:root {
    /* Light Theme Variables */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f3f5;
    --text-primary: #343a40;
    --text-secondary: #6c757d;
    --text-tertiary: #adb5bd;
    --border-color: #dee2e6;
    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --positive-color: #10b981;
    --negative-color: #ef4444;
    --warning-color: #f59e0b;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
    --hover-color: #f8f9fa;
    --overlay-color: rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] {
    /* Dark Theme Variables */
    --bg-primary: #1e1e2e;
    --bg-secondary: #292a3e;
    --bg-tertiary: #242536;
    --text-primary: #f8f9fa;
    --text-secondary: #ccd6e0;
    --text-tertiary: #9ca3af;
    --border-color: #3f4354;
    --accent-primary: #60a5fa;
    --accent-secondary: #93c5fd;
    --shadow-color: rgba(0, 0, 0, 0.25);
    --positive-color: #34d399;
    --negative-color: #f87171;
    --warning-color: #fbbf24;
    --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.2), 0 1px 3px rgba(0, 0, 0, 0.3);
    --hover-color: #2f3044;
    --overlay-color: rgba(0, 0, 0, 0.7);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 16px;
    line-height: 1.5;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.dashboard {
    max-width: 1800px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

.period-selector {
    display: flex;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    overflow: hidden;
}

.period-btn {
    padding: 8px 16px;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border-right: 1px solid var(--border-color);
}

.period-btn:last-child {
    border-right: none;
}

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

.period-btn:hover:not(.active) {
    background-color: var(--hover-color);
}

.date-range {
    display: flex;
    align-items: center;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
}

.date-input input {
    border: none;
    background: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    outline: none;
    padding: 4px;
}

.date-separator {
    color: var(--text-tertiary);
    margin: 0 8px;
}

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    transition: all 0.2s ease;
    box-shadow: var(--card-shadow);
}

.theme-toggle:hover {
    background-color: var(--hover-color);
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px 24px;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 15px var(--shadow-color);
}

.card h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.card-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.card-trend {
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.card-trend.positive {
    color: var(--positive-color);
}

.card-trend.negative {
    color: var(--negative-color);
}

/* Chart Section */
.chart-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
    margin-bottom: 30px;
}

.chart-container {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--card-shadow);
    height: 400px;
    position: relative;
}

.chart-container h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.chart-container canvas {
    max-height: 320px;
}

/* App Selector */
.app-selector {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--card-shadow);
    margin-bottom: 30px;
}

.app-selector h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.app-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.app-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 14px;
    font-weight: 500;
}

.app-chip.active {
    border-color: var(--accent-primary);
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
}

.app-chip:hover {
    background-color: var(--hover-color);
}

.app-chip-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.app-chip-status.live {
    background-color: var(--positive-color);
}

.app-chip-status.dead {
    background-color: var(--negative-color);
}

/* Table Styles */
.table-container {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--card-shadow);
    overflow-x: auto;
    margin-bottom: 30px;
}

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

.table-header h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
}

.table-actions {
    display: flex;
    gap: 12px;
}

.add-expense-btn, .import-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.add-expense-btn:hover, .import-btn:hover {
    background-color: var(--accent-secondary);
}

.import-btn {
    background-color: var(--positive-color);
}

.category-filter select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
}

thead {
    border-bottom: 1px solid var(--border-color);
}

th {
    padding: 12px 16px;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr:hover {
    background-color: var(--hover-color);
}

/* ROI Styling */
.roi-positive {
    color: var(--positive-color);
    font-weight: 600;
}

.roi-negative {
    color: var(--negative-color);
    font-weight: 600;
}

.roi-warning {
    color: var(--warning-color);
    font-weight: 600;
}

/* Category Chips */
.category-chip {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-right: 4px;
}

.category-tw { background-color: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.category-microbilt { background-color: rgba(16, 185, 129, 0.1); color: #10b981; }
.category-other { background-color: rgba(156, 163, 175, 0.1); color: #6b7280; }
.category-pm { background-color: rgba(245, 158, 11, 0.1); color: #d97706; }
.category-tools { background-color: rgba(139, 92, 246, 0.1); color: #7c3aed; }
.category-ghost { background-color: rgba(239, 68, 68, 0.1); color: #dc2626; }
.category-shared { background-color: rgba(107, 114, 128, 0.1); color: #4b5563; }

/* Expense Type Badges */
.expense-type {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.expense-type.direct {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
}

.expense-type.shared {
    background-color: rgba(107, 114, 128, 0.1);
    color: var(--text-secondary);
}

/* Action Buttons */
.action-btn {
    padding: 6px 12px;
    border: none;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-right: 4px;
}

.edit-btn {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.edit-btn:hover {
    background-color: rgba(245, 158, 11, 0.2);
}

.delete-btn {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--negative-color);
}

.delete-btn:hover {
    background-color: rgba(239, 68, 68, 0.2);
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--overlay-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal.hidden {
    opacity: 0;
    visibility: hidden;
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transform: scale(1);
    transition: transform 0.3s ease;
    max-height: 90vh;
    overflow-y: auto;
}

.modal.hidden .modal-content {
    transform: scale(0.9);
}

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

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.close-modal {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    transition: color 0.2s ease;
}

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

.modal-body {
    padding: 24px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-actions {
    padding: 16px 24px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    border-top: 1px solid var(--border-color);
}

.cancel-btn {
    padding: 10px 16px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

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

.submit-btn {
    padding: 10px 16px;
    background-color: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

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

/* Categories Management */
.categories-list {
    margin-top: 20px;
}

.categories-list h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.category-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 8px;
}

.category-item:last-child {
    margin-bottom: 0;
}

.category-name {
    font-weight: 500;
}

.category-actions {
    display: flex;
    gap: 8px;
}

.category-delete {
    background: none;
    border: none;
    color: var(--negative-color);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
}

.category-delete:hover {
    color: var(--negative-color);
    opacity: 0.8;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--overlay-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3000;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: white;
}

.loading-spinner i {
    font-size: 32px;
}

.loading-spinner span {
    font-size: 16px;
    font-weight: 500;
}

/* Status Indicators */
.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
}

.status-live {
    background-color: var(--positive-color);
}

.status-dead {
    background-color: var(--negative-color);
}


.add-category-form {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    margin-bottom: 20px;
}

.add-category-form .form-group {
    flex: 1;
    margin-bottom: 0;
}

.add-category-form .submit-btn {
    padding: 10px 16px;
    white-space: nowrap;
}

.category-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 8px;
    border: 1px solid var(--border-color);
}

.category-item:last-child {
    margin-bottom: 0;
}

.category-item-info {
    flex: 1;
}

.category-item-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.category-item-description {
    font-size: 12px;
    color: var(--text-secondary);
}

.category-item-actions {
    display: flex;
    gap: 8px;
}

.category-edit-btn, .category-delete-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.category-edit-btn {
    color: var(--warning-color);
}

.category-edit-btn:hover {
    background-color: rgba(245, 158, 11, 0.1);
}

.category-delete-btn {
    color: var(--negative-color);
}

.category-delete-btn:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

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

.manage-categories-btn {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

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

/* Основна форма в модальному вікні */
.modal-content form {
    padding: 24px;
}

/* Виправлення відступів для form-group */
.form-group {
    margin-bottom: 20px;
}

.form-group:last-child {
    margin-bottom: 0;
}

/* Label стилі */
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

/* Input та select стилі */
.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Placeholder стилі */
.form-group input::placeholder {
    color: var(--text-tertiary);
    opacity: 1;
}

/* Form actions стилі */
.form-actions {
    padding: 20px 24px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    border-top: 1px solid var(--border-color);
    margin: 0 -24px -24px -24px;
    background-color: var(--bg-tertiary);
    border-radius: 0 0 12px 12px;
}

/* Button стилі */
.cancel-btn, .submit-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 100px;
}

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

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

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

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

/* Спеціальні стилі для різних типів інпутів */
.form-group input[type="number"] {
    text-align: right;
}

.form-group input[type="date"] {
    cursor: pointer;
}
.dashboard-nav {
    display: flex;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

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

.nav-item.active {
    background-color: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.nav-item i {
    font-size: 16px;
}

/* Responsive для мобільних */
@media (max-width: 480px) {
    .modal-content form {
        padding: 16px;
    }
    
    .form-actions {
        padding: 16px;
        margin: 0 -16px -16px -16px;
        flex-direction: column;
    }
    
    .cancel-btn, .submit-btn {
        width: 100%;
    }
}


/* Responsive Styles */
@media (max-width: 1200px) {
    .chart-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .header-controls {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .period-selector,
    .date-range {
        width: 100%;
    }
    
    .summary-cards {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .table-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .table-actions {
        width: 100%;
        justify-content: flex-start;
    }
    
    .app-chips {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .dashboard {
        padding: 10px;
    }
    
    .card {
        padding: 16px;
    }
    
    .card-value {
        font-size: 24px;
    }
    
    .chart-container {
        height: 300px;
        padding: 16px;
    }
    
    .table-container {
        padding: 12px;
    }
    
    th, td {
        padding: 8px 10px;
        font-size: 13px;
    }
    
    .modal-content {
        width: 95%;
        margin: 10px;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

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

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

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }