:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #f1f5f9;
    --secondary-hover: #e2e8f0;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --surface: var(--card-bg);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --danger: #ef4444;
    --success: #10b981;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
}

.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}

.login-card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: var(--radius);
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 1.75rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-main);
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-block {
    width: 100%;
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--text-main);
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-main);
}

.btn-outline:hover {
    background-color: var(--secondary);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-sm {
    padding: 0.25rem 0.6rem;
    font-size: 0.75rem;
    border-radius: 4px;
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}
.btn-danger:hover {
    background-color: #dc2626;
}

.btn-success {
    background-color: var(--success);
    color: white;
}
.btn-success:hover {
    background-color: #059669;
}

.error-msg {
    color: var(--danger);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    text-align: center;
}

/* Dashboard Styles */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--primary);
}

.badge {
    background: #dbeafe;
    color: var(--primary-hover);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge.status-active { background: #d1fae5; color: #059669; }
.badge.status-inactive { background: #fee2e2; color: #dc2626; }

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.muted {
    color: var(--text-muted);
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.glass {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    align-items: flex-end;
}

.toolbar-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group {
    display: flex;
    gap: 0.5rem;
}

.input {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
}

.error-box {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
}

/* Table styles */
.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th, .data-table td {
    padding: 0.3rem 0.5rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    font-size: 0.8rem;
}

.data-table td small {
    white-space: normal;
    word-break: break-all;
    display: block;
    max-width: 200px;
}

.cell-wrap {
    white-space: normal !important;
    min-width: 120px;
    max-width: 220px;
    word-break: break-word;
}

.cell-narrow {
    max-width: 100px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cell-name {
    max-width: 160px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.data-table th {
    background: #f1f5f9;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.03em;
    text-align: left;
    padding: 0.4rem 0.5rem;
}

.data-table tbody tr:hover {
    background-color: var(--secondary);
}

.text-center {
    text-align: center;
}

.success-text {
    color: var(--success);
    font-weight: 600;
}

.danger-text {
    color: var(--danger);
    font-weight: 600;
}

.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    margin-top: 1rem;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .navbar {
        padding: 1rem;
    }
    
    .toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .input-group {
        flex-direction: column;
    }
    
    .data-table th, .data-table td {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }

    /* Pionowy widok kart dla telefonów */
    @media (max-width: 600px) {
        .data-table, 
        .data-table tbody, 
        .data-table tr, 
        .data-table td {
            display: block;
            width: 100%;
        }
        .data-table thead {
            display: none;
        }
        .data-table tbody tr {
            margin-bottom: 1rem;
            border: 1px solid var(--border);
            border-radius: 8px;
            background: var(--surface);
            padding: 0;
            overflow: hidden;
        }
        .data-table tbody td {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--secondary);
            text-align: right;
            padding: 0.75rem 1rem;
        }
        .data-table tbody td::before {
            content: attr(data-label);
            font-weight: 600;
            color: var(--text-muted);
            text-align: left;
            margin-right: 1rem;
        }
        .data-table tbody td:last-child {
            border-bottom: none;
        }
    }
}

.loading-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.7);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

.loader {
    border: 5px solid #f3f3f3;
    border-top: 5px solid var(--primary);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* --- SHARED MODAL SYSTEM --- */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
    padding: 1rem;
}

.modal-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 16px;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

/* Wide Modal (History, Reports etc.) */
.modal-lg {
    max-width: 1200px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 1.25rem;
    color: var(--text-main);
}

.close-modal {
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: color 0.2s;
    line-height: 1;
}

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

/* History Specifics in Modals */
.history-ref-box {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    background: var(--bg-color);
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.history-ref-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.history-ref-item label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.history-ref-item span {
    font-weight: 700;
    font-size: 1.1rem;
}

.history-ref-item.ref-item-baseline {
    border-left: 3px solid #f59e0b;
    background: #fffbeb;
    padding-left: 15px;
    border-radius: 4px;
}

.history-ref-item.ref-item-baseline label {
    color: #92400e;
}

.history-ref-item.ref-item-baseline span {
    color: #92400e;
    font-weight: 700;
    font-size: 1.1rem;
}

/* Print Styles */
@media print {
    body * { visibility: hidden; }
    #printArea, #printArea * { visibility: visible; }
    #printArea {
        position: absolute;
        left: 0; top: 0; width: 100%;
        display: block !important;
    }
}