/* Portfolio Tracker - Modern Glassmorphism Design */

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

:root {
    /* Colors */
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    
    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
    
    /* Text colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.6);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    color: var(--text-primary);
    overflow-x: hidden;
}

/* Glass effect utility */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-lg);
}

/* App Container */
.app-container {
    min-height: 100vh;
    padding: var(--spacing-lg);
}

/* Header */
.header {
    position: sticky;
    top: var(--spacing-lg);
    z-index: 100;
    margin-bottom: var(--spacing-xl);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
}

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

.logo i {
    font-size: var(--font-size-2xl);
    color: var(--accent-color);
}

.logo h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--error-color), #dc2626);
    color: var(--text-primary);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(239, 68, 68, 0.3);
}

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Portfolio Overview */
.overview-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.card {
    padding: var(--spacing-xl);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.card-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--text-secondary);
}

.card-header i {
    font-size: var(--font-size-xl);
    color: var(--accent-color);
}

.card-value {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.amount {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
}

.percentage {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.percentage.positive {
    color: var(--success-color);
}

.percentage.negative {
    color: var(--error-color);
}

/* Charts Section */
.charts-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
}

.chart-container {
    padding: var(--spacing-xl);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.chart-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.chart-controls select {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
}

.chart-body {
    height: 300px;
    position: relative;
}

/* Holdings Section */
.holdings-container {
    padding: var(--spacing-xl);
}

.holdings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.holdings-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.holdings-controls {
    display: flex;
    gap: var(--spacing-md);
}

.search-input {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    width: 200px;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.holdings-table {
    overflow-x: auto;
}

#holdingsTable {
    width: 100%;
    border-collapse: collapse;
}

#holdingsTable th,
#holdingsTable td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

#holdingsTable th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#holdingsTable td {
    font-size: var(--font-size-sm);
}

.stock-symbol {
    font-weight: 600;
    color: var(--text-primary);
}

.stock-company {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
}

.gain-positive {
    color: var(--success-color);
}

.gain-negative {
    color: var(--error-color);
}

.actions {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-icon {
    padding: var(--spacing-xs);
    min-width: auto;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.empty-state h4 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

/* Analytics Section */
.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

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

.analytics-content {
    margin-top: var(--spacing-lg);
}

.risk-meter {
    height: 150px;
    margin-bottom: var(--spacing-lg);
}

.risk-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.risk-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--glass-border);
}

.performers-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.performer-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
}

.performer-info {
    display: flex;
    flex-direction: column;
}

.performer-symbol {
    font-weight: 600;
    color: var(--text-primary);
}

.performer-company {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.performer-change {
    font-weight: 600;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-lg);
}

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

.modal-content {
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
    border-bottom: 1px solid var(--glass-border);
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

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

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

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
}

/* Stock Suggestions */
.stock-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    max-height: 200px;
    overflow-y: auto;
    z-index: 10;
    display: none;
}

.suggestion-item {
    padding: var(--spacing-md);
    cursor: pointer;
    border-bottom: 1px solid var(--glass-border);
    transition: background-color 0.2s ease;
}

.suggestion-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

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

.suggestion-symbol {
    font-weight: 600;
    color: var(--text-primary);
}

.suggestion-company {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    z-index: 2000;
}

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

.loading-spinner {
    text-align: center;
    color: var(--text-primary);
}

.loading-spinner i {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    color: var(--accent-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-container {
        padding: var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .overview-cards {
        grid-template-columns: 1fr;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .holdings-controls {
        flex-direction: column;
    }
    
    .search-input {
        width: 100%;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .logo h1 {
        font-size: var(--font-size-xl);
    }
}

@media (max-width: 480px) {
    .modal {
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        margin: 0;
    }
    
    .holdings-table {
        font-size: var(--font-size-xs);
    }
    
    #holdingsTable th,
    #holdingsTable td {
        padding: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-lg);
    }
    
    .chart-container,
    .holdings-container,
    .analytics-card {
        padding: var(--spacing-lg);
    }
}

/* Animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.animate-slide-up {
    animation: slideInUp 0.5s ease-out;
}

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

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}