:root {
    --color-bg: #f1f3f7;
    --color-surface: #ffffff;
    --color-border: #e4e7ee;
    --color-text: #1c2230;
    --color-muted: #6b7385;
    --color-primary: #2b57d9;
    --color-primary-dark: #1d3f9e;
    --color-primary-light: #eaf0ff;
    --color-danger: #d1392a;
    --color-danger-light: #fbe4e1;
    --color-success: #1a8754;
    --color-success-light: #dff4e8;
    --color-warning: #b8720b;
    --color-warning-light: #fbecd6;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow-card: 0 1px 2px rgba(20, 25, 40, 0.04), 0 4px 14px rgba(20, 25, 40, 0.05);
    --shadow-pop: 0 8px 28px rgba(20, 25, 40, 0.12);
    --sidebar-width: 236px;

    /* Spacing-Skala (4px-Raster) */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-7: 32px;
    --space-8: 40px;

    /* Typografie-Skala */
    --font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-xs: 11.5px;
    --font-size-sm: 12.5px;
    --font-size-base: 14px;
    --font-size-md: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 21px;
    --font-size-xxl: 28px;

    /* Z-Index-Skala */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 500;
    --z-toast: 600;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0f1220;
        --color-surface: #171b2c;
        --color-border: #2a2f45;
        --color-text: #e8eaf3;
        --color-muted: #929aB5;
        --color-primary: #6690ff;
        --color-primary-dark: #a9c1ff;
        --color-primary-light: #1c2540;
        --color-danger: #ff7a6b;
        --color-danger-light: #3a1e1e;
        --color-success: #4ed394;
        --color-success-light: #123324;
        --color-warning: #f0b64c;
        --color-warning-light: #3a2c10;
        --shadow-card: 0 1px 2px rgba(0,0,0,0.3), 0 4px 14px rgba(0,0,0,0.25);
        --shadow-pop: 0 8px 28px rgba(0,0,0,0.45);
    }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: var(--font-size-base);
    line-height: 1.45;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-weight: 700; letter-spacing: -0.01em; }

/* ---------- Sidebar layout ---------- */
body.with-sidebar { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
}
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 18px;
}
.brand-mark {
    width: 32px; height: 32px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700;
    font-size: 15px;
    flex-shrink: 0;
}
.brand-name { font-weight: 700; font-size: 15px; }

.sidebar nav { display: flex; flex-direction: column; gap: 2px; padding: 8px 12px; flex: 1; }
.sidebar nav a {
    display: flex; align-items: center; gap: 11px;
    padding: 9px 12px;
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    font-weight: 500;
    font-size: 13.5px;
}
.sidebar nav a svg {
    width: 18px; height: 18px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}
.sidebar nav a svg .icon-accent { stroke: var(--color-success); }
.sidebar nav a:hover { background: var(--color-bg); color: var(--color-text); text-decoration: none; }
.sidebar nav a.active { background: var(--color-primary-light); color: var(--color-primary-dark); }
.sidebar nav a.active svg { stroke: var(--color-primary-dark); }

.sidebar-footer { padding: 14px 18px 18px; border-top: 1px solid var(--color-border); }
.sidebar-user { font-size: 12.5px; color: var(--color-muted); margin-bottom: 4px; }
.sidebar-logout { font-size: 13px; color: var(--color-muted); }
.sidebar-logout:hover { color: var(--color-danger); }

.main { flex: 1; min-width: 0; }
body.no-sidebar .main { width: 100%; }

.container { max-width: 1120px; margin: 0 auto; padding: 28px 28px 60px; }

/* ---------- Headings & cards ---------- */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--space-6); flex-wrap: wrap; gap: var(--space-3); }
.page-header h1 { font-size: var(--font-size-xl); margin: 0; display: flex; align-items: center; gap: var(--space-2); }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: var(--space-6);
    margin-bottom: var(--space-5);
    overflow-x: auto;
}
.card h2 { font-size: var(--font-size-md); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; }
table.list th, table.list td { text-align: left; padding: 11px 10px; border-bottom: 1px solid var(--color-border); }
table.list th { color: var(--color-muted); font-weight: 600; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.05em; }
table.list tbody tr { transition: background 0.1s ease; }
table.list tbody tr:hover { background: var(--color-bg); }
table.list tbody tr:last-child td { border-bottom: none; }
table.list td.num, table.list th.num { text-align: right; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 15px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    font-size: 13.5px;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}
.btn:hover { background: var(--color-bg); text-decoration: none; }
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; box-shadow: 0 2px 8px rgba(43,87,217,0.28); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }
.btn-danger { background: var(--color-danger); border-color: var(--color-danger); color: #fff; }
.btn-danger:hover { filter: brightness(0.92); }
.btn-sm { padding: 5px 11px; font-size: 12px; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 600; font-size: 12.5px; color: var(--color-muted); }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date], input[type=file], textarea, select {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    font-family: inherit;
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color 0.12s ease, box-shadow 0.12s ease;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}
textarea { resize: vertical; }
.hint { color: var(--color-muted); font-size: 12px; margin-top: 4px; }

/* ---------- Badges ---------- */
.badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 999px; font-size: 11.5px; font-weight: 700; letter-spacing: 0.02em; }
.badge-grau { background: #e7e9ef; color: #4b5262; }
.badge-blau { background: var(--color-primary-light); color: var(--color-primary-dark); }
.badge-gruen { background: var(--color-success-light); color: var(--color-success); }
.badge-rot { background: var(--color-danger-light); color: var(--color-danger); }
.badge-gelb { background: var(--color-warning-light); color: var(--color-warning); }

/* ---------- Flash messages ---------- */
.flash { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 13.5px; }
.flash-success { background: var(--color-success-light); color: var(--color-success); }
.flash-error { background: var(--color-danger-light); color: var(--color-danger); }

/* ---------- Item tables (Angebot/Rechnung Positionen) ---------- */
.items-table input, .items-table select, .items-table textarea { padding: 7px 9px; font-size: 13px; font-family: inherit; }
.items-table td { padding: 5px; vertical-align: top; }
.items-table td.pos-main-cell { min-width: 200px; }
.items-table .pos-main-cell-inner { display: flex; flex-direction: column; gap: 5px; }
.items-table .pos-main-cell-inner .article-select { font-size: 12px; color: var(--color-muted); }
.items-table .pos-main-cell-inner .beschreibung { resize: vertical; color: var(--color-muted); width: 100%; }
.items-table th { text-align: left; font-size: 11.5px; color: var(--color-muted); text-transform: uppercase; letter-spacing: 0.04em; padding: 6px 5px; }
.totals-box { max-width: 340px; margin-left: auto; }
.totals-box table td { padding: 5px 0; }
.totals-box td.value { text-align: right; }
.totals-box tr.grand td { font-weight: 700; font-size: 17px; border-top: 1px solid var(--color-border); padding-top: 10px; }

/* Verschieben-Buttons (Positionen umsortieren) */
.items-table td.move-cell { text-align: center; padding-top: 8px; }
.items-table .move-cell-inner { display: flex; flex-direction: column; gap: 2px; }
.btn-move {
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-muted);
    border-radius: 4px;
    width: 22px; height: 18px;
    line-height: 1;
    font-size: 9px;
    cursor: pointer;
    padding: 0;
}
.btn-move:hover { background: var(--color-bg); color: var(--color-text); }

/* Alternativposition */
.alt-checkbox {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 11.5px; color: var(--color-muted); font-weight: 400;
    margin-right: 6px; white-space: nowrap;
}
.item-actions { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 4px; }
tr.item-row.alt-row { background: var(--color-bg); }
tr.item-row.alt-row .line-total { font-style: italic; color: var(--color-muted); }

/* Textposition / Seitenumbruch-Zeilen */
.text-row-cell textarea.text-content { width: 100%; resize: vertical; }
.pagebreak-cell {
    text-align: center;
    padding: 8px 0 !important;
}
.pagebreak-label {
    display: inline-block;
    font-size: 11.5px;
    color: var(--color-muted);
    letter-spacing: 0.03em;
    border-top: 1px dashed var(--color-border);
    border-bottom: 1px dashed var(--color-border);
    padding: 4px 14px;
}

/* Alternativpositionen-Summenbox */
.alt-totals-table { max-width: 340px; margin-left: auto; margin-top: 8px; color: var(--color-muted); font-size: 13px; }
.alt-totals-table td { padding: 3px 0; }
.alt-totals-table td.value { text-align: right; }

/* Auswahldialog "Neue Position hinzufügen" */
.position-choice-box { max-width: 460px; }
.position-choice-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: var(--space-4); }
.position-choice {
    display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
    width: 100%; text-align: left; padding: 10px 14px;
}
.position-choice strong { font-size: 14px; }
.position-choice span { font-size: 12px; color: var(--color-muted); font-weight: 400; }
.position-choice:hover { background: var(--color-primary-light); border-color: var(--color-primary); }

/* ---------- Login ---------- */
body.no-sidebar {
    min-height: 100vh;
    background: radial-gradient(circle at top, var(--color-primary-light) 0%, var(--color-bg) 55%);
}
.login-wrapper { max-width: 380px; margin: 0 auto; padding-top: 100px; }
.login-wrapper .card { padding: 34px 32px; box-shadow: var(--shadow-pop); }
.login-wrapper h1 { font-size: 20px; margin: 4px 0 4px; }
.login-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }

/* ---------- Misc ---------- */
.actions-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; align-items: center; }
.muted { color: var(--color-muted); }
.text-right { text-align: right; }

.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: var(--space-4) var(--space-5);
}
.stat-card.stat-danger { border-left-color: var(--color-danger); }
.stat-card.stat-neutral { border-left-color: var(--color-muted); }
.stat-card.stat-success { border-left-color: var(--color-success); }
.stat-card .value { font-size: var(--font-size-xxl); font-weight: 700; line-height: 1.1; }
.stat-card .label { color: var(--color-muted); font-size: var(--font-size-sm); margin-top: var(--space-1); }

/* ---------- Toasts ---------- */
#toast-container {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    max-width: 360px;
}
.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-pop);
    font-size: var(--font-size-base);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    opacity: 0;
    transform: translateX(16px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.toast-visible { opacity: 1; transform: translateX(0); }
.toast-hiding { opacity: 0; transform: translateX(16px); }
.toast span { flex: 1; }
.toast-close { background: none; border: none; color: inherit; opacity: 0.6; cursor: pointer; font-size: 16px; line-height: 1; padding: 0; }
.toast-close:hover { opacity: 1; }
.toast-success { border-left: 4px solid var(--color-success); }
.toast-error { border-left: 4px solid var(--color-danger); }
.toast-info { border-left: 4px solid var(--color-primary); }

/* ---------- Confirm-Dialog ---------- */
.confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 18, 32, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}
.confirm-overlay.confirm-visible { opacity: 1; pointer-events: auto; }
.confirm-box {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-pop);
    padding: var(--space-6);
    max-width: 380px;
    width: 90%;
}
.confirm-message { margin: 0 0 var(--space-5); font-size: var(--font-size-base); }
.confirm-actions { display: flex; justify-content: flex-end; gap: var(--space-2); }

/* ---------- Tabellen-Toolbar (Suche/Sortierung) ---------- */
.table-toolbar { margin-bottom: var(--space-3); display: flex; align-items: center; gap: var(--space-2); }
.table-toolbar .table-search { max-width: 280px; }
kbd.shortcut-hint {
    display: inline-block;
    min-width: 18px;
    text-align: center;
    padding: 1px 6px;
    border: 1px solid var(--color-border);
    border-bottom-width: 2px;
    border-radius: 4px;
    background: var(--color-bg);
    color: var(--color-muted);
    font-family: var(--font-family);
    font-size: 11px;
    font-weight: 600;
}
table.list th.sortable-col { cursor: pointer; user-select: none; }
table.list th.sortable-col:hover { color: var(--color-text); }
table.list th.sortable-col:after { content: "↕"; opacity: 0.35; margin-left: 4px; font-size: 10px; }
table.list th.sorted-asc:after { content: "↑"; opacity: 1; }
table.list th.sorted-desc:after { content: "↓"; opacity: 1; }

/* ---------- Leerzustände ---------- */
.empty-state {
    text-align: center;
    padding: var(--space-8) var(--space-4);
}
.empty-state .empty-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    color: var(--color-muted);
    opacity: 0.6;
}
.empty-state .empty-icon svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.3;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.empty-state h3 {
    margin: 0 0 var(--space-2);
    font-size: var(--font-size-lg);
    color: var(--color-text);
}
.empty-state p {
    margin: 0 0 var(--space-5);
    color: var(--color-muted);
    font-size: var(--font-size-base);
    max-width: 380px;
    margin-left: auto;
    margin-right: auto;
}
.empty-state .btn { display: inline-flex; }
table.list .empty-state-row td { border-bottom: none; padding: 0; }

/* ---------- Beleg-Editor mit Live-PDF-Vorschau ---------- */
.edit-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 420px;
    gap: var(--space-5);
    align-items: start;
}
.edit-form-col { min-width: 0; }
.preview-panel {
    position: sticky;
    top: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    padding: var(--space-3);
}
.preview-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-2);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.preview-status { font-weight: 500; text-transform: none; letter-spacing: normal; color: var(--color-primary); }
.pdf-preview-frame {
    width: 100%;
    height: 720px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
}
@media (max-width: 1100px) {
    .edit-layout { grid-template-columns: 1fr; }
    .preview-panel { position: static; }
    .pdf-preview-frame { height: 500px; }
}

/* ---------- Inline-Bearbeitung in Tabellen ---------- */
td.inline-editable {
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.1s ease;
}
td.inline-editable:hover { background: var(--color-primary-light); }
td.inline-editable.editing { cursor: default; background: transparent; }
td.inline-editable.saving { opacity: 0.55; }
.table-scroll { overflow-x: auto; }

.inline-edit-input {
    width: 100%;
    padding: 3px 5px;
    font-size: inherit;
    font-family: inherit;
    border: 1px solid var(--color-primary);
    border-radius: 4px;
    background: var(--color-surface);
    color: var(--color-text);
}