/* Modern CSS for Crypto Analysis Monitor */

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --bg-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --border-radius: 0.5rem;
    --transition: all 0.2s ease-in-out;
}

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

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

.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-indicator {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
    background-color: var(--danger-color);
    transition: var(--transition);
}

.status-indicator.connected {
    background-color: var(--success-color);
}

.status-indicator.connecting {
    background-color: var(--warning-color);
    animation: pulse 1.5s infinite;
}

.status-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    position: relative;
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 50;
    transition: var(--transition);
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Tabs */
.tabs-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1rem;
}

.tabs-nav {
    display: flex;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.tab-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border-right: 1px solid var(--border-color);
}

.tab-button:last-child {
    border-right: none;
}

.tab-button:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

.tab-button.active {
    background: var(--primary-color);
    color: white;
}

.crypto-icon {
    width: 1.25rem;
    height: 1.25rem;
}

.tab-icon {
    font-size: 1rem;
}

.refresh-button-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Second Filter Row */
.second-filter-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 0;
    margin-bottom: 2rem;
}

.opportunity-filter, .symbol-filter {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.opportunity-filter label, .symbol-filter label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.filter-select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--surface-color);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    min-width: 140px;
}

.filter-input {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--surface-color);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    min-width: 160px;
}

.filter-select:hover, .filter-input:hover {
    border-color: var(--primary-color);
}

.filter-select:focus, .filter-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Filter Status */
.filter-status {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.filter-status span {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.refresh-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.refresh-button:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.refresh-button:active .refresh-icon {
    animation: spin 0.5s linear;
}

/* Analysis Container */
.analysis-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

/* Analysis Card */
.analysis-card {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
}

.analysis-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-color);
}

.symbol-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.symbol-icon {
    width: 2rem;
    height: 2rem;
}

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

.action-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.action-badge.long {
    background: rgba(5, 150, 105, 0.1);
    color: var(--success-color);
}

.action-badge.short {
    background: rgba(220, 38, 38, 0.1);
    color: var(--danger-color);
}

.card-content {
    padding: 1rem;
}

.timestamp {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.quick-reason {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.5;
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: pre-wrap;
    max-width: 100%;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.metric {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
}

.metric-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

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

.metric-value.negative {
    color: var(--danger-color);
}

.opportunity-type {
    text-transform: capitalize;
}

/* Empty State */
.empty-state, .error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    text-align: center;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.empty-icon, .error-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.empty-state h3, .error-state h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state p, .error-state p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.retry-button {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.retry-button:hover {
    background: var(--secondary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
    }

    .header-content {
        padding: 1rem;
    }

    .tabs-container {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .refresh-button-container {
        flex-direction: column;
        gap: 1rem;
    }

    .second-filter-row {
        padding: 0.5rem 0;
        justify-content: center;
        margin-bottom: 1.5rem;
    }

    .opportunity-filter, .symbol-filter {
        justify-content: space-between;
    }

    .filter-select {
        min-width: auto;
        flex: 1;
    }

    .tabs-nav {
        flex-wrap: wrap;
    }

    .tab-button {
        flex: 1;
        justify-content: center;
        min-width: 0;
        padding: 0.5rem;
    }

    .analysis-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

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

@media (max-width: 480px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .title {
        font-size: 1.25rem;
    }

    .tab-button {
        padding: 0.5rem 0.75rem;
    }

    .card-header {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }
}

/* Animation for cards entering */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.analysis-card {
    animation: fadeInUp 0.3s ease-out;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}