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

:root {
    --brand-red: #dc2626;
    --brand-dark: #1a1a2e;
    --sidebar-width: 240px;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--gray-900);
    background: var(--gray-50);
}

.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-width);
    background: var(--brand-dark);
    color: #fff;
    padding: 1.5rem 0;
    position: fixed;
    top: 0; left: 0; bottom: 0;
}

.sidebar-brand { padding: 0 1.5rem 1.5rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-brand h2 { font-size: 1.25rem; font-weight: 700; }

.nav-links { list-style: none; padding: 1rem 0; }
.nav-links li a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.2s;
}
.nav-links li a:hover { color: #fff; background: rgba(255,255,255,0.1); }

.main-content {
    margin-left: var(--sidebar-width);
    padding: 2rem;
    flex: 1;
    max-width: 1200px;
}

/* Cards */
.card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.card-header h3 { font-size: 1rem; font-weight: 600; }

/* Stats row */
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: #fff; border: 1px solid var(--gray-200); border-radius: 8px; padding: 1.25rem; }
.stat-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--gray-500); margin-bottom: 0.25rem; }
.stat-value { font-size: 1.5rem; font-weight: 700; }

/* Scan list */
.scan-list { display: flex; flex-direction: column; gap: 0.75rem; }
.scan-item {
    display: grid;
    grid-template-columns: 1fr auto auto auto;
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.25rem;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.2s;
}
.scan-item:hover { border-color: var(--brand-red); }
.scan-url { font-weight: 500; word-break: break-all; }
.scan-date { font-size: 0.875rem; color: var(--gray-500); }

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-critical { background: #fef2f2; color: #dc2626; }
.badge-serious { background: #fff7ed; color: #ea580c; }
.badge-moderate { background: #fffbeb; color: #ca8a04; }
.badge-minor { background: #f0fdf4; color: #16a34a; }
.badge-completed { background: #f0fdf4; color: #16a34a; }
.badge-queued { background: #eff6ff; color: #2563eb; }
.badge-running { background: #fffbeb; color: #ca8a04; }
.badge-failed { background: #fef2f2; color: #dc2626; }
.badge-applied { background: #f0fdf4; color: #16a34a; }
.badge-dismissed { background: var(--gray-100); color: var(--gray-500); }
.badge-pending { background: #eff6ff; color: #2563eb; }

/* Violations */
.violation-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}
.violation-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 0.75rem; }
.violation-title { font-weight: 600; }
.violation-help { font-size: 0.875rem; color: var(--gray-500); margin-bottom: 0.5rem; }
.violation-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.5rem; }
.tag { font-size: 0.6875rem; padding: 0.125rem 0.5rem; background: var(--gray-100); border-radius: 4px; color: var(--gray-700); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}
.btn:hover { opacity: 0.85; }
.btn-primary { background: var(--brand-red); color: #fff; }
.btn-secondary { background: var(--gray-200); color: var(--gray-700); }
.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.8125rem; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray-500);
}
.empty-state h3 { font-size: 1.125rem; color: var(--gray-700); margin-bottom: 0.5rem; }

/* Page header */
.page-header { margin-bottom: 1.5rem; }
.page-header h1 { font-size: 1.5rem; font-weight: 700; }
.page-header p { color: var(--gray-500); margin-top: 0.25rem; }

/* Loading */
.loading { text-align: center; padding: 2rem; color: var(--gray-500); }

/* Back link */
.back-link { display: inline-block; color: var(--gray-500); text-decoration: none; margin-bottom: 1rem; font-size: 0.875rem; }
.back-link:hover { color: var(--gray-700); }

/* Diff viewer */
.diff-container { border: 1px solid var(--gray-200); border-radius: 8px; overflow: hidden; margin-top: 0.75rem; }
.diff-toolbar { display: flex; gap: 0; border-bottom: 1px solid var(--gray-200); background: var(--gray-50); }
.diff-tab {
    padding: 0.375rem 1rem;
    border: none;
    background: none;
    font-size: 0.8125rem;
    cursor: pointer;
    color: var(--gray-500);
    border-bottom: 2px solid transparent;
}
.diff-tab.active { color: var(--brand-red); border-bottom-color: var(--brand-red); }
.diff-split { display: grid; grid-template-columns: 1fr 1fr; }
.diff-pane { overflow-x: auto; min-width: 0; }
.diff-pane + .diff-pane { border-left: 1px solid var(--gray-200); }
.diff-pane-header { font-size: 0.75rem; font-weight: 600; padding: 0.375rem 0.75rem; border-bottom: 1px solid var(--gray-200); }
.diff-removed-header { background: #fef2f2; color: #dc2626; }
.diff-added-header { background: #f0fdf4; color: #16a34a; }
.diff-code { margin: 0; padding: 0; font-size: 0.8125rem; font-family: 'Consolas', 'Monaco', 'Courier New', monospace; line-height: 1.5; }
.diff-line { display: flex; min-height: 1.5em; }
.diff-line-num { display: inline-block; min-width: 2.5rem; padding: 0 0.5rem; text-align: right; color: var(--gray-300); -webkit-user-select: none; user-select: none; flex-shrink: 0; }
.diff-line-prefix { display: inline-block; width: 1.25rem; text-align: center; -webkit-user-select: none; user-select: none; flex-shrink: 0; font-weight: 600; }
.diff-line code { white-space: pre-wrap; word-break: break-all; padding-right: 0.75rem; }
.diff-removed { background: #fef2f2; }
.diff-removed .diff-line-prefix { color: #dc2626; }
.diff-added { background: #f0fdf4; }
.diff-added .diff-line-prefix { color: #16a34a; }
.diff-empty { background: var(--gray-50); }
.diff-unified { border-top: none; }

/* Syntax highlighting */
.hl-tag { color: #1e40af; }
.hl-attr { color: #9333ea; }
.hl-str { color: #16a34a; }
.hl-liquid { color: #ea580c; font-weight: 500; }

/* Modal */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000;
}
.modal {
    background: #fff;
    border-radius: 12px;
    padding: 1.5rem;
    width: 90%;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.modal h3 { font-size: 1.125rem; font-weight: 600; }