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

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-secondary: #64748b;
    --color-success: #16a34a;
    --color-warning: #f59e0b;
    --color-danger: #dc2626;
    --color-critical: #991b1b;
    --color-info: #0891b2;
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
}

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

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

/* Navigation */
.navbar {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--color-primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-primary);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

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

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

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

.btn-secondary:hover {
    background-color: #475569;
}

/* Filters */
.filters {
    background-color: var(--color-surface);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin: 2rem 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.filters form {
    display: flex;
    gap: 1rem;
    align-items: flex-end;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

.filter-group select {
    padding: 0.5rem;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    font-size: 1rem;
    min-width: 200px;
}

/* Results Info */
.results-info {
    margin: 1rem 0;
    color: var(--color-text-secondary);
}

/* Signals List */
.signals-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 2rem 0;
}

.signal-card {
    background-color: var(--color-surface);
    border-radius: 0.5rem;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border-left: 4px solid var(--color-info);
    transition: transform 0.2s, box-shadow 0.2s;
}

.signal-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.signal-card.severity-CRITICAL {
    border-left-color: var(--color-critical);
}

.signal-card.severity-HIGH {
    border-left-color: var(--color-danger);
}

.signal-card.severity-MEDIUM {
    border-left-color: var(--color-warning);
}

.signal-card.severity-LOW {
    border-left-color: var(--color-success);
}

.signal-card.severity-INFO {
    border-left-color: var(--color-info);
}

.signal-header {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.signal-type,
.signal-severity {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

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

.signal-severity {
    background-color: var(--color-secondary);
    color: white;
}

.signal-card h3 {
    margin-bottom: 0.75rem;
}

.signal-card h3 a {
    color: var(--color-text);
    text-decoration: none;
}

.signal-card h3 a:hover {
    color: var(--color-primary);
}

.signal-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.signal-summary {
    margin-bottom: 1rem;
    color: var(--color-text-secondary);
}

.signal-footer {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    font-size: 0.875rem;
}

.action-badge {
    padding: 0.25rem 0.75rem;
    background-color: var(--color-danger);
    color: white;
    border-radius: 0.25rem;
    font-weight: 600;
}

.version,
.confidence {
    color: var(--color-text-secondary);
}

/* Signal Detail */
.back-link {
    display: inline-block;
    margin: 2rem 0 1rem;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    text-decoration: underline;
}

.signal-detail {
    background-color: var(--color-surface);
    border-radius: 0.5rem;
    padding: 2rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.signal-detail-header {
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 1.5rem;
    margin-bottom: 2rem;
}

.badges {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.signal-type-badge,
.severity-badge,
.action-badge-large {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
}

.signal-type-badge {
    background-color: var(--color-primary);
    color: white;
}

.severity-badge {
    background-color: var(--color-secondary);
    color: white;
}

.action-badge-large {
    background-color: var(--color-danger);
    color: white;
}

.signal-meta-detail {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    color: var(--color-text-secondary);
}

.signal-content section {
    margin-bottom: 2rem;
}

.signal-content h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.key-points {
    list-style: none;
    padding-left: 0;
}

.key-points li {
    padding: 0.75rem;
    background-color: var(--color-bg);
    margin-bottom: 0.5rem;
    border-radius: 0.375rem;
    border-left: 3px solid var(--color-primary);
}

.metadata-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.metadata-item {
    padding: 1rem;
    background-color: var(--color-bg);
    border-radius: 0.375rem;
}

.metadata-item .label {
    display: block;
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.metadata-item .value {
    display: block;
    color: var(--color-text);
    font-size: 1rem;
}

.links-list {
    list-style: none;
}

.links-list li {
    margin-bottom: 0.5rem;
}

.links-list a {
    color: var(--color-primary);
    text-decoration: none;
    word-break: break-all;
}

.links-list a:hover {
    text-decoration: underline;
}

/* Error Messages */
.error-message {
    background-color: #fee2e2;
    color: var(--color-danger);
    padding: 1rem;
    border-radius: 0.5rem;
    margin: 2rem 0;
    border-left: 4px solid var(--color-danger);
}

.no-signals {
    text-align: center;
    color: var(--color-text-secondary);
    padding: 2rem;
    font-size: 1.125rem;
}

/* JIRA Integration */
.jira-integration-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 1px solid var(--color-border);
    border-radius: 0.75rem;
    padding: 2rem;
    margin-bottom: 2rem;
}

.jira-integration-section h2 {
    color: #0052cc;
    margin-bottom: 0.5rem;
}

.jira-description {
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.jira-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-jira {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.25rem;
    border-radius: 0.5rem;
    border: 2px solid transparent;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-jira::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-jira:hover::before {
    left: 100%;
}

.jira-icon {
    font-size: 1.1rem;
}

.btn-story {
    background-color: #0052cc;
    color: white;
    border-color: #0052cc;
}

.btn-story:hover {
    background-color: #0747a6;
    border-color: #0747a6;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 82, 204, 0.3);
}

.btn-task {
    background-color: #36b37e;
    color: white;
    border-color: #36b37e;
}

.btn-task:hover {
    background-color: #2684ff;
    border-color: #2684ff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(54, 179, 126, 0.3);
}

.btn-bug {
    background-color: #ff5630;
    color: white;
    border-color: #ff5630;
}

.btn-bug:hover {
    background-color: #de350b;
    border-color: #de350b;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(255, 86, 48, 0.3);
}

.btn-incident {
    background-color: #ff8b00;
    color: white;
    border-color: #ff8b00;
    animation: pulse-incident 2s infinite;
}

.btn-incident:hover {
    background-color: #ff991f;
    border-color: #ff991f;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(255, 139, 0, 0.4);
    animation: none;
}

@keyframes pulse-incident {
    0% { box-shadow: 0 0 0 0 rgba(255, 139, 0, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(255, 139, 0, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 139, 0, 0); }
}

/* Footer */
footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--color-text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .filters form {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group select {
        min-width: 100%;
    }

    .signal-meta,
    .signal-footer {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero h1 {
        font-size: 2rem;
    }
    
    .jira-actions {
        flex-direction: column;
    }
    
    .btn-jira {
        justify-content: center;
        width: 100%;
    }
    
    .jira-integration-section {
        padding: 1.5rem;
    }
}