/* Modern Professional Dashboard - Easy on the Eyes */
:root {
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --dark: #1e293b;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-600: #475569;
    --gray-700: #334155;
    --white: #ffffff;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

* {
    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, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    min-height: 100vh;
}

.login-container {
    width: 100%;
    max-width: 440px;
}

.login-box {
    background: var(--white);
    border-radius: 16px;
    padding: 48px 40px;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.logo {
    margin-bottom: 20px;
    display: inline-block;
}

.login-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--gray-600);
    font-size: 15px;
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
    font-size: 14px;
}

.form-group input,
.form-group textarea,
select {
    width: 100%;
    padding: 12px 16px;
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--dark);
    transition: all 0.2s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    font-family: inherit;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

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

.btn-success:hover {
    background: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
}

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

.btn-info:hover {
    background: #2563eb;
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

/* Alerts */
.alert {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    border: 1px solid;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border-color: #bbf7d0;
}

.demo-info {
    text-align: center;
    margin-top: 20px;
    font-size: 13px;
    color: var(--gray-600);
}

.demo-info strong {
    color: var(--primary);
}

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-name {
    font-weight: 600;
    color: var(--dark);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 30px auto;
    padding: 0 30px 30px;
}

/* Statistics Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--gray-200);
}

.stat-icon {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.stat-icon-primary {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

.stat-icon-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.stat-icon-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.stat-details h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.stat-details p {
    color: var(--gray-600);
    font-size: 14px;
}

/* Section Card */
.section-card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.section-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-50);
}

.section-header h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

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

.data-table thead {
    background: var(--gray-50);
}

.data-table th {
    padding: 14px 20px;
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border);
}

.data-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    color: var(--dark);
}

.data-table tbody tr {
    transition: background 0.15s ease;
}

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

.file-name {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.file-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    font-size: 10px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.file-icon-image {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.file-icon-pdf {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

.file-icon-doc {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.file-icon-excel {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.file-icon-file {
    background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
}

.badge-primary {
    background: #dbeafe;
    color: #1e40af;
}

.badge-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 8px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px !important;
    color: var(--gray-600);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.4;
}

.empty-state p {
    font-size: 15px;
}

.amount {
    font-weight: 700;
    color: var(--success);
    font-size: 16px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--white);
    border-radius: 12px;
    width: 100%;
    max-width: 550px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gray-50);
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-600);
    padding: 4px;
    display: flex;
    transition: color 0.2s ease;
    border-radius: 4px;
}

.modal-close:hover {
    color: var(--dark);
    background: var(--gray-200);
}

.modal-content form {
    padding: 24px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 24px;
}

/* File Upload */
.file-upload {
    position: relative;
}

.file-upload input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.file-upload-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--gray-50);
    border: 2px dashed var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 600;
    color: var(--gray-700);
}

.file-upload-label:hover {
    border-color: var(--primary);
    background: #eef2ff;
    color: var(--primary);
}

/* Expense Details */
.expense-details {
    padding: 24px;
}

.detail-row {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.detail-row:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.detail-row label {
    display: block;
    font-weight: 600;
    color: var(--gray-600);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.detail-row span,
.detail-row p {
    color: var(--dark);
    font-size: 15px;
    font-weight: 500;
}

.detail-row p {
    margin: 0;
    line-height: 1.6;
}

/* Settings Page */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 24px;
}

.permissions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px;
    background: var(--gray-50);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.checkbox-label:hover {
    background: var(--gray-100);
    border-color: var(--primary);
}

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

.checkbox-label span {
    font-size: 14px;
    color: var(--dark);
    font-weight: 500;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-600);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 15px 15px;
    }

    .nav-container {
        padding: 12px 15px;
    }

    .nav-brand span {
        display: none;
    }

    .user-name {
        display: none;
    }

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

    .section-header {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }

    .section-header .btn {
        width: 100%;
    }

    .data-table {
        font-size: 13px;
    }

    .data-table th,
    .data-table td {
        padding: 12px 10px;
    }

    .action-buttons {
        flex-direction: column;
    }

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

@media (max-width: 480px) {
    .login-box {
        padding: 32px 24px;
    }

    .stat-card {
        padding: 20px;
    }

    .stat-icon {
        width: 56px;
        height: 56px;
    }

    .stat-details h3 {
        font-size: 28px;
    }
}