:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --accent: #007bff;
    --accent-hover: #0056b3;
    --danger: #dc3545;
    --success: #28a745;
    --warning: #ffc107;
    --border: #e9ecef;
    --shadow: rgba(0, 0, 0, 0.1);
    --modal-backdrop: rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --bg-card: #2d2d2d;
        --text-primary: #ffffff;
        --text-secondary: #a8a8a8;
        --border: #404040;
        --shadow: rgba(0, 0, 0, 0.3);
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    margin-bottom: 40px;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--accent), #6610f2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
}

.overdue-badge {
    position: absolute;
    top: -10px;
    right: -30px;
    background-color: var(--danger);
    color: white;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 12px;
    min-width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s ease-in-out infinite;
}

.summary {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 20px;
}

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

.label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.amount {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.add-subscription {
    text-align: center;
    margin-bottom: 30px;
}

.btn-primary, .btn-secondary {
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

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

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

.filters {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    align-items: center;
}

/* View Toggle */
.view-toggle {
    display: flex;
    gap: 4px;
    background-color: var(--bg-secondary);
    padding: 4px;
    border-radius: 8px;
    margin-left: auto;
}

.view-btn {
    background: none;
    border: none;
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.view-btn:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.1);
}

.view-btn.active {
    background-color: var(--bg-primary);
    color: var(--accent);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.filter-select {
    padding: 10px 15px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: border-color 0.3s ease;
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent);
}

.subscriptions {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.subscription-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.subscription-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow);
}

.subscription-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--accent), #6610f2);
}

.subscription-card.overdue {
    border-color: var(--danger);
    background-color: rgba(220, 53, 69, 0.05);
}

.subscription-card.overdue::before {
    background: var(--danger);
}

.subscription-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.subscription-name {
    font-size: 1.25rem;
    font-weight: 600;
}

.subscription-category {
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 4px;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    text-transform: uppercase;
}

.subscription-price {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.subscription-billing {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.subscription-renewal {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 15px;
}

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

.subscription-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.btn-edit, .btn-delete, .btn-renew {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-renew:hover {
    background-color: #218838;
    transform: translateY(-1px);
}

.btn-edit {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

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

.btn-delete {
    background-color: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
}

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

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-backdrop);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 30px;
    width: 90%;
    max-width: 500px;
    animation: slideIn 0.3s ease;
}

.modal-content h2 {
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 30px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

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

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

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

.sync-status {
    display: flex;
    align-items: center;
}

.sync-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
}

.sync-btn:hover {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}

.sync-btn.syncing svg {
    animation: spin 1s linear infinite;
}

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

.sync-info {
    margin-top: 20px;
    padding: 15px;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    font-size: 0.875rem;
}

.sync-warning {
    margin-top: 20px;
    padding: 15px;
    background-color: rgba(255, 193, 7, 0.1);
    border: 1px solid var(--warning);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--warning);
}

.sync-info-item {
    margin-bottom: 10px;
}

.sync-frequency-select {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    background-color: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

.btn-sync-now {
    width: 100%;
    padding: 10px 20px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-sync-now:hover {
    background-color: #0056b3;
}

.btn-sync-now:disabled {
    background-color: var(--muted);
    cursor: not-allowed;
}

/* Toast Notifications */
.toast-notification {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--card-bg);
    color: var(--text);
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: transform 0.3s ease-out, opacity 0.3s ease-out;
    opacity: 0;
    font-size: 14px;
    max-width: 90vw;
    text-align: center;
}

.toast-notification.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

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

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

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

/* Sync button states with icons */
.sync-btn[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    pointer-events: none;
}

.sync-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    text-align: center;
}

.sync-message.success {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.sync-message.error {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger);
    border: 1px solid var(--danger);
}

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

.btn-danger:hover {
    background-color: #c82333;
}

small {
    display: block;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.checkbox-group {
    margin: 20px 0;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .summary {
        gap: 30px;
    }
    
    .amount {
        font-size: 1.5rem;
    }
    
    .subscriptions {
        grid-template-columns: 1fr;
    }
    
    .filters {
        flex-direction: column;
    }
    
    .filter-select {
        width: 100%;
    }
}

/* Sync Styles */
.sync-status {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sync-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

.sync-btn.sync-active:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.sync-btn.sync-locked {
    background-color: var(--warning);
    color: white;
    border-color: var(--warning);
}

.sync-btn.sync-locked:hover {
    background-color: #e0a800;
    border-color: #e0a800;
}

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

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

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

.sync-btn svg.spin {
    animation: spin 1s linear infinite;
}

.sync-btn svg {
    width: 16px;
    height: 16px;
}

.sync-info {
    margin-top: 20px;
    padding: 15px;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.sync-warning {
    margin-top: 20px;
    padding: 15px;
    background-color: rgba(231, 76, 60, 0.1);
    border: 1px solid var(--danger);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--danger);
}

.sync-info-item {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

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

.sync-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    font-size: 0.9rem;
    text-align: center;
}

.sync-message.info {
    background-color: rgba(52, 152, 219, 0.1);
    color: #3498db;
    border: 1px solid #3498db;
}

.sync-message.success {
    background-color: rgba(46, 204, 113, 0.1);
    color: #2ecc71;
    border: 1px solid #2ecc71;
}

.sync-message.error {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--danger);
    border: 1px solid var(--danger);
}

.btn-danger {
    background-color: var(--danger);
    color: white;
    border: none;
}

.btn-danger:hover {
    background-color: #c0392b;
    transform: translateY(-1px);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 20px;
}

/* List View Styles */
.subscriptions.list-view {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.subscription-item {
    display: grid;
    grid-template-columns: 2fr 1fr 100px 120px 140px 120px;
    align-items: center;
    padding: 16px 20px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    transition: all 0.2s ease;
    gap: 15px;
}

.subscription-item:first-child {
    border-radius: 12px 12px 0 0;
}

.subscription-item:last-child {
    border-radius: 0 0 12px 12px;
    border-bottom: none;
}

.subscription-item:hover {
    background-color: rgba(99, 102, 241, 0.05);
    transform: translateX(4px);
}

.subscription-item.overdue {
    background-color: rgba(220, 53, 69, 0.1);
}

.subscription-item.overdue:hover {
    background-color: rgba(220, 53, 69, 0.15);
}

.list-name {
    font-weight: 600;
    color: var(--text-primary);
}

.list-category {
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 4px;
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    text-transform: uppercase;
    justify-self: start;
}

.list-price {
    font-weight: 700;
    color: var(--text-primary);
}

.list-billing {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.list-renewal {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.list-renewal.renewal-soon {
    color: var(--warning);
}

.subscription-item.overdue .list-renewal {
    color: var(--danger);
    font-weight: 600;
}

.list-actions {
    display: flex;
    gap: 8px;
    justify-self: end;
}

.list-actions button {
    padding: 6px 12px;
    font-size: 0.875rem;
}

/* Responsive list view */
@media (max-width: 900px) {
    .subscription-item {
        grid-template-columns: 1fr auto;
        gap: 10px;
        padding: 15px;
    }
    
    .list-name {
        grid-column: 1;
    }
    
    .list-category {
        grid-column: 2;
        grid-row: 1;
    }
    
    .list-price,
    .list-billing,
    .list-renewal {
        grid-column: 1;
        font-size: 0.813rem;
    }
    
    .list-actions {
        grid-column: 1 / -1;
        justify-self: stretch;
        margin-top: 10px;
    }
    
    .list-actions button {
        flex: 1;
    }
}

/* Responsive sync button */
@media (max-width: 600px) {
    .sync-btn span {
        display: none;
    }
    
    .sync-btn {
        padding: 8px 12px;
    }
    
    .header-top {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .view-toggle {
        margin-left: 0;
        order: -1;
        width: 100%;
        justify-content: center;
    }
}