:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2333;
  --text-primary: #e6edf3;
  --text-secondary: #9aa0a6;
  --border: #2d3a4a;
  --accent-blue: #4fc3f7;
  --accent-green: #66bb6a;
  --accent-yellow: #ffd54f;
  --accent-red: #ef5350;
  --critical: #ef5350;
  --high: #ff8a65;
  --medium: #ffd54f;
  --low: #66bb6a;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg-primary); color: var(--text-primary); min-height: 100vh; }

.header { background: var(--bg-secondary); padding: 20px 32px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; position: sticky; top: 0; z-index: 40; }
.header h1 { font-size: 2rem; font-weight: 700; color: var(--accent-blue); position: absolute; left: 50%; transform: translateX(-50%); margin: 0; white-space: nowrap; pointer-events: none; }
.header-meta { display: flex; align-items: center; gap: 16px; font-size: 0.85rem; color: var(--text-secondary); flex-wrap: wrap; }
.account-badge { background: var(--bg-card); padding: 4px 10px; border-radius: 4px; border: 1px solid var(--border); }
.btn-refresh { background: var(--accent-blue); color: #000; border: none; padding: 8px 16px; border-radius: 6px; cursor: pointer; font-weight: 600; font-size: 0.85rem; transition: opacity 0.2s; }
.btn-refresh:hover { opacity: 0.85; }
.btn-refresh:disabled { opacity: 0.5; cursor: not-allowed; }

.tabs { display: flex; gap: 0; background: var(--bg-secondary); border-bottom: 1px solid var(--border); padding: 0 24px; flex-wrap: wrap; align-items: center; position: sticky; top: 0; z-index: 30; }

/* Severity color-coding legend, pinned to the right of the tab bar (all tabs) */
.severity-legend { margin-left: auto; display: flex; align-items: center; gap: 14px; padding: 0 4px; font-size: 12px; color: var(--text-secondary); white-space: nowrap; }
.severity-legend .legend-title { font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.severity-legend .legend-item { display: inline-flex; align-items: center; gap: 6px; }
.severity-legend .legend-dot { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.tab { padding: 12px 20px; text-decoration: none; color: var(--text-secondary); font-size: 0.9rem; font-weight: 500; border-bottom: 2px solid transparent; transition: all 0.2s; white-space: nowrap; }
.tab:hover { color: var(--text-primary); background: rgba(79,195,247,0.05); }
.tab.active { color: var(--accent-blue); border-bottom-color: var(--accent-blue); }

.main { padding: 24px 32px; max-width: 1400px; margin: 0 auto; }

/* KPI Cards */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.kpi-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; text-align: center; }
.kpi-label { font-size: 0.8rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.kpi-value { font-size: 1.8rem; font-weight: 700; color: var(--accent-blue); }
.kpi-sub { font-size: 0.75rem; color: var(--text-secondary); margin-top: 6px; }

/* Charts */
.charts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 16px; margin-bottom: 24px; }
.chart-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.chart-card h3 { font-size: 0.95rem; margin-bottom: 12px; color: var(--text-primary); }
.chart-container { height: 250px; position: relative; }

/* Category Cards */
.categories-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 12px; margin-bottom: 24px; }
.category-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.card-header { display: flex; justify-content: space-between; align-items: center; }
.card-title { font-size: 0.9rem; font-weight: 600; }
.card-score { font-size: 1.1rem; font-weight: 700; }

/* Tables */
.findings-section { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin-bottom: 24px; }
.findings-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.findings-header h3 { font-size: 1rem; }
.findings-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.findings-table th { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); color: var(--text-secondary); font-weight: 600; }
.findings-table td { padding: 10px 12px; border-bottom: 1px solid rgba(45,58,74,0.5); }
.findings-table tr:hover { background: rgba(79,195,247,0.03); }

.severity-badge { padding: 3px 8px; border-radius: 4px; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; }
.severity-badge.critical { background: rgba(239,83,80,0.15); color: var(--critical); }
.severity-badge.high { background: rgba(255,138,101,0.15); color: var(--high); }
.severity-badge.medium { background: rgba(255,213,79,0.15); color: var(--medium); }
.severity-badge.low { background: rgba(102,187,106,0.15); color: var(--low); }

.resource-tag { background: var(--bg-secondary); padding: 2px 8px; border-radius: 4px; font-size: 0.8rem; font-family: monospace; }

.cost-bar { display: inline-block; width: 80px; height: 8px; background: var(--bg-secondary); border-radius: 4px; margin-right: 8px; vertical-align: middle; }
.cost-bar-fill { height: 100%; border-radius: 4px; background: var(--accent-blue); transition: width 0.3s; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty-state h2 { color: var(--text-primary); margin-bottom: 12px; }

/* Architecture Tab */
.arch-container { max-width: 900px; margin: 0 auto; }
.arch-layer { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 8px; }
.arch-layer-header { font-size: 1.1rem; font-weight: 700; color: var(--accent-blue); margin-bottom: 12px; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.arch-services { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.arch-service { background: var(--bg-secondary); border: 1px solid var(--border); padding: 6px 12px; border-radius: 6px; font-size: 0.85rem; color: var(--text-primary); }
.arch-desc { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.5; }
.arch-arrow { text-align: center; font-size: 1.5rem; color: var(--accent-blue); margin: 4px 0; }

@media (max-width: 768px) {
  .header { padding: 16px; }
  .header h1 { position: static; transform: none; left: auto; white-space: normal; font-size: 1.5rem; width: 100%; text-align: center; }
  .provider-selector label, .provider-selector select { font-size: 1rem; }
  .main { padding: 16px; }
  .charts-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .tabs { padding: 0 12px; }
  .tab { padding: 10px 14px; font-size: 0.8rem; }
}


/* Remediation Cards */
.remediation-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 16px; }
.remediation-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.remediation-header h3 { font-size: 1rem; color: var(--text-primary); }
.remediation-desc { color: var(--text-secondary); font-size: 0.88rem; margin-bottom: 16px; line-height: 1.5; }
.cli-block { background: #0d1117; border: 1px solid #2d3a4a; border-radius: 8px; padding: 16px; }
.cli-label { color: var(--accent-blue); font-size: 0.8rem; font-weight: 600; margin-bottom: 6px; margin-top: 12px; }
.cli-label:first-child { margin-top: 0; }
.cli-block pre { margin: 0 0 12px 0; padding: 10px 14px; background: #161b22; border-radius: 6px; overflow-x: auto; }
.cli-block code { font-family: 'Consolas', 'Monaco', monospace; font-size: 0.82rem; color: #e6edf3; line-height: 1.6; white-space: pre-wrap; word-break: break-all; }


/* Region Selector */
.region-selector { display: flex; align-items: center; gap: 8px; }
.region-selector label { font-size: 0.85rem; color: var(--text-secondary); font-weight: 500; }
.region-selector select { background: var(--bg-card); color: var(--text-primary); border: 1px solid var(--border); border-radius: 6px; padding: 6px 12px; font-size: 0.85rem; cursor: pointer; appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239aa0a6'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; padding-right: 30px; min-width: 200px; }
.region-selector select:hover { border-color: var(--accent-blue); }
.region-selector select:focus { outline: none; border-color: var(--accent-blue); box-shadow: 0 0 0 2px rgba(79,195,247,0.2); }
.region-selector select option { background: var(--bg-secondary); color: var(--text-primary); }


/* Sub-tabs (nested tab navigation within a tab) */
.subtabs { display: flex; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; border-bottom: 1px solid var(--border); padding-bottom: 0; }
.subtab { padding: 8px 16px; text-decoration: none; color: var(--text-secondary); font-size: 0.85rem; font-weight: 500; border: 1px solid var(--border); border-bottom: none; border-radius: 8px 8px 0 0; background: var(--bg-secondary); transition: all 0.2s; white-space: nowrap; }
.subtab:hover { color: var(--text-primary); background: rgba(79,195,247,0.08); }
.subtab.active { color: var(--accent-blue); background: var(--bg-card); border-color: var(--accent-blue); border-bottom: 1px solid var(--bg-card); position: relative; top: 1px; }

/* LLM cost forecaster inputs */
.forecaster-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; align-items: end; }
.forecaster-input { display: flex; flex-direction: column; gap: 6px; }
.forecaster-input label { font-size: 0.8rem; color: var(--text-secondary); font-weight: 500; }
.forecaster-input input { background: var(--bg-secondary); color: var(--text-primary); border: 1px solid var(--border); border-radius: 6px; padding: 8px 12px; font-size: 0.9rem; }
.forecaster-input input:focus { outline: none; border-color: var(--accent-blue); box-shadow: 0 0 0 2px rgba(79,195,247,0.2); }

@media (max-width: 768px) {
  .subtabs { gap: 4px; }
  .subtab { padding: 8px 10px; font-size: 0.78rem; }
}


/* Provider Selector (left of header) */
.provider-selector { display: flex; align-items: center; gap: 10px; margin-right: auto; z-index: 41; }
.provider-selector label { font-size: 1.4rem; color: var(--accent-blue); font-weight: 700; }
.provider-selector select { background: var(--bg-card); color: var(--accent-blue); border: 1px solid var(--border); border-radius: 6px; padding: 8px 16px; font-size: 1.4rem; font-weight: 700; cursor: pointer; appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%234fc3f7'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 38px; min-width: 180px; }
.provider-selector select:hover { border-color: var(--accent-blue); }
.provider-selector select:focus { outline: none; border-color: var(--accent-blue); box-shadow: 0 0 0 2px rgba(79,195,247,0.2); }
.provider-selector select option { background: var(--bg-secondary); color: var(--text-primary); }

/* Work-in-progress modal (GCP/OCI) */
.wip-modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 100; }
.wip-modal-box { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 28px 32px; max-width: 420px; text-align: center; box-shadow: 0 10px 40px rgba(0,0,0,0.5); }
.wip-modal-box p { color: var(--text-primary); font-size: 0.95rem; margin-bottom: 20px; }
.wip-modal-box button { background: var(--accent-blue); color: #000; border: none; padding: 8px 20px; border-radius: 6px; cursor: pointer; font-weight: 600; font-size: 0.85rem; transition: opacity 0.2s; }
.wip-modal-box button:hover { opacity: 0.85; }