/* styles.css */
:root {
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;

    --font-xs: 12px;
    --font-sm: 14px;
    --font-md: 16px;
    --font-lg: 18px;
    --font-xl: 20px;
    --font-xxl: 24px;
    --font-xxxl: 32px;
    --font-header: 36px;

    --color-bg: #F8FAFC;
    --color-surface: #FFFFFF;
    --color-surface-alt: #F1F5F9;
    --color-text: #1E293B;
    --color-text-muted: #64748B;
    --color-border: #E2E8F0;
    --color-shadow: rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    padding: var(--spacing-xl);
    max-width: 1800px;
    margin: 0 auto;
}

/* Typography */
.header {
    text-align: center;
    font-size: var(--font-header);
    font-weight: 700;
    margin-bottom: var(--spacing-xxl);
    color: #2563EB;
    letter-spacing: -0.5px;
}

.section-title {
    font-size: var(--font-xxl);
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text);
    text-align: center;
}

/* Control Panel */
.control-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 20px var(--color-shadow);
    border: 1px solid var(--color-border);
}

.status-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.status-label {
    color: var(--color-text-muted);
    font-size: var(--font-md);
}

.status-connected {
    color: #059669 !important;
    font-weight: 600;
}

.status-disconnected {
    color: #DC2626 !important;
    font-weight: 600;
}

/* Service Grid */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.service-card {
    padding: var(--spacing-lg);
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 20px var(--color-shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--color-border);
}

.service-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px var(--color-shadow);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.service-title {
    font-size: var(--font-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.topic-list {
    text-align: left;
    font-size: var(--font-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.topic-messages-header {
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.view-all-btn {
    background: none;
    border: none;
    color: #2563EB;
    cursor: pointer;
    font-size: var(--font-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.view-all-btn:hover {
    background-color: var(--color-surface-alt);
}

.topic-messages {
    background: var(--color-surface-alt);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    max-height: 300px;
    overflow-y: auto;
    font-size: var(--font-xs);
    border: 1px solid var(--color-border);
}

.topic-message-item {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
    font-family: 'JetBrains Mono', monospace;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.topic-message-item:hover {
    background-color: var(--color-surface);
}

.topic-message-timestamp {
    font-weight: 600;
    color: var(--color-text);
}

.topic-message-step {
    color: var(--color-text-muted);
}

.topic-message-content {
    color: var(--color-text);
    word-break: break-all;
}

/* Message Detail Modal */
.message-detail-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.message-detail-content {
    background: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

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

.message-detail-title {
    font-size: var(--font-xl);
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    font-size: var(--font-xl);
    cursor: pointer;
    color: var(--color-text-muted);
}

.message-detail-body {
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--font-sm);
    background: var(--color-surface-alt);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
}

/* Pipeline Visualization */
.pipeline-section {
    margin: var(--spacing-xl) 0;
}

.pipeline-visualization {
    padding: var(--spacing-xl);
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 20px var(--color-shadow);
    position: relative;
    height: 180px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.pipeline-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
}

.service-node {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    font-weight: 600;
    min-width: 120px;
    z-index: 20;
    transition: all 0.3s ease;
    border: 2px solid;
    font-size: var(--font-md);
    position: relative;
}

.service-node-active {
    box-shadow: 0 0 20px currentColor;
    transform: scale(1.05);
    animation: pulse 2s ease-in-out;
}

.connection-line {
    height: 2px;
    background: var(--color-border);
    flex: 1;
    max-width: 80px;
    position: relative;
}

.connection-line-active {
    background: currentColor;
    box-shadow: 0 0 10px currentColor;
}

/* Log Section */
.log-section {
    margin: var(--spacing-xl) 0;
}

.log-container {
    background: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    max-height: 400px;
    overflow-y: auto;
    font-size: var(--font-sm);
    box-shadow: 0 4px 20px var(--color-shadow);
    border: 1px solid var(--color-border);
}

.log-message {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    border-left: 4px solid;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(90deg, color-mix(in srgb, currentColor 5%, transparent), transparent);
    font-family: 'JetBrains Mono', monospace;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.log-message:hover {
    background: linear-gradient(90deg, color-mix(in srgb, currentColor 10%, transparent), transparent);
}

.log-message-content {
    color: var(--color-text-muted);
    font-size: var(--font-xs);
}

.log-message-text {
    font-weight: 500;
    color: var(--color-text);
}

/* Current Step */
.current-step {
    margin-top: var(--spacing-lg);
    font-size: var(--font-lg);
    color: #2563EB;
    text-align: center;
    font-weight: 600;
}

/* Animations */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* Utility Classes */
.no-messages {
    color: var(--color-text-muted);
    font-style: italic;
    text-align: center;
    padding: var(--spacing-lg);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .header {
        font-size: var(--font-xxl);
    }

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

    .control-panel {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .pipeline-container {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .connection-line {
        width: 2px;
        height: 40px;
        max-width: none;
    }
}

#submit-button, #download-button {
    transition: all 100ms ease;
}

#submit-button:hover, #download-button:hover {
    background-color: aliceblue !important;
}

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

::-webkit-scrollbar-track {
    background: var(--color-surface-alt);
    border-radius: var(--radius-sm);
}

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

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