/* ── BASE ────────────────────────────────────────────────────────────────── */
:root {
    --accent:      #4facfe;
    --accent-dark: #0066cc;
    --accent-dim:  rgba(79, 172, 254, 0.12);
    --accent-mid:  rgba(79, 172, 254, 0.28);
    --header-bg:   #111;
    --toolbar-bg:  #f4f5f7;
    --border:      rgba(0,0,0,0.08);
    --border-dark: rgba(0,0,0,0.14);
    --text:        #1a1a1a;
    --text-muted:  rgba(0,0,0,0.5);
    --bg:          #f4f5f7;
    --surface:     #fff;
    --header-h:    48px;
    --toolbar-h:   38px;
    --status-h:    28px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: Inter, 'Segoe UI', system-ui, sans-serif;
    font-size: 13px;
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ── HEADER ─────────────────────────────────────────────────────────────── */
.app-header {
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 16px;
    background: var(--header-bg);
    flex-shrink: 0;
    z-index: 100;
}

.header-left  { display: flex; align-items: center; flex-shrink: 0; }
.header-center{ display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.header-right { display: flex; align-items: center; gap: 6px; margin-left: auto; }

.app-logo {
    display: flex;
    align-items: center;
    gap: 7px;
    font-weight: 600;
    font-size: 13px;
    color: #fff;
    white-space: nowrap;
    letter-spacing: 0.2px;
}
.app-logo svg { color: var(--accent); }

/* ── FILE BUTTONS ───────────────────────────────────────────────────────── */
.file-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.07);
    color: rgba(255,255,255,0.85);
    cursor: pointer;
    font-size: 12px;
    font-family: inherit;
    white-space: nowrap;
    transition: background .15s, border-color .15s;
}
.file-btn:hover { background: rgba(255,255,255,0.13); border-color: rgba(255,255,255,0.3); }
.file-btn--secondary { border-style: dashed; }
.file-btn input[type=file] { display: none; }
.file-btn.loaded { border-color: var(--accent); color: var(--accent); }

/* ── TAB BAR ────────────────────────────────────────────────────────────── */
.tab-bar {
    display: flex;
    gap: 2px;
    margin-left: auto;
}

.tab-btn {
    padding: 5px 14px;
    border-radius: 20px;
    border: 1px solid transparent;
    background: transparent;
    color: rgba(255,255,255,0.55);
    font-family: inherit;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: background .15s, color .15s;
    white-space: nowrap;
}
.tab-btn:hover:not(:disabled) { background: rgba(255,255,255,0.09); color: rgba(255,255,255,0.9); }
.tab-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
.tab-btn:disabled { opacity: .35; cursor: not-allowed; }

/* ── ICON BUTTONS (header right) ────────────────────────────────────────── */
.icon-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 11px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.07);
    color: rgba(255,255,255,0.8);
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    transition: background .15s;
}
.icon-btn:hover { background: rgba(255,255,255,0.14); }
.icon-btn--primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.icon-btn--primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

/* ── TOOLBAR ────────────────────────────────────────────────────────────── */
.toolbar-bar {
    height: var(--toolbar-h);
    display: flex;
    align-items: center;
    gap: 0;
    padding: 0 12px;
    background: var(--surface);
    border-bottom: 1px solid var(--border-dark);
    flex-shrink: 0;
    overflow-x: auto;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 2px;
}

.toolbar-sep {
    width: 1px;
    height: 18px;
    background: var(--border-dark);
    margin: 0 8px;
    flex-shrink: 0;
}

.tool-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 26px;
    padding: 0 8px;
    border-radius: 6px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text);
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    transition: background .12s, border-color .12s;
    white-space: nowrap;
}
.tool-btn:hover { background: var(--accent-dim); border-color: rgba(79,172,254,0.3); color: var(--accent-dark); }
.tool-btn.active { background: var(--accent-dim); border-color: rgba(79,172,254,0.4); color: var(--accent-dark); }

.tool-select {
    height: 26px;
    padding: 0 6px;
    border-radius: 6px;
    border: 1px solid var(--border-dark);
    background: var(--surface);
    color: var(--text);
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
}

.page-nav { gap: 4px; }

.page-counter {
    font-size: 12px;
    color: var(--text-muted);
    padding: 0 6px;
    white-space: nowrap;
}

/* ── STATUS BAR ─────────────────────────────────────────────────────────── */
.status-bar {
    height: var(--status-h);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 16px;
    background: #fffbeb;
    border-bottom: 1px solid #fde68a;
    font-size: 12px;
    color: #92400e;
    flex-shrink: 0;
}
.status-bar[hidden] { display: none; }

.status-spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(146,64,14,0.2);
    border-top-color: #92400e;
    border-radius: 50%;
    animation: spin .7s linear infinite;
    flex-shrink: 0;
}
.status-progress { margin-left: auto; font-size: 11px; opacity: .75; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ── VIEW PANELS ────────────────────────────────────────────────────────── */
.view-panel {
    display: none;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}
.view-panel.active { display: flex; }

/* ── PDF CANVAS ─────────────────────────────────────────────────────────── */
.canvas-scroll {
    flex: 1;
    overflow-y: auto;
    /* display: flex; */
    /* flex-direction: column; */
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: #e5e7eb;
}

.page-wrapper {
    background: #fff;
    box-shadow: 0 2px 12px rgba(0,0,0,.1);
    position: relative;
    overflow: hidden;
    scroll-margin-top: 24px;
}

.page-wrapper canvas { display: block; }

.editable-text-layer {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 10;
}

.editable-text-layer span {
    position: absolute;
    white-space: pre;
    cursor: text;
    transform-origin: 0% 0%;
    /* color: transparent; */
    line-height: 1;
    border-radius: 2px;
}
.editable-text-layer span:hover { color: rgba(0,0,0,.05); background: rgba(79,172,254,.08); }

/* ── PROSE AREA (HTML view + visual diff HTML pane) ─────────────────────── */
.prose-area {
    flex: 1;
    overflow-y: auto;
    padding: 40px 48px;
    background: var(--surface);
    outline: none;
    line-height: 1.65;
}
.prose-area:focus { outline: none; }

.prose-area h1 { font-size: 2em;   margin: .67em 0; line-height: 1.2; }
.prose-area h2 { font-size: 1.5em; margin: .75em 0; line-height: 1.3; }
.prose-area h3 { font-size: 1.17em;margin: .83em 0; }
.prose-area h4 { font-size: 1em;   margin: 1em 0; font-weight: 600; }
.prose-area p  { margin: .7em 0; }
.prose-area ul, .prose-area ol { padding-left: 1.6em; margin: .7em 0; }
.prose-area li { margin: .25em 0; }
.prose-area img { max-width: 100%; height: auto; display: block; margin: 1em auto; }

.prose-area table {
    border-collapse: collapse;
    width: 100%;
    margin: 1.2em 0;
    font-size: .95em;
}
.prose-area th, .prose-area td {
    border: 1px solid #d1d5db;
    padding: 7px 12px;
    text-align: left;
}
.prose-area th { background: #f9fafb; font-weight: 600; }

/* Crosshair table highlight (from tableLogic) */
.prose-area td.highlight-row,
.prose-area th.highlight-row { background: rgba(79,172,254,.10); }
.prose-area td.highlight-col,
.prose-area th.highlight-col { background: rgba(79,172,254,.10); }
.prose-area td.highlight-row.highlight-col,
.prose-area th.highlight-row.highlight-col { background: rgba(79,172,254,.22); }

/* ── MONACO CONTAINERS ──────────────────────────────────────────────────── */
.monaco-fill {
    flex: 1;
    width: 100%;
    min-height: 0;
}

/* ── VISUAL DIFF LAYOUT ─────────────────────────────────────────────────── */
.visual-diff-layout {
    flex-direction: row;
}

.vd-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}

.vd-pane-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 14px;
    background: var(--toolbar-bg);
    border-bottom: 1px solid var(--border-dark);
    flex-shrink: 0;
}

.vd-label {
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .6px;
    padding: 2px 8px;
    border-radius: 4px;
}
.vd-label--pdf  { background: rgba(79,172,254,.12); color: var(--accent-dark); }
.vd-label--html { background: rgba(76,175,80,.12);  color: #2e7d32; }

.vd-hint { font-size: 11px; color: var(--text-muted); }

.vd-divider {
    width: 1px;
    background: var(--border-dark);
    flex-shrink: 0;
    cursor: col-resize;
    position: relative;
    transition: background .15s;
}
.vd-divider:hover, .vd-divider.dragging { background: var(--accent); width: 2px; }

/* ── CONTEXT MENU ───────────────────────────────────────────────────────── */
.ctx-menu {
    position: fixed;
    z-index: 9000;
    background: var(--surface);
    border: 1px solid var(--border-dark);
    border-radius: 8px;
    padding: 4px;
    min-width: 190px;
    box-shadow: 0 4px 16px rgba(0,0,0,.12);
}
.ctx-menu[hidden] { display: none; }

.ctx-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 7px 10px;
    border: none;
    border-radius: 5px;
    background: transparent;
    color: var(--text);
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    text-align: left;
    transition: background .1s;
}
.ctx-item:hover { background: var(--accent-dim); color: var(--accent-dark); }

/* ── TOAST ──────────────────────────────────────────────────────────────── */
.toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 18px;
    border-radius: 20px;
    background: rgba(17,17,17,.92);
    color: #fff;
    font-size: 12px;
    border: 1px solid rgba(255,255,255,0.1);
    z-index: 9999;
    opacity: 0;
    transition: opacity .25s;
    pointer-events: none;
    white-space: nowrap;
}
.toast.visible { opacity: 1; }
.toast[hidden] { display: none; }
.toast--success { border-color: rgba(76,175,80,.5); }
.toast--error   { border-color: rgba(244,67,54,.5);  }

/* ── EMPTY HINT ─────────────────────────────────────────────────────────── */
.empty-hint {
    color: var(--text-muted);
    font-size: 14px;
    text-align: center;
    margin-top: 80px;
    width: 100%;
}

/* ── PRINT ──────────────────────────────────────────────────────────────── */
@media print {
    body { overflow: visible; height: auto; }
    .app-header, .toolbar-bar, .status-bar { display: none !important; }
    .view-panel { display: block !important; height: auto; overflow: visible; }
    #view-html { display: block !important; }
    .prose-area { padding: 0; overflow: visible; }
}