/* ============================================================
   Warenwirtschaft — Design System
   ============================================================ */
:root {
    --primary:    #2563eb;
    --primary-d:  #1d4ed8;
    --primary-l:  #eff6ff;
    --success:    #16a34a;
    --success-l:  #dcfce7;
    --warning:    #d97706;
    --warning-l:  #fef3c7;
    --danger:     #dc2626;
    --danger-l:   #fee2e2;
    --info:       #0284c7;
    --info-l:     #e0f2fe;

    --bg:         #f1f5f9;
    --sidebar-bg: #0f172a;
    --sidebar-w:  240px;
    --card:       #ffffff;
    --border:     #e2e8f0;
    --border-d:   #cbd5e1;
    --text:       #0f172a;
    --muted:      #64748b;
    --light:      #f8fafc;

    --radius-sm:  6px;
    --radius:     10px;
    --radius-lg:  14px;
    --shadow:     0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md:  0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body { font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
       background: var(--bg); color: var(--text); line-height: 1.5; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Layout ---- */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-w);
    background: var(--sidebar-bg);
    position: fixed; top: 0; left: 0; height: 100vh;
    display: flex; flex-direction: column; z-index: 200;
    overflow-y: auto;
}
.sidebar-logo {
    padding: 20px 18px 16px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-logo .app-name {
    font-size: 1rem; font-weight: 700; color: #fff; line-height: 1.2;
}
.sidebar-logo .app-ver {
    font-size: .72rem; color: #94a3b8; margin-top: 2px;
}
.sidebar-user {
    padding: 12px 18px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    font-size: .78rem; color: #94a3b8;
}
.sidebar-user strong { display: block; color: #e2e8f0; font-size: .82rem; }

.sidebar-nav { flex: 1; padding: 10px 0; }
.nav-section-label {
    padding: 12px 18px 4px;
    font-size: .68rem; font-weight: 700; letter-spacing: .08em;
    text-transform: uppercase; color: #475569;
}
.nav-item {
    display: flex; align-items: center; gap: 10px;
    padding: 9px 18px; color: #94a3b8;
    font-size: .85rem; transition: all .15s; cursor: pointer;
    border-left: 3px solid transparent;
}
.nav-item:hover { background: rgba(255,255,255,.05); color: #e2e8f0; text-decoration: none; }
.nav-item.active { background: rgba(37,99,235,.2); color: #fff; border-left-color: var(--primary); }
.nav-item .nav-icon { font-size: 1rem; width: 20px; text-align: center; }
.nav-badge {
    margin-left: auto; background: var(--danger);
    color: #fff; font-size: .68rem; font-weight: 700;
    padding: 1px 6px; border-radius: 10px;
}

.sidebar-footer {
    padding: 12px 18px; border-top: 1px solid rgba(255,255,255,.08);
}
.sidebar-footer a { color: #94a3b8; font-size: .8rem; }
.sidebar-footer a:hover { color: #e2e8f0; }

.main-wrap { margin-left: var(--sidebar-w); flex: 1; display: flex; flex-direction: column; }

.topbar {
    background: var(--card); border-bottom: 1px solid var(--border);
    padding: 0 28px; height: 56px;
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 100;
    box-shadow: var(--shadow);
}
.topbar-title { font-size: 1.05rem; font-weight: 600; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }

.page-content { padding: 24px 28px; flex: 1; }

/* ---- Karten ---- */
.card {
    background: var(--card); border-radius: var(--radius);
    border: 1px solid var(--border); box-shadow: var(--shadow);
}
.card-header {
    padding: 16px 20px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.card-title { font-size: .95rem; font-weight: 600; }
.card-body { padding: 20px; }

/* ---- KPI-Kacheln ---- */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.kpi {
    background: var(--card); border-radius: var(--radius);
    border: 1px solid var(--border); padding: 18px 20px;
    box-shadow: var(--shadow);
}
.kpi-val { font-size: 1.75rem; font-weight: 700; line-height: 1; }
.kpi-lbl { font-size: .75rem; color: var(--muted); margin-top: 5px; }
.kpi-sub { font-size: .78rem; margin-top: 6px; }
.kpi.primary .kpi-val { color: var(--primary); }
.kpi.success .kpi-val { color: var(--success); }
.kpi.warning .kpi-val { color: var(--warning); }
.kpi.danger  .kpi-val { color: var(--danger); }
.kpi.info    .kpi-val { color: var(--info); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; border-radius: var(--radius-sm);
    border: 1px solid transparent; cursor: pointer;
    font-size: .85rem; font-weight: 600; font-family: inherit;
    transition: all .15s; text-decoration: none; white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-sm   { padding: 5px 11px; font-size: .78rem; }
.btn-lg   { padding: 11px 22px; font-size: .95rem; }
.btn-icon { padding: 7px; }

.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-d); border-color: var(--primary-d); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #15803d; color: #fff; }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover  { background: #b91c1c; color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-outline { background: transparent; border-color: var(--border-d); color: var(--text); }
.btn-outline:hover { background: var(--light); color: var(--text); }
.btn-ghost   { background: var(--light); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--border); color: var(--text); }

/* ---- Tabellen ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .855rem; }
thead th {
    background: var(--light); padding: 10px 14px;
    font-weight: 600; color: var(--muted); font-size: .78rem;
    text-transform: uppercase; letter-spacing: .04em;
    border-bottom: 2px solid var(--border); white-space: nowrap; text-align: left;
}
tbody td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: #fafbff; }
.table-actions { display: flex; gap: 4px; }

/* ---- Formulare ---- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.form-row  { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 0; }
.col-full  { grid-column: 1 / -1; }
.col-2     { grid-column: span 2; }

.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-label {
    font-size: .8rem; font-weight: 600; color: var(--muted);
    display: flex; align-items: center; gap: 4px;
}
.form-label .req { color: var(--danger); }
.form-control {
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: 8px 11px; font-size: .88rem; font-family: inherit;
    color: var(--text); background: #fff; outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
.form-control:read-only { background: var(--light); color: var(--muted); }
textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { cursor: pointer; }

.form-check { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.form-check input[type=checkbox] { width: 16px; height: 16px; cursor: pointer; accent-color: var(--primary); }

.input-group { display: flex; }
.input-group .form-control { border-radius: var(--radius-sm) 0 0 var(--radius-sm); flex: 1; }
.input-group .input-addon {
    padding: 8px 12px; background: var(--light); border: 1px solid var(--border);
    border-left: none; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: .85rem; color: var(--muted); white-space: nowrap;
    display: flex; align-items: center;
}

.form-divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.form-section-title { font-size: .88rem; font-weight: 700; color: var(--muted); margin-bottom: 14px; }

/* ---- Badges & Status ---- */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 9px; border-radius: 20px;
    font-size: .72rem; font-weight: 700; white-space: nowrap;
}
.badge-success { background: var(--success-l); color: #15803d; }
.badge-warning { background: var(--warning-l); color: #92400e; }
.badge-danger  { background: var(--danger-l);  color: #b91c1c; }
.badge-info    { background: var(--info-l);    color: #0369a1; }
.badge-neutral { background: #f1f5f9;          color: var(--muted); }
.badge-primary { background: var(--primary-l); color: var(--primary-d); }

/* ---- Filter-/Suchleiste ---- */
.toolbar {
    display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
    margin-bottom: 16px;
}
.toolbar-right { margin-left: auto; display: flex; gap: 8px; }
.filter-tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.filter-tab {
    padding: 5px 13px; border-radius: 20px; font-size: .8rem; font-weight: 600;
    background: var(--light); color: var(--muted); border: 1px solid var(--border);
    cursor: pointer; transition: all .15s; text-decoration: none;
}
.filter-tab:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.filter-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.search-input {
    border: 1px solid var(--border); border-radius: 20px;
    padding: 6px 14px 6px 34px; font-size: .85rem;
    background: var(--card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E") no-repeat 11px center;
    outline: none; width: 220px; transition: border .15s;
}
.search-input:focus { border-color: var(--primary); }

/* ---- Alerts/Flash ---- */
.alert {
    padding: 12px 16px; border-radius: var(--radius-sm);
    font-size: .88rem; font-weight: 600; margin-bottom: 16px;
    display: flex; align-items: center; gap: 8px;
}
.alert-success { background: var(--success-l); color: #15803d; border: 1px solid #bbf7d0; }
.alert-danger  { background: var(--danger-l);  color: #b91c1c; border: 1px solid #fecaca; }
.alert-warning { background: var(--warning-l); color: #92400e; border: 1px solid #fde68a; }
.alert-info    { background: var(--info-l);    color: #0369a1; border: 1px solid #bae6fd; }

/* ---- Dropzone ---- */
.dropzone {
    border: 2px dashed var(--border-d); border-radius: var(--radius);
    padding: 32px 20px; text-align: center; cursor: pointer;
    transition: all .2s; position: relative; background: var(--light);
}
.dropzone input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.dropzone:hover, .dropzone.over { border-color: var(--primary); background: var(--primary-l); }
.dropzone .dz-icon { font-size: 2rem; margin-bottom: 8px; }
.dropzone p { font-size: .85rem; color: var(--muted); }
.dropzone strong { color: var(--primary); }

/* ---- Modal ---- */
.modal-backdrop {
    display: none; position: fixed; inset: 0;
    background: rgba(15,23,42,.5); z-index: 500;
    align-items: center; justify-content: center;
}
.modal-backdrop.show { display: flex; }
.modal {
    background: var(--card); border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0,0,0,.2);
    max-width: 700px; width: 95%; max-height: 90vh;
    display: flex; flex-direction: column; overflow: hidden;
}
.modal-header {
    padding: 18px 22px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 1rem; font-weight: 600; }
.modal-close { background: none; border: none; cursor: pointer; font-size: 1.3rem; color: var(--muted); padding: 2px; }
.modal-body   { padding: 22px; overflow-y: auto; flex: 1; }
.modal-footer { padding: 14px 22px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* ---- Pagination ---- */
.pagination { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.page-link {
    padding: 6px 11px; border-radius: var(--radius-sm);
    border: 1px solid var(--border); font-size: .82rem; font-weight: 600;
    color: var(--muted); background: var(--card); cursor: pointer;
    transition: all .15s; text-decoration: none;
}
.page-link:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.page-link.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-link.disabled { opacity: .4; pointer-events: none; }

/* ---- Hilfliches ---- */
.text-muted   { color: var(--muted); }
.text-small   { font-size: .8rem; }
.text-right   { text-align: right; }
.text-center  { text-align: center; }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-primary { color: var(--primary); }
.fw-bold      { font-weight: 700; }
.mt-0  { margin-top: 0; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.flex  { display: flex; }
.flex-col  { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.empty-state {
    padding: 60px 20px; text-align: center; color: var(--muted);
}
.empty-state .icon { font-size: 2.5rem; margin-bottom: 12px; }
.empty-state p { font-size: .9rem; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-d); border-radius: 3px; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
    :root { --sidebar-w: 0px; }
    .sidebar { transform: translateX(-240px); transition: transform .25s; }
    .sidebar.open { transform: translateX(0); width: 240px; }
    .main-wrap { margin-left: 0; }
    .page-content { padding: 16px; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}