/* ============================================
   M.A.S. Controlling Center — Styles
   ============================================ */

/* --- Login Page --- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f0f4f8 0%, #dce6ef 50%, #e8edf2 100%);
    padding: 24px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}

.login-header {
    text-align: center;
    margin-bottom: 36px;
}

.login-logo {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-800);
    margin-bottom: 8px;
}

.login-logo-img {
    height: 80px;
    width: auto;
    margin-bottom: 12px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.login-header h1 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gray-800);
    letter-spacing: -0.3px;
}

.login-subtitle {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    margin-top: 4px;
    letter-spacing: 0.5px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--gray-400);
    pointer-events: none;
}

.login-form input {
    width: 100%;
    padding: 12px 14px 12px 44px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    background: var(--white);
    transition: all var(--transition-fast);
    outline: none;
}

.login-form input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(74, 124, 155, 0.12);
}

.login-form input::placeholder {
    color: var(--gray-400);
}

.login-error {
    background: #FEF2F2;
    border: 1px solid #FECACA;
    color: #DC2626;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.login-btn {
    width: 100%;
    justify-content: center;
    padding: 14px;
    font-size: 1rem;
    margin-top: 8px;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
}

.login-footer a {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

.login-footer a:hover {
    color: var(--accent);
}

/* --- Controlling Layout --- */
.ctrl-layout {
    display: flex;
    min-height: 100vh;
    background: var(--bg-secondary);
}

/* Sidebar */
.ctrl-sidebar {
    width: 260px;
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition-base);
}

.ctrl-sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--gray-100);
}

.ctrl-sidebar-header .brand {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--gray-800);
}

.ctrl-sidebar-logo {
    height: 56px;
    width: auto;
    display: block;
    margin-bottom: 4px;
}

.ctrl-sidebar-header .brand-sub {
    font-size: 0.7rem;
    color: var(--accent);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-top: 2px;
}

.ctrl-sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.ctrl-nav-label {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 12px 12px 8px;
}

.ctrl-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    margin-bottom: 2px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.ctrl-nav-item:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

.ctrl-nav-item.active {
    background: var(--blue-50);
    color: var(--accent-dark);
    font-weight: 600;
}

.ctrl-nav-item .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

.ctrl-nav-item .nav-badge {
    margin-left: auto;
    background: var(--blue-100);
    color: var(--blue-700);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 50px;
}

.ctrl-nav-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.ctrl-nav-item.disabled:hover {
    background: none;
    color: var(--text-secondary);
}

.ctrl-sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--gray-100);
    display: flex;
    flex-direction: column;
    gap: 0;
}

.ctrl-sidebar-footer .user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--blue-100);
    color: var(--blue-700);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
}

.ctrl-sidebar-footer .user-info {
    flex: 1;
}

.ctrl-sidebar-footer .user-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-800);
}

.ctrl-sidebar-footer .user-role {
    font-size: 0.7rem;
    color: var(--text-tertiary);
}

.ctrl-sidebar-footer .logout-btn {
    background: #FEF2F2;
    border: 1px solid #FECACA;
    color: #DC2626;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.ctrl-sidebar-footer .logout-btn:hover {
    background: #DC2626;
    color: white;
    border-color: #DC2626;
}

/* Main content */
.ctrl-main {
    flex: 1;
    margin-left: 260px;
    padding: 24px 32px;
    min-height: 100vh;
}

.ctrl-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}

.ctrl-topbar h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--gray-900);
}

.ctrl-topbar-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* KPI Cards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 28px;
}

.kpi-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
}

.kpi-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

a.kpi-card.kpi-clickable {
    cursor: pointer;
    display: block;
    text-decoration: none;
    color: inherit;
}

a.kpi-card.kpi-clickable:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-md), 0 0 0 2px rgba(74, 124, 155, 0.1);
}

.kpi-card .kpi-label {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.kpi-card .kpi-value {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--gray-900);
}

.kpi-card .kpi-change {
    font-size: 0.78rem;
    font-weight: 600;
    margin-top: 4px;
}

.kpi-card .kpi-change.positive {
    color: #16A34A;
}

.kpi-card .kpi-change.negative {
    color: #DC2626;
}

/* Data Table */
.data-panel {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.data-panel-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.data-panel-header h2 {
    font-size: 1.1rem;
    font-weight: 700;
}

.data-panel-filters {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1.5px solid var(--gray-300);
    background: var(--white);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--accent);
    background: var(--blue-50);
    color: var(--accent-dark);
}

.filter-input {
    padding: 6px 12px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-family: var(--font-body);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast);
    min-width: 180px;
}

.filter-input:focus {
    border-color: var(--accent);
}

/* Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead th {
    padding: 12px 16px;
    text-align: left;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--gray-200);
    cursor: pointer;
    white-space: nowrap;
    user-select: none;
    transition: color var(--transition-fast);
}

.data-table thead th:hover {
    color: var(--accent);
}

.data-table thead th .sort-icon {
    display: inline-block;
    margin-left: 4px;
    font-size: 0.7rem;
    opacity: 0.4;
}

.data-table thead th.sorted .sort-icon {
    opacity: 1;
    color: var(--accent);
}

.data-table tbody tr {
    border-bottom: 1px solid var(--gray-100);
    transition: background var(--transition-fast);
    cursor: pointer;
}

.data-table tbody tr:hover {
    background: var(--gray-50);
}

.data-table tbody tr:last-child {
    border-bottom: none;
}

.data-table tbody td {
    padding: 14px 16px;
    font-size: 0.88rem;
    color: var(--text-primary);
    white-space: nowrap;
}

.data-table .td-checkbox {
    width: 40px;
}

.data-table .td-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--accent);
}

/* Row status colors */
.data-table tbody tr.status-ok {
    border-left: 3px solid #16A34A;
}

.data-table tbody tr.status-ok td:first-child {
    padding-left: 13px;
}

.data-table tbody tr.status-error {
    border-left: 3px solid #DC2626;
}

.data-table tbody tr.status-error td:first-child {
    padding-left: 13px;
}

.data-table tbody tr.status-pending {
    border-left: 3px solid #F59E0B;
}

.data-table tbody tr.status-pending td:first-child {
    padding-left: 13px;
}

/* Status badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.status-badge.ok {
    background: #DCFCE7;
    color: #16A34A;
}

.status-badge.error {
    background: #FEF2F2;
    color: #DC2626;
}

.status-badge.pending {
    background: #FEF3C7;
    color: #D97706;
}

.status-badge.exported {
    background: var(--blue-50);
    color: var(--blue-700);
}

.status-badge.credit {
    background: #F3E8FF;
    color: #7C3AED;
}

.status-badge.manual {
    background: var(--gray-100);
    color: var(--gray-600);
}

/* Amount formatting */
.amount {
    font-family: 'Inter', monospace;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.amount.positive {
    color: #16A34A;
}

.amount.negative {
    color: #DC2626;
}

/* Pagination */
.data-panel-footer {
    padding: 14px 24px;
    border-top: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.pagination {
    display: flex;
    gap: 4px;
}

.pagination button {
    padding: 6px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    background: var(--white);
    font-size: 0.82rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

.pagination button:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.pagination button.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--white);
}

/* --- Invoice Detail View --- */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.pdf-viewer {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    height: 700px;
}

.pdf-viewer iframe,
.pdf-viewer embed,
.pdf-viewer object {
    width: 100%;
    height: 100%;
    border: none;
}

.detail-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.detail-card {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    padding: 20px 24px;
}

.detail-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--gray-800);
}

/* Item comparison rows */
.item-row {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr 1fr;
    gap: 8px;
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 0.85rem;
    align-items: center;
}

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

.item-row.header {
    font-weight: 600;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.item-row.error {
    background: #FEF2F2;
    margin: 0 -24px;
    padding: 10px 24px;
}

/* Gutschrift section */
.gutschrift-section {
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-top: 12px;
}

.gutschrift-section h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.switch-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.switch-row label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Toggle switch */
.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch .slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gray-300);
    border-radius: 50px;
    transition: all var(--transition-fast);
}

.toggle-switch .slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: var(--white);
    border-radius: 50%;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.toggle-switch input:checked+.slider {
    background: var(--accent);
}

.toggle-switch input:checked+.slider::before {
    transform: translateX(20px);
}

/* --- Export View --- */
.export-summary {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    padding: 24px;
    margin-bottom: 24px;
}

.export-summary h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.export-group {
    margin-bottom: 24px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.export-group-header {
    background: var(--gray-50);
    padding: 12px 16px;
    font-weight: 600;
    font-size: 0.92rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
}

.export-group-body {
    padding: 12px 16px;
}

.export-group-footer {
    background: var(--gray-50);
    padding: 12px 16px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    font-weight: 700;
    font-size: 0.95rem;
}

/* Copy-paste block for invoice numbers */
.invoice-numbers-block {
    background: var(--gray-900);
    color: #A5F3FC;
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.88rem;
    line-height: 1.6;
    position: relative;
    margin-top: 16px;
    user-select: all;
}

.invoice-numbers-block .copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--white);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.invoice-numbers-block .copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* --- Offers Upload Page --- */
.upload-zone {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-md);
    padding: 48px;
    text-align: center;
    background: var(--gray-50);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: 24px;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent);
    background: var(--blue-50);
}

.upload-zone .upload-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.upload-zone p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.upload-zone .browse-link {
    color: var(--accent);
    font-weight: 600;
    cursor: pointer;
}

/* --- Future Module Placeholder --- */
.future-module {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    text-align: center;
    padding: 48px;
}

.future-module .future-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    opacity: 0.6;
}

.future-module h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--gray-700);
    margin-bottom: 12px;
}

.future-module p {
    color: var(--text-secondary);
    max-width: 480px;
    font-size: 0.95rem;
    line-height: 1.7;
}

.future-module .coming-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    padding: 8px 20px;
    background: var(--blue-50);
    color: var(--accent-dark);
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
}

/* --- Responsive (Controlling) --- */
@media (max-width: 1024px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .detail-layout {
        grid-template-columns: 1fr;
    }

    .pdf-viewer {
        height: 400px;
    }
}

@media (max-width: 768px) {
    .ctrl-sidebar {
        transform: translateX(-100%);
    }

    .ctrl-sidebar.open {
        transform: translateX(0);
    }

    .ctrl-main {
        margin-left: 0;
        padding: 16px;
    }

    .kpi-grid {
        grid-template-columns: 1fr;
    }

    .data-table {
        font-size: 0.82rem;
    }

    .login-card {
        padding: 32px 24px;
    }
}

/* --- Modals --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 24px;
}

.modal-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    overflow: hidden;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-100);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-body .form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}