/* =====================================================
   AZURE LEARNING SIMULATOR — MAIN STYLES
   Author: Adewale Adeagbo
   GitHub: cssadewale
   ===================================================== */

:root {
  --azure-blue: #0078D4;
  --azure-dark: #005A9E;
  --azure-light: #50E6FF;
  --azure-accent: #00B4D8;
  --topbar-bg: #0078D4;
  --topbar-height: 48px;
  --sidebar-width: 240px;
  --sidebar-collapsed: 48px;
  --sidebar-bg: #1b1b1c;
  --sidebar-hover: #2d2d2e;
  --sidebar-active: #0078D4;
  --main-bg: #f3f2f1;
  --card-bg: #ffffff;
  --card-border: #e1dfdd;
  --text-primary: #201f1e;
  --text-secondary: #605e5c;
  --text-muted: #8a8886;
  --success: #107c10;
  --warning: #d83b01;
  --danger: #a4262c;
  --info: #0078D4;
  --border-radius: 4px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.1);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.12);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.15);
  --transition: 0.2s ease;
  --font: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html, body {
  height: 100%;
  font-family: var(--font);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--main-bg);
  overflow-x: hidden;
}

/* ---- TOPBAR ---- */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-height);
  background: var(--topbar-bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-radius: var(--border-radius);
  transition: background var(--transition);
}
.hamburger:hover { background: rgba(255,255,255,0.1); }
.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: var(--transition);
}

.azure-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--border-radius);
  transition: background var(--transition);
  text-decoration: none;
}
.azure-logo:hover { background: rgba(255,255,255,0.1); }

.portal-title {
  color: white;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.simulator-badge {
  background: rgba(255,255,255,0.2);
  color: white;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.topbar-search {
  position: relative;
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
  padding: 4px 10px;
  gap: 8px;
  flex: 1;
  max-width: 500px;
  border: 1px solid transparent;
  transition: var(--transition);
}
.topbar-search:focus-within {
  background: white;
  border-color: white;
}
.topbar-search:focus-within svg { color: var(--azure-blue); }
.topbar-search svg { color: rgba(255,255,255,0.7); flex-shrink: 0; }
.topbar-search input {
  background: none;
  border: none;
  outline: none;
  color: white;
  font-size: 14px;
  font-family: var(--font);
  width: 100%;
}
.topbar-search:focus-within input { color: var(--text-primary); }
.topbar-search input::placeholder { color: rgba(255,255,255,0.6); }
.topbar-search:focus-within input::placeholder { color: var(--text-muted); }

.search-results {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: white;
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  z-index: 2000;
  display: none;
  max-height: 400px;
  overflow-y: auto;
}
.search-results.visible { display: block; }
.search-result-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  border-bottom: 1px solid #f3f2f1;
  transition: background var(--transition);
}
.search-result-item:hover { background: #f3f2f1; }
.search-result-item:last-child { border-bottom: none; }
.search-result-icon {
  width: 32px;
  height: 32px;
  background: #deecf9;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--azure-blue);
  flex-shrink: 0;
}
.search-result-text { flex: 1; }
.search-result-name { font-weight: 500; font-size: 13px; }
.search-result-category { font-size: 11px; color: var(--text-muted); }

.topbar-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: white;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: background var(--transition);
}
.topbar-btn:hover { background: rgba(255,255,255,0.1); }

.notif-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background: #d83b01;
  color: white;
  font-size: 9px;
  font-weight: 700;
  min-width: 14px;
  height: 14px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  background: rgba(255,255,255,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  border: 1.5px solid rgba(255,255,255,0.4);
  transition: var(--transition);
  margin-left: 4px;
}
.user-avatar:hover { background: rgba(255,255,255,0.3); }

/* ---- MAIN LAYOUT ---- */
.main-content {
  margin-top: var(--topbar-height);
  margin-left: var(--sidebar-width);
  min-height: calc(100vh - var(--topbar-height));
  padding: 20px;
  transition: margin-left var(--transition);
}

.main-content.sidebar-collapsed {
  margin-left: var(--sidebar-collapsed);
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font);
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: var(--azure-blue);
  color: white;
  border-color: var(--azure-blue);
}
.btn-primary:hover { background: var(--azure-dark); border-color: var(--azure-dark); }
.btn-secondary {
  background: white;
  color: var(--azure-blue);
  border-color: var(--azure-blue);
}
.btn-secondary:hover { background: #deecf9; }
.btn-danger {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}
.btn-danger:hover { background: #8e1c22; }
.btn-ghost {
  background: transparent;
  color: var(--azure-blue);
  border-color: transparent;
}
.btn-ghost:hover { background: #deecf9; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-icon { padding: 6px; }

/* ---- CARDS ---- */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}
.card-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.card-body { padding: 16px; }

/* ---- PAGE HEADER ---- */
.page-header {
  margin-bottom: 20px;
}
.page-breadcrumb {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.page-breadcrumb span { cursor: pointer; }
.page-breadcrumb span:hover { color: var(--azure-blue); text-decoration: underline; }
.page-title {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-title-icon {
  width: 36px;
  height: 36px;
  background: #deecf9;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--azure-blue);
}
.page-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}
.page-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

/* ---- TABS ---- */
.tab-bar {
  display: flex;
  border-bottom: 2px solid var(--card-border);
  margin-bottom: 20px;
  gap: 0;
  overflow-x: auto;
}
.tab-item {
  padding: 10px 16px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: var(--transition);
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
  font-family: var(--font);
}
.tab-item:hover { color: var(--azure-blue); background: #f3f2f1; }
.tab-item.active {
  color: var(--azure-blue);
  border-bottom-color: var(--azure-blue);
  font-weight: 600;
}

/* ---- TABLE ---- */
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th {
  background: #f3f2f1;
  padding: 10px 14px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--card-border);
  white-space: nowrap;
}
.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid #f3f2f1;
  font-size: 13px;
  vertical-align: middle;
}
.data-table tr:hover td { background: #f9f9f8; }
.data-table tr:last-child td { border-bottom: none; }

/* ---- STATUS BADGES ---- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.badge-running { background: #dff6dd; color: #107c10; }
.badge-running::before { background: #107c10; }
.badge-stopped { background: #fde7e9; color: #a4262c; }
.badge-stopped::before { background: #a4262c; }
.badge-pending { background: #fff4ce; color: #8a6700; }
.badge-pending::before { background: #f7c41f; }
.badge-info { background: #deecf9; color: #0078d4; }
.badge-info::before { background: #0078d4; }
.badge-warning { background: #fff4ce; color: #8a6700; }
.badge-warning::before { background: #f7c41f; }

/* ---- FORM ELEMENTS ---- */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.form-control {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #8a8886;
  border-radius: var(--border-radius);
  font-size: 13px;
  font-family: var(--font);
  color: var(--text-primary);
  background: white;
  outline: none;
  transition: border-color var(--transition);
}
.form-control:focus { border-color: var(--azure-blue); box-shadow: 0 0 0 1px var(--azure-blue); }
.form-control:disabled { background: #f3f2f1; color: var(--text-muted); }
select.form-control { cursor: pointer; }

/* ---- GRID HELPERS ---- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .main-content { padding: 12px; }
}
@media (max-width: 600px) {
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .topbar-search { max-width: 160px; }
}

/* ---- UTILITY ---- */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.text-muted { color: var(--text-muted); font-size: 12px; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: #d83b01; }
.text-azure { color: var(--azure-blue); }
.link { color: var(--azure-blue); cursor: pointer; text-decoration: none; }
.link:hover { text-decoration: underline; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state svg { margin-bottom: 16px; opacity: 0.4; }
.empty-state h3 { font-size: 16px; color: var(--text-secondary); margin-bottom: 8px; }
.empty-state p { font-size: 13px; }

/* ---- TOAST ---- */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: #323130;
  color: white;
  padding: 12px 16px;
  border-radius: var(--border-radius);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 280px;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  animation: slideInRight 0.3s ease;
}
.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.warning { border-left: 4px solid #d83b01; }
.toast.info { border-left: 4px solid var(--azure-blue); }
@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; transform: translateY(10px); }
}
.toast.removing { animation: fadeOut 0.3s ease forwards; }

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #c8c6c4; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #8a8886; }

/* ---- INFO BOX (Learning Hints) ---- */
.info-box {
  background: #deecf9;
  border: 1px solid #c7e0f4;
  border-left: 4px solid var(--azure-blue);
  border-radius: var(--border-radius);
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: 13px;
  color: #004578;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.info-box.warning {
  background: #fff4ce;
  border-color: #f7c41f;
  border-left-color: #d83b01;
  color: #3e2400;
}
.info-box.success {
  background: #dff6dd;
  border-color: #92c353;
  border-left-color: var(--success);
  color: #0b3c1e;
}

/* ---- PROGRESS BAR ---- */
.progress-bar {
  background: #f3f2f1;
  border-radius: 4px;
  height: 8px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--azure-blue);
  border-radius: 4px;
  transition: width 0.5s ease;
}
.progress-fill.success { background: var(--success); }
.progress-fill.warning { background: #f7c41f; }
.progress-fill.danger { background: var(--danger); }

/* ---- METRIC CARD ---- */
.metric-card {
  background: white;
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  padding: 16px;
  position: relative;
  overflow: hidden;
}
.metric-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.metric-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 4px 0;
  line-height: 1;
}
.metric-sub {
  font-size: 12px;
  color: var(--text-muted);
}
.metric-trend {
  font-size: 12px;
  font-weight: 600;
}
.metric-trend.up { color: var(--success); }
.metric-trend.down { color: var(--danger); }
.metric-icon {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--azure-blue);
  opacity: 0.15;
}

/* ---- CHART CONTAINER ---- */
.chart-container {
  position: relative;
  width: 100%;
  height: 200px;
}

/* ---- LOADING ---- */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--border-radius);
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ---- RESOURCE ICON ---- */
.resource-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}
.resource-icon-blue { background: #deecf9; color: var(--azure-blue); }
.resource-icon-green { background: #dff6dd; color: #107c10; }
.resource-icon-orange { background: #fff4ce; color: #8a6700; }
.resource-icon-red { background: #fde7e9; color: #a4262c; }
.resource-icon-purple { background: #f4f0fb; color: #8764b8; }