/* NOC Operations UI - Modern Pure CSS3
   Theme: Slate Dark, High Contrast (WCAG 2.2 AA >= 4.5:1)
   Zero external dependencies.
*/

:root {
  --bg-app: #0b0f19;
  --bg-card: #151c2c;
  --bg-card-hover: #1c263c;
  --bg-input: #0f1523;
  --border-color: #27344d;
  --border-focus: #3b82f6;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #06b6d4;

  --badge-bg-danger: #450a0a;
  --badge-text-danger: #fca5a5;
  --badge-bg-warning: #451a03;
  --badge-text-warning: #fcd34d;
  --badge-bg-success: #064e3b;
  --badge-text-success: #6ee7b7;
  --badge-bg-info: #083344;
  --badge-text-info: #67e8f9;

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

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
}

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

body {
  font-family: var(--font-system);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.5;
  font-size: 14px;
  min-height: 100vh;
}

/* Accessibility Utilities */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.monospace {
  font-family: var(--font-mono);
}

.text-right { text-align: right; }
.text-center { text-align: center; }
.text-danger { color: #f87171; }
.text-warning { color: #fbbf24; }
.text-info { color: #38bdf8; }
.text-success { color: #34d399; }

/* Header & Navigation */
.app-header {
  background-color: #111827;
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem 0;
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 0.75rem;
}

.branding h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #fff;
  display: inline-block;
}

.branding .sub-title {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-left: 0.5rem;
}

.system-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.clock-display {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  background-color: var(--bg-input);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.user-name {
  font-weight: 600;
}

.nav-tabs {
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
}

.nav-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
}

.nav-tab:hover {
  color: var(--text-main);
}

.nav-tab.active {
  color: #60a5fa;
  border-bottom-color: #3b82f6;
}

/* App Main Container */
.app-main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.25rem;
}

.view-section {
  display: none;
}

.view-section.active {
  display: block;
}

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.view-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
}

/* Cards & Containers */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

/* Banners */
.banner {
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
}

.banner-source {
  background-color: #172033;
  border: 1px solid #2d3e5e;
}

.banner-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.5rem 1rem;
}

.banner-warnings {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid #2d3e5e;
  color: var(--badge-text-warning);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.banner-warning {
  background-color: var(--badge-bg-warning);
  border: 1px solid #78350f;
  color: var(--badge-text-warning);
}

/* Filter Card */
.filter-card {
  background-color: #131a29;
}

.filter-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.presets-row {
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 0.75rem;
}

.filter-label {
  font-weight: 600;
  color: var(--text-muted);
}

.filter-sep {
  color: var(--border-color);
  margin: 0 0.25rem;
}

.custom-range-inputs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.custom-range-inputs label {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.search-row {
  justify-content: space-between;
}

.search-group, .action-filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-grow: 1;
  max-width: 380px;
}

.filter-actions {
  display: flex;
  gap: 0.5rem;
  margin-left: auto;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.metric-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
}

.metric-card.metric-authfail { border-top: 3px solid var(--color-danger); }
.metric-card.metric-flapping { border-top: 3px solid var(--color-info); }
.metric-card.metric-total { border-top: 3px solid var(--color-primary); }

.metric-title {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-val {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0.25rem 0;
  color: #fff;
}

.metric-sub {
  font-size: 0.85rem;
  color: var(--text-main);
  font-weight: 600;
}

.metric-note {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
}

/* Dashboard Tables Grid */
.dashboard-tables-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 1024px) {
  .dashboard-tables-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.table-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.table-header-bar h3 {
  font-size: 1rem;
  font-weight: 700;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.data-table th {
  background-color: #0f172a;
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.data-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.data-table tbody tr:hover {
  background-color: var(--bg-card-hover);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-family: inherit;
  font-weight: 600;
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
}

.btn:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.78rem;
}

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

.btn-secondary { background-color: #334155; color: #fff; }
.btn-secondary:hover { background-color: #475569; }

.btn-outline { background-color: transparent; border-color: var(--border-color); color: var(--text-main); }
.btn-outline:hover { background-color: #1e293b; }

.btn-ghost { background-color: transparent; color: var(--text-muted); }
.btn-ghost:hover { color: #fff; background-color: #1e293b; }

.btn-warning { background-color: #d97706; color: #fff; }
.btn-warning:hover { background-color: #b45309; }

.btn-danger { background-color: var(--color-danger); color: #fff; }

.btn-filter.active {
  background-color: #2563eb;
  color: #fff;
}

.btn-group {
  display: inline-flex;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.btn-group .btn {
  border-radius: 0;
  border: none;
  background-color: var(--bg-input);
  color: var(--text-muted);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  font-size: 0.72rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.badge-danger { background-color: var(--badge-bg-danger); color: var(--badge-text-danger); border: 1px solid #7f1d1d; }
.badge-warning { background-color: var(--badge-bg-warning); color: var(--badge-text-warning); border: 1px solid #78350f; }
.badge-success { background-color: var(--badge-bg-success); color: var(--badge-text-success); border: 1px solid #065f46; }
.badge-info { background-color: var(--badge-bg-info); color: var(--badge-text-info); border: 1px solid #155e75; }
.badge-outline { background-color: transparent; border: 1px solid var(--border-color); color: var(--text-muted); }

/* Form Controls */
.input {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.65rem;
  font-family: inherit;
  font-size: 0.85rem;
  width: 100%;
}

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

.input-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
}

.textarea {
  resize: vertical;
}

.form-group {
  margin-bottom: 0.85rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
}

.required { color: var(--color-danger); }

/* Account Detail Styles */
.detail-summary-card {
  background-color: #172033;
}

.detail-identity-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.account-identity-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  word-break: break-all;
}

.account-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.acc-stats-summary {
  display: flex;
  gap: 0.75rem;
}

.stat-box {
  background-color: var(--bg-app);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.4rem 0.75rem;
  text-align: center;
  min-width: 65px;
}

.stat-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.stat-val {
  font-size: 1.15rem;
  font-weight: 700;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.5rem 1rem;
  font-size: 0.85rem;
}

/* Gaps Analysis Grid */
.gaps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

@media (min-width: 768px) {
  .gaps-grid { grid-template-columns: 1fr 1fr; }
}

.gap-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.gap-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.gap-metric-row {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0;
  border-bottom: 1px solid #1e293b;
  font-size: 0.85rem;
}

.gap-notice {
  background-color: #1a2333;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.notice-card {
  background-color: #121927;
  border-left: 3px solid #3b82f6;
}

.notice-card h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.caveats-list {
  padding-left: 1.25rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.caveats-list li {
  margin-bottom: 0.25rem;
}

/* Ticket Detail Grid */
.ticket-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 1024px) {
  .ticket-detail-grid { grid-template-columns: 2fr 1fr; }
}

.ticket-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.ticket-num-badge {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: #60a5fa;
  margin-right: 0.5rem;
}

.ticket-title-display {
  display: inline-block;
  font-size: 1.2rem;
  font-weight: 700;
}

.ticket-badges {
  display: flex;
  gap: 0.4rem;
}

.ticket-section {
  margin-bottom: 1rem;
}

.ticket-section h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.ticket-desc-box {
  background-color: var(--bg-input);
  padding: 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  font-size: 0.88rem;
  white-space: pre-wrap;
}

.evidence-box {
  background-color: #111827;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-color);
  font-size: 0.82rem;
}

.comments-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
  max-height: 400px;
  overflow-y: auto;
}

.comment-item {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem;
}

.comment-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.comment-body {
  font-size: 0.85rem;
  white-space: pre-wrap;
}

.form-add-note {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.form-add-note label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.5rem;
}

/* Sidebar Action Boxes */
.action-box {
  background-color: #141c2e;
}

.action-box h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.4rem;
}

.audit-timeline {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.8rem;
  max-height: 400px;
  overflow-y: auto;
}

.audit-entry {
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-input);
  border-left: 2px solid #3b82f6;
}

.audit-time {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.empty-text {
  color: var(--text-dim);
  font-style: italic;
  font-size: 0.82rem;
}

/* Modal Dialog */
.modal-dialog {
  background: transparent;
  border: none;
  padding: 0;
  margin: auto;
  max-width: 600px;
  width: 90%;
  color: var(--text-main);
}

.modal-dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(2px);
}

.modal-content {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.modal-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.btn-close:hover {
  color: #fff;
}

.evidence-preview-card {
  background-color: #101624;
  border: 1px solid #1e293b;
  border-radius: var(--radius-md);
  padding: 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.82rem;
}

.evidence-preview-card h4 {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.evidence-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 0.75rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
}

/* Mobile Responsiveness (360px) */
@media (max-width: 640px) {
  body {
    font-size: 13px;
  }
  .app-header {
    padding: 0.5rem 0.75rem 0;
  }
  .app-main {
    padding: 0.75rem;
  }
  .search-group, .action-filter-group {
    max-width: 100%;
  }
  .filter-actions {
    width: 100%;
    justify-content: flex-end;
  }
  .detail-identity-header {
    flex-direction: column;
  }
  .acc-stats-summary {
    width: 100%;
    justify-content: space-between;
  }
}