/* =============================================================
   Markdown to PDF — Unified Design System
   Matches frankfarukceviz.uk (D-Summary)
   ============================================================= */

:root {
    --bg-color: #F8F7F2;
    --text-primary: #111111;
    --text-secondary: #555555;
    --text-tertiary: #888888;
    --accent-color: #000000;
    --border-color: #e2e2e2;
    --font-family: "Inter", sans-serif;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 32px;
    --spacing-xl: 64px;

    --nav-height: 80px;
    --max-w: 1200px;
    --ease: 0.2s ease;

    /* App Specific */
    --editor-bg: #F8F7F2;
    --pane-header-bg: #F8F7F2;
}

[data-theme="dark"] {
    --bg-color: #2d2d2b;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --text-tertiary: #666666;
    --accent-color: #ffffff;
    --border-color: #40403d;
    --editor-bg: #2d2d2b;
    --pane-header-bg: #383835;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-color: #2d2d2b;
        --text-primary: #e0e0e0;
        --text-secondary: #a0a0a0;
        --text-tertiary: #666666;
        --accent-color: #ffffff;
        --border-color: #40403d;
        --editor-bg: #2d2d2b;
        --pane-header-bg: #383835;
    }
}

/* ----- Reset & Base ----- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    height: 100%;
    overflow: hidden; /* Prevent html (the real scroll root) from scrolling */
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ----- Layout ----- */
.app-container {
    flex: 1;
    min-height: 0; /* Allows flex item to shrink below content size */
    width: 100%;
    display: flex;
    flex-direction: column;
    margin-top: var(--nav-height);
}

/* ----- Navbar ----- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--ease);
}

.navbar__logo-img {
    height: 36px;
    width: auto;
    display: block;
    filter: invert(1);
}

[data-theme="dark"] .navbar__logo-img {
    filter: none;
}

.navbar__menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
    margin-left: auto;
}

.navbar__link {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: color var(--ease);
    position: relative;
    padding-bottom: 4px;
}

.navbar__link:hover,
.navbar__link.active {
    color: var(--text-primary);
}

.navbar__link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text-primary);
    transition: width var(--ease);
}

.navbar__link:hover::after,
.navbar__link.active::after {
    width: 100%;
}

.navbar__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.navbar__hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition:
        transform 0.3s ease,
        opacity 0.3s ease;
}

#themeToggle {
    margin-left: 16px;
    padding: 4px 8px;
    color: var(--text-secondary);
    transition: color var(--ease);
}
#themeToggle:hover {
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .navbar {
        padding: 0 20px;
    }
    .navbar__hamburger {
        display: flex;
    }
    .navbar__menu {
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        border-bottom: 1px solid var(--border-color);
    }
    .navbar__menu.is-open {
        max-height: 400px;
        padding: 16px 0;
    }
    .navbar__link {
        display: block;
        padding: 12px 24px;
        text-align: center;
    }
    .navbar__link::after {
        display: none;
    }
}

/* ----- Toolbar ----- */
.toolbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.toolbar__group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.button {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--ease);
}

.button:hover {
    border-color: var(--text-primary);
}

.button.primary {
    background: var(--text-primary);
    color: #fff;
    border-color: var(--text-primary);
}

[data-theme="dark"] .button.primary {
    color: #2d2d2b;
}

.button.primary:hover {
    background: transparent;
    color: var(--text-primary);
}

.button.publish-btn {
    background: #16a34a;
    color: #fff;
    border-color: #16a34a;
}

.button.publish-btn:hover {
    background: transparent;
    color: #16a34a;
}

.button.publish-btn:disabled {
    opacity: 0.6;
    cursor: default;
}

/* ----- Export Dropdown ----- */
.export-dropdown {
    position: relative;
}

.export-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    list-style: none;
    min-width: 140px;
    z-index: 200;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    overflow: hidden;
}

.export-menu.open {
    display: block;
}

.export-menu li button {
    display: block;
    width: 100%;
    padding: 10px 16px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    text-align: left;
    transition: background var(--ease);
}

.export-menu li button:hover {
    background: var(--border-color);
}

/* ----- Editor Layout ----- */
.editor-layout {
    display: flex;
    flex: 1;
    min-height: 0; /* Allows flex item to shrink so panes scroll internally */
    overflow: hidden;
    background-color: var(--border-color);
    gap: 1px;
}

.pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--editor-bg);
    overflow: hidden;
}

.pane-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    height: 40px;
    background: var(--pane-header-bg);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.pane-title {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 700;
    color: var(--text-tertiary);
}

/* ----- Content ----- */
.editor-wrapper,
.preview-wrapper {
    flex: 1;
    overflow: auto;
}

#markdown-input {
    width: 100%;
    height: 100%;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: "JetBrains Mono", monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    padding: 24px;
    resize: none;
    outline: none;
}

#preview-output {
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
    background: var(--editor-bg);
    color: var(--text-primary);
}

/* CSV/XML Tables */
.csv-table,
.xml-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
    font-size: 0.85rem;
    border: 0.25px solid gray;
}

.csv-table th,
.xml-table th {
    background: #d3d3d3;
    color: #000000;
    text-align: left;
    padding: 12px;
    border: 0.25px solid gray;
    font-weight: 600;
}

[data-theme="dark"] .csv-table th,
[data-theme="dark"] .xml-table th {
    background: #4a4a46;
    color: #ffffff;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .csv-table th,
    :root:not([data-theme="light"]) .xml-table th {
        background: #4a4a46;
        color: #ffffff;
    }
}

.csv-table td,
.xml-table td {
    padding: 10px 12px;
    border: 0.25px solid gray;
}

/* ----- Utilities ----- */
.hidden {
    display: none !important;
}
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 768px) {
    .editor-layout {
        flex-direction: column;
    }
    .toolbar {
        height: auto;
        padding: 12px;
        flex-wrap: wrap;
        gap: 12px;
    }
}

/* Markdown Styling in Preview */
.markdown-body h1 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.3rem;
    color: var(--accent-color);
}
.markdown-body h2 {
    font-size: 1.4rem;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    color: var(--accent-color);
}
.markdown-body h3 {
    font-size: 1.2rem;
    margin-top: 1.2rem;
    margin-bottom: 0.6rem;
    color: var(--accent-color);
}
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    color: var(--accent-color);
}
.markdown-body p {
    margin-bottom: 1rem;
}
.markdown-body code {
    background: rgba(0, 0, 0, 0.06);
    padding: 2px 4px;
    border-radius: 3px;
    font-family: "JetBrains Mono", monospace;
    font-size: 0.9em;
}
.markdown-body pre {
    background: rgba(0, 0, 0, 0.06);
    padding: 16px;
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: 1rem;
}
.markdown-body blockquote {
    border-left: 4px solid var(--border-color);
    padding-left: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}
.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    border: 0.25px solid gray;
}
.markdown-body table th {
    background: #d3d3d3;
    color: #000000;
    font-weight: 600;
    padding: 10px 12px;
    border: 0.25px solid gray;
    text-align: left;
}
.markdown-body table td {
    padding: 10px 12px;
    border: 0.25px solid gray;
}

[data-theme="dark"] .markdown-body table th {
    background: #4a4a46;
    color: #ffffff;
}
[data-theme="dark"] .markdown-body code,
[data-theme="dark"] .markdown-body pre {
    background: rgba(255, 255, 255, 0.07);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .markdown-body table th {
        background: #4a4a46;
        color: #ffffff;
    }
    :root:not([data-theme="light"]) .markdown-body code,
    :root:not([data-theme="light"]) .markdown-body pre {
        background: rgba(255, 255, 255, 0.07);
    }
}

/* ── Print Preview Overlay ────────────────────────────────────────────────── */
.preview-overlay {
    position: fixed;
    inset: 0;
    z-index: 9000;
    background: #4a4a4a;
    display: flex;
    flex-direction: column;
}

.preview-overlay__toolbar {
    background: #1a1a1a;
    color: #fff;
    padding: 0 24px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    gap: 16px;
}

.preview-overlay__info {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #aaa;
    white-space: nowrap;
}

.preview-overlay__actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.preview-overlay__hint {
    font-size: 0.68rem;
    color: #666;
    white-space: nowrap;
}

/* Scrollable page stack */
.preview-pages {
    flex: 1;
    overflow-y: auto;
    padding: 40px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0;
}

/* A4 page card (794 × 1123px at 96dpi) */
.pdf-page {
    width: 794px;
    min-height: 1123px;
    background: #fff;
    box-shadow: 0 4px 28px rgba(0, 0, 0, 0.4);
    position: relative;
    flex-shrink: 0;
    padding: 57px; /* 15mm margin at 96dpi */
    box-sizing: border-box;
    overflow: hidden;
}

.pdf-page-num {
    position: absolute;
    bottom: 16px;
    right: 20px;
    font-size: 10px;
    color: #ccc;
    font-family: "Inter", sans-serif;
    pointer-events: none;
}

/* Break zone — subtle click target between elements within a page */
.break-zone {
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    opacity: 0;
    transition: opacity 0.15s;
    margin: 1px 0;
}

.break-zone:hover {
    opacity: 1;
}

.break-zone::before {
    content: "";
    position: absolute;
    inset: 50% 0;
    height: 1px;
    background: #0066cc;
    opacity: 0.4;
}

.break-zone__label {
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #0066cc;
    background: #e8f0ff;
    padding: 2px 10px;
    border-radius: 3px;
    border: 1px dashed #0066cc;
    position: relative; /* sits above the ::before line */
    pointer-events: none;
}

/* Page divider — visual separator between pages in the preview */
.page-divider {
    width: 794px;
    height: 44px;
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
    padding: 0 4px;
}

.page-divider__line {
    flex: 1;
    height: 1px;
    background: #777;
    opacity: 0.5;
}

.page-divider__label {
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #999;
    white-space: nowrap;
}

.page-divider--forced {
    cursor: pointer;
}

.page-divider--forced .page-divider__line {
    background: #c0392b;
    opacity: 0.7;
}

.page-divider--forced .page-divider__label {
    color: #c0392b;
}

.page-divider--forced:hover .page-divider__label {
    text-decoration: underline;
}

/* ── WYSIWYG Print — prints exactly the preview pages, nothing else ─────── */
@page {
    size: A4 portrait;
    margin: 0; /* margins are handled by .pdf-page padding (57px = 15mm) */
}

@media print {
    /* Remove the scroll-container constraints so all pages can flow */
    html,
    body {
        height: auto !important;
        overflow: visible !important;
    }

    /* Hide every body-level element except the preview overlay */
    body > *:not(#preview-overlay) {
        display: none !important;
    }

    /* Make the overlay a normal block so pages flow on the page */
    .preview-overlay {
        position: static !important;
        display: block !important;
        background: white !important;
    }

    /* Hide the toolbar chrome */
    .preview-overlay__toolbar {
        display: none !important;
    }

    /* Let pages stack as a normal block flow */
    .preview-pages {
        display: block !important;
        padding: 0 !important;
        overflow: visible !important;
    }

    /* Each page card = exactly one A4 sheet */
    .pdf-page {
        width: 210mm !important;
        height: 297mm !important;
        padding: 15mm !important;
        margin: 0 !important;
        box-shadow: none !important;
        overflow: hidden !important;
        break-after: page !important;
        page-break-after: always !important;
    }

    .pdf-page:last-child {
        break-after: auto !important;
        page-break-after: auto !important;
    }

    /* UI elements inside pages must not appear in print */
    .break-zone,
    .page-divider {
        display: none !important;
    }

    /* Dim the page number so it reads as secondary info */
    .pdf-page-num {
        color: #999 !important;
    }
}