/* Volt Sentinel - High-Reliability Observability & Auto-Healing Design System */
:root {
  --bg-primary: #090d16;
  --bg-surface: #0f172a;
  --bg-card: #1e293b;
  --bg-card-hover: #243248;
  --border-subtle: #334155;
  --border-focus: #3b82f6;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;

  --status-operational: #10b981;
  --status-operational-bg: rgba(16, 185, 129, 0.12);
  --status-operational-border: rgba(16, 185, 129, 0.28);

  --status-degraded: #f59e0b;
  --status-degraded-bg: rgba(245, 158, 11, 0.12);
  --status-degraded-border: rgba(245, 158, 11, 0.28);

  --status-down: #ef4444;
  --status-down-bg: rgba(239, 68, 68, 0.12);
  --status-down-border: rgba(239, 68, 68, 0.28);

  --badge-healing: #a855f7;
  --badge-healing-bg: rgba(168, 85, 247, 0.12);
  --badge-healing-border: rgba(168, 85, 247, 0.3);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Navigation */
.sentinel-header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 50;
}

.sentinel-nav {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-badge {
  background-color: var(--color-primary);
  color: #ffffff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  letter-spacing: 0.08em;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-main);
  text-decoration: none;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-user-info {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.15s ease-in-out;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

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

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--text-muted);
}

.btn-danger-outline {
  background: transparent;
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.4);
}

.btn-danger-outline:hover {
  background-color: var(--status-down-bg);
  border-color: var(--status-down);
}

/* Flash alerts */
.flash-container {
  max-width: 1280px;
  margin: 1.25rem auto 0 auto;
  padding: 0 2rem;
  width: 100%;
}

.flash-notice {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--status-operational-border);
  color: #6ee7b7;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
}

.flash-alert {
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--status-down-border);
  color: #fca5a5;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
}

/* Main content wrapper */
.main-wrapper {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
  flex: 1;
}

/* Fleet Uptime Hero Section */
.hero-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  gap: 1.5rem;
}

.hero-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.hero-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
}

.hero-subtext {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Grid & Layout Sections */
.section-title-wrap {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-main);
}

.section-caption {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

/* Service Card */
.service-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.25rem;
  transition: border-color 0.15s ease, background-color 0.15s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-card:hover {
  border-color: #475569;
  background-color: var(--bg-card);
}

.service-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
  gap: 0.5rem;
}

.service-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
}

.service-url {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: none;
  word-break: break-all;
  display: inline-block;
  margin-top: 0.2rem;
}

.service-url:hover {
  color: #38bdf8;
  text-decoration: underline;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
  white-space: nowrap;
}

.status-operational {
  color: var(--status-operational);
  background-color: var(--status-operational-bg);
  border-color: var(--status-operational-border);
}

.status-degraded {
  color: var(--status-degraded);
  background-color: var(--status-degraded-bg);
  border-color: var(--status-degraded-border);
}

.status-down {
  color: var(--status-down);
  background-color: var(--status-down-bg);
  border-color: var(--status-down-border);
}

.service-metrics {
  display: flex;
  justify-content: space-between;
  padding-top: 0.85rem;
  margin-top: 0.85rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.82rem;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
  margin-top: 0.15rem;
}

/* Incidents Section */
.incidents-container {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  overflow: hidden;
}

.incidents-list {
  display: flex;
  flex-direction: column;
}

.incident-item {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: background-color 0.15s ease;
}

.incident-item:last-child {
  border-bottom: none;
}

.incident-item:hover {
  background-color: rgba(30, 41, 59, 0.4);
}

.incident-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.incident-service-name {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-main);
}

.incident-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.incident-time {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.incident-error-class {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: #f87171;
  background-color: rgba(239, 68, 68, 0.1);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

.incident-message {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.badge-auto-healed {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--badge-healing);
  background-color: var(--badge-healing-bg);
  border: 1px solid var(--badge-healing-border);
  width: fit-content;
  margin-top: 0.2rem;
}

.incidents-empty {
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.88rem;
}

/* Authentication Layout & Card */
.auth-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(80vh - 80px);
}

.auth-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 2rem;
  width: 100%;
  max-width: 440px;
}

.auth-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.auth-description {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.demo-credentials-card {
  background-color: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.demo-credentials-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #93c5fd;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.demo-credentials-body {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.85rem;
}

.form-group {
  margin-bottom: 1.15rem;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-input {
  width: 100%;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 0.6rem 0.85rem;
  color: var(--text-main);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  transition: border-color 0.15s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--border-focus);
}

.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  background-color: var(--bg-surface);
}