/* Modern Design System for Client Portal */

:root {
    /* Modern Dark Green Color Palette - #00552E */
    --primary-50: #e6f2ed;
    --primary-100: #c0dfd1;
    --primary-200: #96cab3;
    --primary-300: #6cb594;
    --primary-400: #4da57d;
    --primary-500: #2d9566;
    --primary-600: #00552E;
    --primary-700: #004a27;
    --primary-800: #003f20;
    --primary-900: #002e16;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--primary-50) 100%);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Modern Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--gray-200);
}

.navbar-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    transition: transform 0.2s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-username {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
}

.navbar-logout {
    color: var(--primary-600);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.navbar-logout:hover {
    background: var(--primary-50);
    color: var(--primary-700);
}

/* Main Content */
main {
    flex: 1;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

/* Modern Card */
.card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.card-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
    background: linear-gradient(135deg, var(--primary-50), white);
}

.card-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.card-body {
    padding: var(--spacing-xl);
}

/* Filter Section */
.filter-section {
    background: var(--gray-50);
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    align-items: end;
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
}

.form-input,
.form-select {
    padding: 0.625rem var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background: white;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

/* Buttons */
.btn {
    padding: 0.625rem var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-600));
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #059669);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669, #047857);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.btn-success:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Table */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
}

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

.table thead {
    background: linear-gradient(135deg, var(--gray-50), var(--primary-50));
}

.table th {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-600);
}

.table tbody tr {
    border-bottom: 1px solid var(--gray-200);
    transition: background 0.2s ease;
}

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

.table td {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--gray-700);
}

.table td.font-medium {
    font-weight: 600;
    color: var(--gray-900);
}

/* Checkbox */
.checkbox {
    width: 1.125rem;
    height: 1.125rem;
    border-radius: var(--radius-sm);
    border: 2px solid var(--gray-300);
    cursor: pointer;
    transition: all 0.2s ease;
}

.checkbox:checked {
    background: var(--primary-600);
    border-color: var(--primary-600);
}

.checkbox:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-100);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xl);
    background: white;
    border-top: 1px solid var(--gray-200);
}

.pagination-link {
    padding: var(--spacing-xs) var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    color: var(--gray-700);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.pagination-link:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
    color: var(--primary-700);
}

.pagination-link.active {
    background: var(--primary-600);
    border-color: var(--primary-600);
    color: white;
}

.pagination-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Stats Bar */
.stats-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: white;
    border-bottom: 1px solid var(--gray-200);
}

.stats-text {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
}

/* Footer */
footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--gray-200);
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* Login Page */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 8rem);
    padding: var(--spacing-xl);
}

.login-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 28rem;
}

.login-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.login-input {
    padding: var(--spacing-md);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.login-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.login-button {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-500));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-md);
}

.login-button:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-600));
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

/* Alert Messages */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
}

.alert-info {
    background: var(--primary-50);
    border-color: var(--primary-500);
    color: var(--primary-800);
}

.alert-error {
    background: #fef2f2;
    border-color: var(--error);
    color: #991b1b;
}

/* Responsive Design */
@media (max-width: 768px) {
    .filter-grid {
        grid-template-columns: 1fr;
    }

    .table-container {
        border-radius: 0;
    }

    .card {
        border-radius: var(--radius-lg);
    }

    .navbar-container {
        padding: 0 var(--spacing-md);
    }

    main {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* Utility Classes */
.text-right {
    text-align: right;
}

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

.font-medium {
    font-weight: 600;
}

.w-full {
    width: 100%;
}

.flex {
    display: flex;
}

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

.gap-2 {
    flex-direction: column;
    gap: var(--spacing-md);
}


/* Responsive Utilities */
.desktop-only {
    display: table !important;
}

.mobile-only {
    display: none !important;
}

/* Mobile Card View */
.invoice-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.invoice-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.2s ease;
    border: 1px solid var(--gray-200);
}

.invoice-card:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-md);
}

.invoice-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.invoice-card-header .checkbox {
    flex-shrink: 0;
}

.invoice-card-title {
    flex: 1;
    min-width: 0;
}

.invoice-number {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-900);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.invoice-date {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.125rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.badge-success {
    background: var(--success);
    color: white;
}

.badge-warning {
    background: var(--warning);
    color: white;
}

.invoice-card-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.invoice-contractor {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-700);
    font-weight: 500;
}

.invoice-amounts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

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

.amount-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.amount-value {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-900);
}

.invoice-card-footer {
    padding: var(--spacing-md);
    padding-top: 0;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .desktop-only {
        display: none !important;
    }

    .mobile-only {
        display: flex !important;
    }

    .container {
        padding: 0 !important;
        margin: 0 !important;
        max-width: 100% !important;
    }

    main {
        padding: 0 !important;
    }

    .table-container {
        padding: 0 !important;
        margin: 0 !important;
    }

    .invoice-cards {
        gap: 0;
    }

    .invoice-card {
        border-radius: 0;
        border-left: none;
        border-right: none;
        border-top: none;
    }

    .navbar-container {
        padding: 0 var(--spacing-md);
    }

    .navbar-brand {
        font-size: 1.25rem;
    }

    .navbar-brand img {
        height: 2rem !important;
    }

    .filter-form {
        grid-template-columns: 1fr;
        margin: var(--spacing-md);
    }

    .info-box {
        font-size: 0.875rem;
        padding: var(--spacing-sm);
        margin: var(--spacing-md);
    }

    .pagination {
        flex-wrap: wrap;
        gap: 0.5rem;
        margin: var(--spacing-md);
    }

    .pagination-link,
    .pagination-current {
        min-width: 2.5rem;
        height: 2.5rem;
        font-size: 0.875rem;
    }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: var(--spacing-lg);
    }
}