/* ══════════════════════════════════════════
   Posteingang Brand – Design System
   Apple-inspired, Clean, Professional
   ══════════════════════════════════════════ */

:root {
    --bg: #f5f5f7;
    --bg-card: #ffffff;
    --bg-sidebar: #1d1d1f;
    --text: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-on-dark: #f5f5f7;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --success: #34c759;
    --warning: #ff9f0a;
    --danger: #ff3b30;
    --border: #d2d2d7;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    --transition: 0.2s ease;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ── Layout ── */

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

.sidebar {
    width: 240px;
    background: var(--bg-sidebar);
    color: var(--text-on-dark);
    padding: 24px 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-brand {
    padding: 0 20px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 16px;
}

.sidebar-brand h1 {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

.sidebar-brand span {
    font-size: 11px;
    color: var(--text-secondary);
    display: block;
    margin-top: 2px;
}

.sidebar-nav {
    flex: 1;
    list-style: none;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    color: #fff;
    background: rgba(255,255,255,0.05);
}

.sidebar-nav a.active {
    color: #fff;
    background: rgba(255,255,255,0.08);
    border-left-color: var(--accent);
}

.sidebar-nav .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.sidebar-footer .user-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-footer .user-name {
    font-size: 13px;
    font-weight: 500;
}

.sidebar-footer .logout-btn {
    background: none;
    border: none;
    color: rgba(255,255,255,0.5);
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition);
}

.sidebar-footer .logout-btn:hover {
    color: var(--danger);
}

.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 32px;
    max-width: 1200px;
}

/* ── Cards ── */

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.card-header h2 {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

/* ── Stat Cards ── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    text-align: center;
}

.stat-card .stat-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -1px;
    line-height: 1.1;
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ── Buttons ── */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: #e8e8ed;
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-icon {
    padding: 4px 8px;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.btn-icon:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}
.btn-icon:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.btn-icon-success {
    color: var(--success);
    border-color: var(--success);
}
.btn-icon-success:hover {
    background: var(--success);
    color: #fff;
}
.btn-icon-danger {
    color: var(--danger);
    border-color: var(--danger);
}
.btn-icon-danger:hover {
    background: var(--danger);
    color: #fff;
}

/* ── Forms ── */

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: var(--font);
    transition: var(--transition);
    background: var(--bg-card);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,113,227,0.15);
}

/* ── Login ── */

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg);
}

.login-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 380px;
}

.login-card h1 {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 4px;
    letter-spacing: -0.5px;
}

.login-card .subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 28px;
}

.login-card .btn-primary {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    justify-content: center;
}

.login-error {
    background: #fff2f2;
    color: var(--danger);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
    text-align: center;
}

/* ── Tabelle ── */

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 10px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

td {
    padding: 12px;
    font-size: 14px;
    border-bottom: 1px solid #f0f0f5;
}

tr:hover td {
    background: #fafafa;
}

/* ── Badges ── */

.badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success { background: #e8f9ee; color: #1b7d3a; }
.badge-warning { background: #fff6e5; color: #9a6700; }
.badge-danger  { background: #ffe8e8; color: #c41e3a; }
.badge-info    { background: #e8f0fe; color: #1a56db; }
.badge-neutral { background: #f0f0f5; color: var(--text-secondary); }

/* ── Activity List ── */

.activity-list {
    list-style: none;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f5;
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.activity-text {
    font-size: 14px;
    line-height: 1.4;
}

.activity-time {
    font-size: 12px;
    color: var(--text-secondary);
}

/* ── Page Header ── */

.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 15px;
    margin-top: 4px;
}

/* ── Loading ── */

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--text-secondary);
}

/* ── Filter Bar ── */

.filter-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.filter-select {
    width: auto;
    min-width: 160px;
    padding: 8px 12px;
    font-size: 13px;
}

.filter-search {
    flex: 1;
    min-width: 180px;
    padding: 8px 12px;
    font-size: 13px;
}

/* ── Document Table ── */

.doc-row {
    cursor: pointer;
}

.doc-row:hover td {
    background: #f0f4ff;
}

.td-date {
    white-space: nowrap;
    color: var(--text-secondary);
    font-size: 13px;
}

.td-filename {
    max-width: 240px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.doc-icon {
    margin-right: 6px;
}

.td-mandant {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 13px;
}

.td-details {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.detail-chip {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    background: #f0f0f5;
    color: var(--text-secondary);
    white-space: nowrap;
}

.chip-datev {
    background: #e8f0fe;
    color: #1a56db;
}

/* ── Pagination ── */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 0 0;
    border-top: 1px solid #f0f0f5;
    margin-top: 8px;
}

.pagination-info {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ── Modal ── */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 640px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 16px;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    margin-right: 12px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

/* ── Detail Grid ── */

.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.detail-item label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-secondary);
}

.detail-item span {
    font-size: 14px;
}

.konfidenz-small {
    font-size: 11px;
    color: var(--text-secondary);
}

.divider {
    border: none;
    border-top: 1px solid #f0f0f5;
    margin: 16px 0;
}

.section-title {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.summary-text {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text);
}

.archiv-path {
    font-size: 12px !important;
    color: var(--text-secondary) !important;
    word-break: break-all;
}

.edit-form {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ── Upload Zone ── */

.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 60px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.upload-zone:hover,
.upload-zone-active {
    border-color: var(--accent);
    background: #f0f4ff;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.upload-text {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 4px;
}

.upload-hint {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ── Upload Results ── */

.upload-results {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.upload-result {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-sm);
}

.upload-result-success {
    background: #f0faf3;
}

.upload-result-error {
    background: #fff5f5;
}

.upload-result-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.upload-result-body {
    flex: 1;
    min-width: 0;
}

.upload-result-filename {
    font-weight: 500;
    font-size: 14px;
    margin-bottom: 4px;
}

.upload-result-details {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    font-size: 13px;
    color: var(--text-secondary);
}

.upload-result-error-msg {
    font-size: 13px;
    color: var(--danger);
}

/* ── Chips ── */

.chip-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    background: #f0f0f5;
    color: var(--text);
}

.chip strong {
    color: var(--accent);
}

/* ── Empty State ── */

.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--text-secondary);
    font-size: 14px;
}

/* ── Page Header Row ── */

.page-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

/* ── Clickable Stat Card ── */

.stat-clickable {
    cursor: pointer;
    transition: var(--transition);
}

.stat-clickable:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

/* ── Fristen List ── */

.frist-list {
    display: flex;
    flex-direction: column;
}

.frist-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid #f0f0f5;
}

.frist-item:last-child {
    border-bottom: none;
}

.frist-ueberfaellig {
    background: #fff8f8;
    margin: 0 -24px;
    padding: 14px 24px;
}

.frist-dringend {
    background: #fffcf5;
    margin: 0 -24px;
    padding: 14px 24px;
}

.frist-erledigt {
    opacity: 0.6;
}

.frist-check {
    padding-top: 2px;
    flex-shrink: 0;
}

.frist-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent);
}

.frist-body {
    flex: 1;
    min-width: 0;
}

.frist-title {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
}

.frist-done {
    text-decoration: line-through;
    color: var(--text-secondary);
}

.frist-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-secondary);
}

.frist-countdown {
    font-weight: 500;
}

.frist-mandant {
    color: var(--accent);
}

.frist-absender,
.frist-dok {
    color: var(--text-secondary);
}

.frist-erledigt-info {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 4px;
    font-style: italic;
}

.frist-actions {
    flex-shrink: 0;
}

/* ── Tab Bar ── */

.tab-bar {
    display: flex;
    gap: 0;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--border);
}

.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover {
    color: var(--text);
}

.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* ── Kunden / Mahnwesen Extras ── */

.td-mono {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 13px;
}

.td-small {
    font-size: 12px;
    color: var(--text-secondary);
}

.btn-small {
    padding: 4px 8px;
    font-size: 12px;
    min-width: unset;
}

/* ── Responsive ── */

@media (max-width: 768px) {
    .sidebar {
        width: 60px;
        padding: 16px 0;
    }

    .sidebar-brand h1,
    .sidebar-brand span,
    .sidebar-nav .nav-label,
    .sidebar-footer .user-name {
        display: none;
    }

    .sidebar-nav a {
        justify-content: center;
        padding: 12px;
    }

    .main-content {
        margin-left: 60px;
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ── Kontoabgleich ── */

.row-selected {
    background: #e8f0fe !important;
}

.row-highlight {
    background: #e8f9ee;
}

.row-highlight.row-selected {
    background: #d0f0db !important;
}

:root {
    --bg-secondary: #f5f5f7;
}