/* ============================================================
   SECTION: CSS Custom Properties
   ============================================================ */

:root {
  /* Sidebar / Header Chrome */
  --sidebar-bg:              #1E2328;
  --sidebar-active-bg:       rgba(255, 255, 255, 0.12);
  --sidebar-active-text:     #FFFFFF;
  --sidebar-inactive-text:   rgba(255, 255, 255, 0.65);
  --sidebar-border:          rgba(255, 255, 255, 0.10);
  --sidebar-width:           220px;
  --sidebar-collapsed-width: 60px;
  --header-height:           48px;

  /* Content Area */
  --bg:          #F4F6F9;
  --surface:     #FFFFFF;
  --card:        #FFFFFF;
  --card-border: #E5E9EF;
  --border:      #E5E9EF;

  /* Accent & Status */
  --accent:   #2563EB;
  --success:  #16A34A;
  --warning:  #D97706;
  --error:    #DC2626;

  /* Typography */
  --text:  #1E2328;
  --muted: #6B7280;

  /* Shape */
  --radius-card:  8px;
  --radius-btn:   6px;
  --radius-modal: 12px;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  12px;
  --space-lg:  16px;
  --space-xl:  24px;
  --space-2xl: 32px;
}

/* ============================================================
   SECTION: Reset & Base
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ============================================================
   SECTION: Top Header Bar
   Bootstrap Icons CDN must be loaded in base.html:
   https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css
   ============================================================ */

.top-header {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: var(--sidebar-bg);
  z-index: 1050;
  display: flex; align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
}

.btn-sidebar-toggle {
  background: transparent; border: none; cursor: pointer;
  color: var(--sidebar-inactive-text); font-size: 1.25rem;
  display: none; align-items: center; justify-content: center;
  width: 36px; height: 36px; padding: 0; flex-shrink: 0;
}
.btn-sidebar-toggle:hover { color: #FFFFFF; }

.header-title {
  font-size: 15px; font-weight: 600; color: #FFFFFF;
  margin-left: calc(var(--sidebar-width) + 0.5rem);
  transition: margin-left 0.25s ease;
}
body.sidebar-collapsed .header-title {
  margin-left: calc(var(--sidebar-collapsed-width) + 0.5rem);
}

.header-right {
  display: flex; align-items: center; gap: 12px;
}

.last-fetched {
  font-size: 12px; color: var(--sidebar-inactive-text); white-space: nowrap;
}

.btn-fetch {
  width: 32px; height: 32px; border-radius: var(--radius-btn);
  background: var(--accent); color: #FFFFFF;
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  transition: opacity 0.15s;
}
.btn-fetch:hover { opacity: 0.85; }
.btn-fetch:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-fetch.loading i { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.header-username {
  font-size: 13px; color: var(--sidebar-inactive-text);
}

.header-logout {
  font-size: 13px; color: var(--sidebar-inactive-text);
  padding: 4px 8px; border-radius: var(--radius-btn);
  transition: color 0.15s, background 0.15s;
}
.header-logout:hover { color: #FFFFFF; background: rgba(255, 255, 255, 0.10); }

/* ============================================================
   SECTION: Sidebar
   ============================================================ */

.sidebar {
  position: fixed; top: var(--header-height); left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - var(--header-height));
  background: var(--sidebar-bg);
  display: flex; flex-direction: column;
  z-index: 1040;
  overflow: hidden;
  transition: width 0.25s ease;
}

.sidebar-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 1.25rem;
  border-bottom: 1px solid var(--sidebar-border);
  flex-shrink: 0; overflow: hidden;
}
.sidebar-brand img { height: 28px; width: auto; flex-shrink: 0; }
.sidebar-brand-text {
  font-size: 15px; font-weight: 700; color: #FFFFFF;
  white-space: nowrap;
  transition: opacity 0.15s ease;
}

.sidebar-nav {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  padding: 0.5rem 0;
}
.sidebar-nav-link {
  display: flex; align-items: center;
  padding: 0.6rem 1.25rem;
  color: var(--sidebar-inactive-text);
  font-size: 14px; font-weight: 400;
  white-space: nowrap; overflow: hidden;
  transition: background 0.15s, color 0.15s;
}
.sidebar-nav-link i {
  font-size: 1rem; width: 1.25rem; flex-shrink: 0; text-align: center;
}
.sidebar-nav-link .nav-label {
  margin-left: 0.75rem;
  transition: opacity 0.15s ease;
}
.sidebar-nav-link:hover { background: rgba(255, 255, 255, 0.06); color: #FFFFFF; }
.sidebar-nav-link.active {
  background: var(--sidebar-active-bg);
  color: var(--sidebar-active-text);
  font-weight: 600;
}

.sidebar-footer {
  flex-shrink: 0; overflow: hidden;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--sidebar-border);
}
.sidebar-footer-username {
  font-size: 12px; color: var(--sidebar-inactive-text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-bottom: 4px;
  transition: opacity 0.15s ease;
}
.sidebar-footer-logout {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 13px; color: var(--sidebar-inactive-text);
  padding: 0.4rem 0;
  white-space: nowrap;
  transition: color 0.15s;
}
.sidebar-footer-logout:hover { color: #FFFFFF; }
.sidebar-footer-logout i { font-size: 0.9rem; flex-shrink: 0; }
.sidebar-footer-logout .nav-label { transition: opacity 0.15s ease; }

/* Collapse tab — fixed to the right edge of the sidebar, outside overflow */
.sidebar-collapse-tab {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  left: calc(var(--sidebar-width) - 1px);
  width: 16px; height: 48px;
  background: var(--sidebar-bg);
  border: 1px solid var(--sidebar-border); border-left: none;
  border-radius: 0 6px 6px 0;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--sidebar-inactive-text); font-size: 10px;
  z-index: 1041;
  transition: left 0.25s ease, background 0.15s;
}
.sidebar-collapse-tab:hover { background: #2a3038; color: #FFFFFF; }
.sidebar-collapse-tab i { transition: transform 0.25s ease; }
body.sidebar-collapsed .sidebar-collapse-tab {
  left: calc(var(--sidebar-collapsed-width) - 1px);
}
body.sidebar-collapsed .sidebar-collapse-tab i { transform: rotate(180deg); }

/* Mobile overlay backdrop */
.sidebar-overlay {
  display: none; position: fixed;
  top: 0; left: 0; width: 100vw; height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1039;
}
.sidebar-overlay.active { display: block; }

/* ============================================================
   SECTION: Collapsed State
   ============================================================ */

body.sidebar-collapsed .sidebar { width: var(--sidebar-collapsed-width); }

body.sidebar-collapsed .sidebar-brand { justify-content: center; padding: 1.25rem 0; }
body.sidebar-collapsed .sidebar-brand-text { opacity: 0; pointer-events: none; }

body.sidebar-collapsed .sidebar-nav-link { justify-content: center; padding: 0.6rem 0; }
body.sidebar-collapsed .sidebar-nav-link .nav-label {
  opacity: 0; pointer-events: none; width: 0; overflow: hidden;
}

body.sidebar-collapsed .sidebar-footer { display: flex; justify-content: center; padding: 0.75rem 0; }
body.sidebar-collapsed .sidebar-footer-username { opacity: 0; height: 0; margin: 0; }
body.sidebar-collapsed .sidebar-footer-logout { justify-content: center; padding: 0.4rem 0; }
body.sidebar-collapsed .sidebar-footer-logout .nav-label {
  opacity: 0; pointer-events: none; width: 0; overflow: hidden;
}

/* ============================================================
   SECTION: Main Content
   ============================================================ */

.main-content {
  margin-left: var(--sidebar-width);
  padding-top: var(--header-height);
  background: var(--bg);
  min-height: 100vh;
  transition: margin-left 0.25s ease;
}
body.sidebar-collapsed .main-content { margin-left: var(--sidebar-collapsed-width); }

.main-inner { padding: 1.5rem 1.75rem; }

.page-header { margin-bottom: 24px; }
.page-header h1 { font-size: 20px; font-weight: 600; color: var(--text); }

/* ============================================================
   SECTION: Stats Strip
   ============================================================ */

.stats-strip {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 16px; margin-bottom: 24px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 16px 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.stat-card__label {
  font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px;
}
.stat-card__value { font-size: 28px; font-weight: 700; color: var(--text); }
.stat-card--success .stat-card__value { color: var(--success); }
.stat-card--error   .stat-card__value { color: var(--error); }
.stat-card--warning .stat-card__value { color: var(--warning); }

/* ============================================================
   SECTION: Filter Row
   ============================================================ */

.filter-row {
  display: flex; gap: 12px; align-items: center;
  flex-wrap: wrap; margin-bottom: 24px;
}
.search-input {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-btn); color: var(--text);
  padding: 8px 12px; font-size: 14px; width: 240px;
  font-family: inherit;
}
.search-input::placeholder { color: var(--muted); }
.search-input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.chip {
  padding: 6px 14px; border-radius: 20px;
  border: 1px solid var(--card-border); background: var(--card);
  color: var(--muted); font-size: 13px; cursor: pointer;
  transition: all 0.15s; font-family: inherit;
}
.chip:hover { border-color: var(--accent); color: var(--text); }
.chip.active { background: var(--accent); color: #FFFFFF; border-color: var(--accent); font-weight: 600; }
.filter-divider { width: 1px; height: 24px; background: var(--card-border); }
.toggle-label {
  font-size: 13px; color: var(--muted);
  display: flex; align-items: center; gap: 6px; cursor: pointer;
}
.toggle-label input[type="checkbox"] { accent-color: var(--accent); }

/* ============================================================
   SECTION: Needs Attention Panel
   ============================================================ */

.attention-panel {
  background: rgba(220, 38, 38, 0.06);
  border: 1px solid rgba(220, 38, 38, 0.30);
  border-radius: var(--radius-card); padding: 16px 20px; margin-bottom: 24px;
}
.attention-panel__header {
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; user-select: none;
}
.attention-panel__title {
  font-size: 14px; font-weight: 600; color: var(--error);
  display: flex; align-items: center; gap: 8px; margin: 0;
}
.attention-count {
  display: none; font-size: 13px; font-weight: 500; opacity: 0.75;
}
.attention-panel.is-collapsed .attention-count { display: inline; }
.attention-chevron {
  color: var(--error); font-size: 18px; line-height: 1;
  display: inline-block;
  transform: rotate(90deg);
  transition: transform 0.25s ease;
}
.attention-panel.is-collapsed .attention-chevron { transform: rotate(0deg); }
.attention-panel__body {
  overflow: hidden;
  max-height: 1000px;
  padding-top: 12px;
  transition: max-height 0.35s ease, padding-top 0.35s ease;
}
.attention-panel.is-collapsed .attention-panel__body {
  max-height: 0;
  padding-top: 0;
}
.attention-panel__section {
  font-size: 11px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.06em;
  margin-top: 12px; margin-bottom: 6px;
}
.attention-panel__section:first-child { margin-top: 0; }
.attention-row {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 6px; border-radius: 4px;
  cursor: pointer; font-size: 13px; color: var(--text);
  transition: background 0.1s;
}
.attention-row:hover { background: rgba(220, 38, 38, 0.08); }
.attention-row--missing { color: var(--warning); }
.attention-row--missing:hover { background: rgba(217, 119, 6, 0.08); }
.attention-dot {
  width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0;
}
.attention-dot--error   { background: var(--error); }
.attention-dot--warning { background: var(--warning); }

/* ============================================================
   SECTION: Company Sections & Cards
   ============================================================ */

.company-section { margin-bottom: 32px; }
.company-heading {
  font-size: 12px; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 12px; padding-bottom: 8px;
  border-bottom: 1px solid var(--card-border);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.server-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card); border-left: 3px solid var(--card-border);
  padding: 16px; cursor: pointer; position: relative;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  transition: transform 0.15s, box-shadow 0.15s;
}
.server-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}
.server-card--success { border-left-color: var(--success); }
.server-card--error {
  border-left-color: var(--error);
  box-shadow: 0 0 0 1px rgba(220, 38, 38, 0.15), 0 1px 3px rgba(0, 0, 0, 0.08);
}
.server-card--missing { border-left-color: var(--warning); }
.card__name { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 4px; padding-right: 72px; }
.card__company { font-size: 12px; color: var(--muted); }
.card__time { font-size: 12px; color: var(--muted); margin-top: 12px; }
.card__history { display: flex; gap: 4px; margin-top: 8px; }
.card__history-dot { width: 8px; height: 8px; border-radius: 50%; }
.card__history-dot--success { background: var(--success); }
.card__history-dot--error   { background: var(--error); }
.status-pill {
  position: absolute; top: 12px; right: 12px;
  padding: 3px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
}
.status-pill--success { background: rgba(22, 163, 74, 0.15); color: var(--success); }
.status-pill--error   { background: rgba(220, 38, 38, 0.15); color: var(--error); }
.status-pill--missing { background: rgba(217, 119, 6, 0.15); color: var(--warning); }

/* ============================================================
   SECTION: Buttons
   ============================================================ */

.btn {
  padding: 8px 16px; border-radius: var(--radius-btn);
  font-size: 14px; font-weight: 500; cursor: pointer;
  border: none; transition: opacity 0.15s; font-family: inherit;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn-primary { background: var(--accent); color: #FFFFFF; }
.btn-secondary {
  background: var(--card); color: var(--text);
  border: 1px solid var(--card-border);
}
.btn-danger { background: var(--error); color: #FFFFFF; }
.btn:hover:not(:disabled) { opacity: 0.85; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ============================================================
   SECTION: Configuration Page Panels
   ============================================================ */

.info-panel {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-card); padding: 20px 24px; margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}
.info-panel__title {
  font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 12px;
}
.info-row {
  display: flex; gap: 16px; padding: 10px 0;
  border-bottom: 1px solid var(--card-border); font-size: 14px;
}
.info-row:last-child { border-bottom: none; }
.danger-zone {
  border: 1px solid rgba(220, 38, 38, 0.40);
  border-radius: var(--radius-card); padding: 20px 24px; margin-top: 32px;
}
.danger-zone__title { font-size: 16px; font-weight: 600; color: var(--error); margin-bottom: 4px; }
.danger-zone__desc { font-size: 14px; color: var(--muted); margin-bottom: 20px; }
.danger-zone__item {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 24px; padding: 16px 0; border-bottom: 1px solid var(--card-border);
}
.danger-zone__item:last-child { border-bottom: none; padding-bottom: 0; }
.danger-zone__item-info strong { font-size: 14px; color: var(--text); display: block; margin-bottom: 2px; }
.danger-zone__item-info span { font-size: 13px; color: var(--muted); }

/* ============================================================
   SECTION: Toast
   ============================================================ */

.toast-container {
  position: fixed; bottom: 24px; right: 24px;
  display: flex; flex-direction: column; gap: 8px; z-index: 9999;
}
.toast {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: var(--radius-card); padding: 12px 20px;
  font-size: 14px; color: var(--text);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  animation: toastIn 0.2s ease; min-width: 240px; max-width: 360px;
}
.toast--success { border-left: 3px solid var(--success); }
.toast--error   { border-left: 3px solid var(--error); }
.toast--info    { border-left: 3px solid var(--accent); }
@keyframes toastIn {
  from { transform: translateX(100%); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

/* ============================================================
   SECTION: Misc
   ============================================================ */

.version-badge {
  position: fixed; bottom: 8px; left: 12px;
  font-size: 11px; color: var(--muted); opacity: 0.6;
}
.empty-state {
  text-align: center; padding: 48px 24px;
  color: var(--muted); font-size: 14px;
}
.empty-state__icon { font-size: 32px; margin-bottom: 12px; opacity: 0.4; }

/* ============================================================
   SECTION: Responsive
   ============================================================ */

@media (max-width: 1024px) {
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 992px) {
  .btn-sidebar-toggle { display: flex; }
  .header-title { margin-left: 0; }
  .sidebar-collapse-tab { display: none; }
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    width: var(--sidebar-width) !important;
  }
  .sidebar.sidebar--open { transform: translateX(0); }
  .main-content { margin-left: 0 !important; }
}

@media (max-width: 768px) {
  .stats-strip { grid-template-columns: 1fr; }
  .main-inner { padding: 1rem; }
  .card-grid { grid-template-columns: 1fr; }
  .filter-row { flex-direction: column; align-items: stretch; }
  .search-input { width: 100%; }
  .danger-zone__item { flex-direction: column; gap: 12px; }
  .last-fetched { display: none; }
}

/* ============================================================
   SECTION: Users Page
   ============================================================ */

.data-table {
  width: 100%; border-collapse: collapse; font-size: 14px;
}
.data-table th {
  text-align: left; padding: 10px 14px;
  font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--muted);
  border-bottom: 1px solid var(--card-border);
}
.data-table td {
  padding: 12px 14px; border-bottom: 1px solid var(--card-border); vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(0, 0, 0, 0.025); }
.table-responsive { overflow-x: auto; }

.badge {
  display: inline-block; padding: 2px 10px; border-radius: 20px;
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
}
.badge--admin { background: rgba(37, 99, 235, 0.12); color: var(--accent); }
.badge--user  { background: rgba(107, 114, 128, 0.12); color: var(--muted); }

.actions-cell { display: flex; gap: 6px; align-items: center; }

.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: var(--radius-btn);
  border: 1px solid var(--card-border); background: var(--card);
  color: var(--text); cursor: pointer; font-size: 14px;
  transition: background 0.15s, color 0.15s, opacity 0.15s;
}
.btn-icon:hover:not(:disabled) { background: var(--bg); }
.btn-icon--danger { color: var(--error); border-color: rgba(220, 38, 38, 0.3); }
.btn-icon--danger:hover:not(:disabled) { background: rgba(220, 38, 38, 0.08); }
.btn-icon--muted { opacity: 0.35; cursor: not-allowed; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label  { font-size: 13px; font-weight: 500; color: var(--text); }
.form-control {
  padding: 8px 12px; border-radius: var(--radius-btn);
  border: 1px solid var(--card-border); background: var(--card);
  font-size: 14px; font-family: inherit; color: var(--text);
  outline: none; transition: border-color 0.15s;
}
.form-control:focus { border-color: var(--accent); }