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

:root {
    --bg:       #0d1b2a;
    --bg2:      #1a2a3a;
    --border:   #2a4a6a;
    --accent:   #4fc3f7;
    --accent2:  #1565c0;
    --text:     #e8edf2;
    --muted:    #90a4ae;
    --danger:   #ef5350;
    --success:  #66bb6a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    font-size: 15px;
    line-height: 1.6;
}

/* ── Centered card layout (login/register) ── */
.center-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.25rem;
}

.card-sub {
    color: var(--muted);
    font-size: 0.9rem;
    margin-bottom: 1.75rem;
}

/* ── Forms ── */
.form-group { margin-bottom: 1.1rem; }

label {
    display: block;
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 0.35rem;
    font-weight: 500;
}

input[type=text],
input[type=email],
input[type=password],
select {
    width: 100%;
    background: #0d1b2a;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 0.65rem 0.85rem;
    font-size: 0.95rem;
    transition: border-color .2s;
    outline: none;
}

input:focus, select:focus { border-color: var(--accent); }

.btn {
    display: inline-block;
    width: 100%;
    padding: 0.75rem;
    background: var(--accent2);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: background .2s;
    margin-top: 0.5rem;
}
.btn:hover { background: #1976d2; }

/* ── Alerts ── */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
}
.alert-error   { background: rgba(239,83,80,.15); border: 1px solid var(--danger);  color: #ef9a9a; }
.alert-success { background: rgba(102,187,106,.15); border: 1px solid var(--success); color: #a5d6a7; }

/* ── Link ── */
.card-link { display: block; text-align: center; margin-top: 1.25rem; font-size: 0.88rem; color: var(--muted); }
.card-link a { color: var(--accent); text-decoration: none; }
.card-link a:hover { text-decoration: underline; }

/* ── Logo/header ── */
.card-logo { font-size: 2rem; margin-bottom: 0.75rem; }

/* ── Nav bar (dashboard pages) ── */
.navbar {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.navbar .brand { font-weight: 700; color: var(--accent); font-size: 1.1rem; text-decoration: none; }
.navbar .nav-links { display: flex; gap: 1rem; margin-left: auto; align-items: center; }
.navbar .nav-links a { color: var(--muted); text-decoration: none; font-size: 0.9rem; }
.navbar .nav-links a:hover { color: var(--text); }
.navbar .nav-user { color: var(--muted); font-size: 0.85rem; }

/* ── Main content ── */
.main { padding: 2.5rem 2rem; max-width: 1100px; margin: 0 auto; }
.page-title { font-size: 1.6rem; font-weight: 700; color: var(--accent); margin-bottom: 0.25rem; }
.page-sub   { color: var(--muted); margin-bottom: 2rem; }

/* ═══════════════════════════════════════════════════════════════
   DOCS — vier-kolom workspace
   ═══════════════════════════════════════════════════════════════ */

.doc-workspace {
    display: flex;
    height: calc(100vh - 48px);
    overflow: hidden;
    background: var(--bg);
}

/* ── Kolom basis ── */
.dcol {
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
    transition: width 0.2s ease, min-width 0.2s ease;
    overflow: hidden;
    flex-shrink: 0;
}
.dcol-4 { border-right: none; flex-shrink: 0; }
.dcol-3 { flex: 1; min-width: 0; border-right: 1px solid var(--border); overflow: hidden; }

.dcol-1 { width: 200px; min-width: 200px; }
.dcol-2 { width: 270px; min-width: 270px; }
.dcol-4 { width: 280px; min-width: 280px; }

.dcol-1.collapsed,
.dcol-2.collapsed,
.dcol-4.collapsed { width: 32px; min-width: 32px; }

/* ── Kolom header ── */
.dcol-head {
    display: flex;
    align-items: center;
    height: 40px;
    padding: 0 0.5rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    gap: 0.4rem;
}
.dcol-head-title {
    flex: 1;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--muted);
    white-space: nowrap;
    overflow: hidden;
}
.dcol-head-actions { display: flex; align-items: center; gap: 0.25rem; }

.dcol-toggle {
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
    transition: color 0.15s, background 0.15s;
}
.dcol-toggle:hover { color: var(--accent); background: rgba(79,195,247,.1); }

/* Collapsed state */
.dcol.collapsed .dcol-head { justify-content: center; padding: 0; }
.dcol.collapsed .dcol-head-title { display: none; }
.dcol.collapsed .dcol-head-actions > :not(.dcol-toggle) { display: none; }
.dcol.collapsed .dcol-body { display: none; }

/* ── Kolom body (scrollbaar) ── */
.dcol-body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}
.dcol-body::-webkit-scrollbar { width: 4px; }
.dcol-body::-webkit-scrollbar-track { background: transparent; }
.dcol-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── Empty state ── */
.dcol-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--muted);
    font-size: 0.85rem;
    text-align: center;
    padding: 2rem;
    gap: 0.5rem;
}
.dcol-empty .empty-icon { font-size: 2rem; opacity: 0.4; }

/* ── Folder tree (kolom 1) ── */
.ftree { list-style: none; padding: 0.25rem 0; margin: 0; }
.ftree li { margin: 0; }

.ftree-label {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.38rem 0.75rem;
    cursor: pointer;
    font-size: 0.87rem;
    color: var(--text);
    user-select: none;
    transition: background 0.1s;
}
.ftree-label:hover { background: rgba(79,195,247,.07); }
.ftree-label.active { background: rgba(79,195,247,.13); color: var(--accent); }

.ftree-arrow {
    font-size: 0.6rem;
    color: var(--muted);
    transition: transform 0.15s;
    width: 0.75rem;
    display: inline-block;
    flex-shrink: 0;
}
.ftree-arrow.open { transform: rotate(90deg); }
.ftree-arrow.empty { opacity: 0; }

.ftree-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.ftree-children { display: none; padding-left: 1rem; }
.ftree-children.open { display: block; }

/* ── Add-folder inline form ── */
.folder-add-form {
    display: none;
    padding: 0.5rem 0.75rem;
    border-top: 1px solid var(--border);
}
.folder-add-form.open { display: flex; gap: 0.4rem; }
.folder-add-form input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    padding: 0.3rem 0.5rem;
    font-size: 0.82rem;
}
.folder-add-form button {
    background: var(--accent2);
    border: none;
    color: #fff;
    border-radius: 4px;
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
    cursor: pointer;
}

/* ── Document cards (kolom 2) ── */
.doc-card {
    padding: 0.65rem 0.75rem;
    border-bottom: 1px solid #1a2e42;
    cursor: pointer;
    transition: background 0.1s;
    display: block;
}
.doc-card:hover { background: rgba(79,195,247,.06); }
.doc-card.active { background: rgba(79,195,247,.1); border-left: 3px solid var(--accent); padding-left: calc(0.75rem - 3px); }

.doc-card-title {
    font-size: 0.88rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 0.3rem;
}
.doc-card-meta {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.73rem;
    color: var(--muted);
    flex-wrap: wrap;
}

/* Status dot */
.sdot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}
.sdot-released  { background: #66bb6a; }
.sdot-bewerking { background: #ffa726; }
.sdot-concept   { background: #546e7a; }

.btn-release {
    background: none;
    border: 1px solid #546e7a;
    color: #78909c;
    border-radius: 3px;
    padding: .1rem .35rem;
    font-size: .68rem;
    cursor: pointer;
    margin-left: auto;
    flex-shrink: 0;
    transition: border-color 0.15s, color 0.15s;
}
.btn-release:hover { border-color: #66bb6a; color: #66bb6a; }

/* ── Add-doc inline form ── */
.doc-add-form {
    display: none;
    padding: 0.5rem 0.75rem;
    border-top: 1px solid var(--border);
    gap: 0.4rem;
}
.doc-add-form.open { display: flex; }
.doc-add-form input {
    flex: 1;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    padding: 0.3rem 0.5rem;
    font-size: 0.82rem;
}
.doc-add-form button {
    background: var(--accent2);
    border: none;
    color: #fff;
    border-radius: 4px;
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
    cursor: pointer;
}

/* ── Document content (kolom 3) ── */
.doc-content-wrap { height: 100%; display: flex; flex-direction: column; }

.doc-content-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0 1rem;
    height: 40px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    font-size: 0.82rem;
    color: var(--muted);
}
.doc-content-bar .doc-title-bar { font-weight: 600; color: var(--text); font-size: 0.9rem; }
.doc-content-bar .doc-version-badge {
    padding: .15rem .45rem;
    border-radius: 10px;
    font-size: .72rem;
    font-weight: 600;
}
.vbadge-released  { background: rgba(102,187,106,.2); color: #81c784; border: 1px solid #388e3c; }
.vbadge-bewerking { background: rgba(255,167,38,.2);  color: #ffb74d; border: 1px solid #e65100; }
.vbadge-concept   { background: rgba(84,110,122,.2);  color: #90a4ae; border: 1px solid #455a64; }

.doc-content-body {
    flex: 1;
    overflow-y: auto;
    padding: 2rem 2.5rem;
}
.doc-content-body::-webkit-scrollbar { width: 5px; }
.doc-content-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Rendered document typography */
.doc-rendered { max-width: 780px; line-height: 1.75; }
.doc-rendered h1 { font-size: 1.6rem; color: var(--accent); margin: 0 0 1rem; }
.doc-rendered h2 { font-size: 1.2rem; color: var(--text); margin: 1.75rem 0 0.6rem; border-bottom: 1px solid var(--border); padding-bottom: 0.3rem; }
.doc-rendered h3 { font-size: 1rem; color: var(--text); margin: 1.25rem 0 0.4rem; }
.doc-rendered p  { margin: 0 0 0.85rem; color: #cfd8dc; }
.doc-rendered ul, .doc-rendered ol { margin: 0 0 0.85rem 1.5rem; color: #cfd8dc; }
.doc-rendered li { margin-bottom: 0.3rem; }
.doc-rendered strong { color: var(--text); }
.doc-rendered em { color: #b0bec5; }
.doc-rendered hr { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }
.doc-rendered table { width: 100%; border-collapse: collapse; margin: 0 0 1rem; font-size: 0.88rem; }
.doc-rendered th { background: #0f2235; color: var(--accent); padding: 0.5rem 0.75rem; text-align: left; border: 1px solid var(--border); }
.doc-rendered td { padding: 0.45rem 0.75rem; border: 1px solid var(--border); color: #cfd8dc; vertical-align: top; }
.doc-rendered tr:hover td { background: rgba(79,195,247,.03); }
.doc-rendered code { background: #0a1a2a; border: 1px solid var(--border); padding: .1rem .35rem; border-radius: 3px; font-size: .88em; }
.doc-rendered blockquote { border-left: 3px solid var(--accent2); padding: 0.5rem 1rem; margin: 0 0 0.85rem; color: #90a4ae; background: rgba(21,101,192,.08); }

/* Block hover voor comment anchoring */
.doc-rendered [id^="block-"] { position: relative; }
.doc-rendered [id^="block-"]:hover { background: rgba(79,195,247,.04); border-radius: 3px; }
.doc-rendered [id^="block-"]:hover .block-comment-btn { opacity: 1; }

.block-comment-btn {
    position: absolute;
    right: -2rem;
    top: 0.1rem;
    opacity: 0;
    background: none;
    border: 1px solid var(--border);
    color: var(--muted);
    border-radius: 4px;
    padding: .1rem .35rem;
    font-size: .72rem;
    cursor: pointer;
    transition: opacity 0.15s;
    white-space: nowrap;
}
.block-comment-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ── Comments (kolom 4) ── */
.comment-item {
    padding: 0.75rem;
    border-bottom: 1px solid #1a2e42;
}
.comment-item.resolved { opacity: 0.45; }
.comment-header {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.35rem;
    font-size: 0.75rem;
    color: var(--muted);
}
.comment-anchor {
    background: rgba(79,195,247,.12);
    color: var(--accent);
    border-radius: 3px;
    padding: .05rem .3rem;
    font-size: .68rem;
    font-family: monospace;
}
.comment-author { font-weight: 600; color: var(--text); }
.comment-text { font-size: 0.84rem; color: #cfd8dc; line-height: 1.5; margin-bottom: 0.4rem; }
.comment-actions { display: flex; gap: 0.5rem; }
.btn-comment-action {
    background: none;
    border: none;
    color: var(--muted);
    font-size: 0.72rem;
    cursor: pointer;
    padding: 0;
}
.btn-comment-action:hover { color: var(--accent); }

/* Comment add form */
.comment-add-form { padding: 0.75rem; border-top: 1px solid var(--border); }
.comment-add-form textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    padding: 0.5rem;
    font-size: 0.83rem;
    resize: vertical;
    min-height: 70px;
    font-family: inherit;
    line-height: 1.5;
}
.comment-add-form textarea:focus { outline: none; border-color: var(--accent); }
.comment-add-form .comment-anchor-label {
    font-size: 0.72rem;
    color: var(--accent);
    margin-bottom: 0.35rem;
    display: block;
}
.comment-submit {
    margin-top: 0.4rem;
    width: 100%;
    padding: 0.45rem;
    background: var(--accent2);
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 0.82rem;
    cursor: pointer;
}
.comment-submit:hover { background: #1976d2; }

/* ── Release modal ── */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal-box {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.75rem;
    width: 380px;
    box-shadow: 0 16px 48px rgba(0,0,0,.5);
}
.modal-box h3 { font-size: 1.1rem; color: var(--accent); margin-bottom: 1rem; }
.modal-box .form-group { margin-bottom: 0.85rem; }
.modal-box label { font-size: 0.82rem; color: var(--muted); display: block; margin-bottom: 0.3rem; }
.modal-box input, .modal-box textarea {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 5px;
    color: var(--text);
    padding: 0.5rem 0.65rem;
    font-size: 0.9rem;
}
.modal-box textarea { resize: vertical; min-height: 80px; font-family: inherit; }
.modal-actions { display: flex; gap: 0.75rem; margin-top: 1rem; }
.modal-actions .btn { flex: 1; padding: 0.6rem; }
.btn-cancel { background: none; border: 1px solid var(--border); color: var(--muted); border-radius: 6px; cursor: pointer; font-size: 0.9rem; }
.btn-cancel:hover { border-color: var(--accent); color: var(--accent); }

/* ── Icon button (head) ── */
.icon-btn {
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0.2rem 0.3rem;
    border-radius: 4px;
    transition: color 0.15s, background 0.15s;
}
.icon-btn:hover { color: var(--accent); background: rgba(79,195,247,.1); }