/* CSS Variables */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --danger-color: #ef4444;
    --danger-dark: #dc2626;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --warning-light: #fef3c7;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.2s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* Status Bar */
.status-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 32px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    font-size: 12px;
    z-index: 100;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.status-dot.online {
    background-color: var(--success-color);
    box-shadow: 0 0 6px var(--success-color);
}

.status-dot.offline {
    background-color: var(--danger-color);
    box-shadow: 0 0 6px var(--danger-color);
}

.pending-sync {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--warning-color);
    font-weight: 500;
}

.pending-sync .sync-icon {
    animation: spin 2s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Header */
.header {
    position: fixed;
    top: 32px;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 99;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

.header h1 {
    color: white;
    font-size: 18px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid white;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

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

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

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

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

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

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

.btn-sync {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px;
    border-radius: 50%;
    width: 36px;
    height: 36px;
}

.btn-sync:hover {
    background: rgba(255, 255, 255, 0.3);
}

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

.btn-logout {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 6px 12px;
    font-size: 12px;
}

/* Main Content */
.main-content {
    padding: 108px 16px 24px;
    max-width: 600px;
    margin: 0 auto;
}

/* Search & Filter */
.search-filter-bar {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
}

.search-box {
    position: relative;
    margin-bottom: 12px;
}

.search-box input {
    width: 100%;
    padding: 10px 12px 10px 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

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

.search-box .search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
}

.filter-sort-row {
    display: flex;
    gap: 8px;
}

.filter-select, .sort-select {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: var(--card-bg);
    cursor: pointer;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 8px;
}

.btn-add {
    flex: 1;
    min-width: 160px;
}

.import-export-btns {
    display: flex;
    gap: 8px;
}

.import-export-btns .btn {
    padding: 8px 12px;
    font-size: 12px;
}

/* Subscription List */
.subscription-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Subscription Card */
.sub-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
    position: relative;
}

.sub-card:hover {
    box-shadow: var(--shadow-md);
}

.sub-card.expired {
    border-left-color: var(--danger-color);
    opacity: 0.8;
}

.sub-card.expiring-soon {
    border-left-color: var(--warning-color);
}

.sub-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.sub-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
}

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

.badge-danger {
    background-color: #fee2e2;
    color: var(--danger-color);
}

.badge-pending {
    background-color: #e0e7ff;
    color: var(--primary-color);
}

.sub-card-actions {
    display: flex;
    gap: 4px;
}

.sub-card-actions button {
    background: none;
    border: none;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 16px;
    opacity: 0.6;
    transition: var(--transition);
}

.sub-card-actions button:hover {
    opacity: 1;
}

.sub-details {
    display: grid;
    gap: 4px;
    font-size: 13px;
    color: var(--text-secondary);
}

.sub-detail-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sub-detail-row .icon {
    width: 16px;
    text-align: center;
}

.sub-expired-date {
    font-weight: 500;
}

.sub-expired-date.text-danger {
    color: var(--danger-color);
}

.sub-expired-date.text-warning {
    color: var(--warning-color);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: 48px 24px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 440px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-small {
    max-width: 360px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    line-height: 1;
}

.modal-body {
    padding: 20px;
}

.modal-body p {
    margin-bottom: 8px;
}

/* Form */
form {
    padding: 20px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

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

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding-top: 8px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    z-index: 300;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

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

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

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

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

.text-muted {
    color: var(--text-muted);
    font-size: 12px;
}

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

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

/* Responsive */
@media (max-width: 480px) {
    .header h1 {
        font-size: 16px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .btn-add {
        width: 100%;
    }
    
    .import-export-btns {
        width: 100%;
        justify-content: stretch;
    }
    
    .import-export-btns .btn {
        flex: 1;
    }
}

/* PWA Install Banner */
.install-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--primary-color);
    color: white;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 150;
    box-shadow: var(--shadow-lg);
}

.install-banner button {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
}

.install-banner .dismiss {
    background: transparent;
    color: white;
    padding: 8px;
}