1ff); }
.ep-ts-path {
    color: var(--ink-3);
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.ep-ts-dot { color: var(--theme-accent, #5fd1ff); }

/* Win3.11 fallback — keep visible but minimally themed */
[data-theme-mode="win311"] #codeEditor .editor-pro-frame {
    background: #1a1a1a;
}
[data-theme-mode="win311"] #codeEditor .ep-tabbar { background: #232323; }
[data-theme-mode="win311"] #codeEditor .ep-statusbar { background: #232323; }
[data-theme-mode="win311"] #codeEditor .ep-gutter { background: #232323; }

/* ------------------------------------------------------------------
 * Keyboard accessibility (a11y / WCAG 2.4.7 — focus visible)
 * Generic outline for all interactive elements inside the multi-tab
 * editor. Uses --theme-accent so user accent applies.
 * ------------------------------------------------------------------ */
.editor-pro-frame button:focus-visible,
.editor-pro-frame [tabindex]:focus-visible,
.editor-pro-frame input:focus-visible,
.editor-pro-frame select:focus-visible,
.editor-pro-frame textarea:focus-visible,
.editor-pro-frame .ep-tab:focus-visible,
.editor-pro-frame .ep-toolbar-btn:focus-visible {
    outline: 2px solid var(--theme-accent, #5fd1ff);
    outline-offset: 2px;
}