/**
 * Academic Clarity Shared Component Styles
 * Reusable UI components for the educational light design.
 * Import AFTER tokens.css in all apps.
 */

/* ═══════════════════════════════════════════════════════
   NAVBAR
   ═══════════════════════════════════════════════════════ */
.nebula-navbar {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 1000;
  height: var(--nebula-header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--nebula-space-5);
  background: var(--nebula-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--nebula-border);
  animation: nebula-header-in var(--nebula-duration-med) var(--nebula-ease) both;
}

.nebula-navbar__brand {
  display: flex;
  align-items: center;
  gap: var(--nebula-space-2);
  font-family: var(--nebula-font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--nebula-text);
  text-decoration: none;
  letter-spacing: var(--nebula-tracking-display);
}

.nebula-navbar__brand-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--nebula-radius-sm);
  background: var(--nebula-accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  color: white;
  box-shadow: var(--nebula-shadow-1);
}

.nebula-navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--nebula-space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nebula-navbar__link {
  padding: var(--nebula-space-2) var(--nebula-space-3);
  border-radius: var(--nebula-radius-sm);
  font-family: var(--nebula-font-body);
  font-size: var(--nebula-text-caption);
  font-weight: 500;
  color: var(--nebula-text-muted);
  text-decoration: none;
  transition: color var(--nebula-duration-fast) var(--nebula-ease),
              background var(--nebula-duration-fast) var(--nebula-ease);
}

.nebula-navbar__link:hover,
.nebula-navbar__link--active {
  color: var(--nebula-accent-cyan);
  background: var(--nebula-accent-cyan-dim);
}

.nebula-navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--nebula-space-3);
}


/* ═══════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════ */
.nebula-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--nebula-space-2);
  padding: var(--nebula-space-2) var(--nebula-space-5);
  border: none;
  border-radius: var(--nebula-radius-full);
  font-family: var(--nebula-font-body);
  font-size: var(--nebula-text-caption);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--nebula-duration-med) var(--nebula-ease);
  position: relative;
  overflow: hidden;
}

.nebula-btn--primary {
  background: var(--nebula-accent-cyan);
  color: #FFFFFF;
  box-shadow: var(--nebula-shadow-1);
}

.nebula-btn--primary:hover {
  background: #268B80;
  box-shadow: var(--nebula-shadow-2);
  transform: translateY(-1px);
}

.nebula-btn--primary:active {
  transform: translateY(0);
}

.nebula-btn--ghost {
  background: transparent;
  color: var(--nebula-accent-cyan);
  border: 1px solid var(--nebula-accent-cyan);
  box-shadow: inset 0 0 0 0 var(--nebula-accent-cyan);
}

.nebula-btn--ghost:hover {
  background: var(--nebula-accent-cyan-dim);
  box-shadow: none;
  transform: translateY(-2px);
}

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

.nebula-btn--danger:hover {
  box-shadow: var(--nebula-shadow-2);
  transform: translateY(-2px);
}

.nebula-btn--sm {
  padding: var(--nebula-space-1) var(--nebula-space-3);
  font-size: var(--nebula-text-small);
}

.nebula-btn--lg {
  padding: var(--nebula-space-3) var(--nebula-space-6);
  font-size: var(--nebula-text-body);
}


/* ═══════════════════════════════════════════════════════
   INPUTS
   ═══════════════════════════════════════════════════════ */
.nebula-input {
  width: 100%;
  padding: var(--nebula-space-3) var(--nebula-space-4);
  background: var(--nebula-bg-input);
  border: 1px solid var(--nebula-border);
  border-radius: var(--nebula-radius-md);
  color: var(--nebula-text);
  font-family: var(--nebula-font-body);
  font-size: var(--nebula-text-body);
  outline: none;
  transition: border-color var(--nebula-duration-fast) var(--nebula-ease),
              box-shadow var(--nebula-duration-fast) var(--nebula-ease);
}

.nebula-input::placeholder {
  color: var(--nebula-text-dim);
}

.nebula-input:focus {
  border-color: var(--nebula-accent-cyan);
  box-shadow: 0 0 0 3px rgba(45, 159, 147, 0.12);
}

.nebula-input:hover:not(:focus) {
  border-color: var(--nebula-border-strong);
}

.nebula-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236B7280' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-inline-end: 2.5rem;
}

.nebula-label {
  display: block;
  margin-bottom: var(--nebula-space-2);
  font-family: var(--nebula-font-body);
  font-size: var(--nebula-text-caption);
  font-weight: 500;
  color: var(--nebula-text-muted);
  letter-spacing: var(--nebula-tracking-wide);
  text-transform: uppercase;
}


/* ═══════════════════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════════════════ */
.nebula-card {
  background: var(--nebula-bg-surface);
  border: 1px solid var(--nebula-border);
  border-radius: var(--nebula-radius-lg);
  padding: var(--nebula-space-5);
  box-shadow: var(--nebula-shadow-1);
  transition: transform var(--nebula-duration-med) var(--nebula-ease),
              box-shadow var(--nebula-duration-med) var(--nebula-ease),
              border-color var(--nebula-duration-med) var(--nebula-ease);
}

.nebula-card--interactive:hover {
  transform: translateY(-2px);
  box-shadow: var(--nebula-shadow-2);
  border-color: var(--nebula-accent-cyan);
}

.nebula-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--nebula-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--nebula-space-4);
  transition: box-shadow var(--nebula-duration-med) var(--nebula-ease);
}

.nebula-card__icon--cyan {
  background: var(--nebula-accent-cyan-dim);
  color: var(--nebula-accent-cyan);
}

.nebula-card__icon--purple {
  background: var(--nebula-accent-purple-dim);
  color: var(--nebula-accent-purple);
}

.nebula-card__icon--blue {
  background: rgba(59, 130, 246, 0.15);
  color: var(--nebula-accent-blue);
}

.nebula-card__icon--success {
  background: var(--nebula-success-dim);
  color: var(--nebula-success);
}

.nebula-card--interactive:hover .nebula-card__icon--cyan {
  box-shadow: none;
}

.nebula-card--interactive:hover .nebula-card__icon--purple {
  box-shadow: none;
}

.nebula-card__title {
  font-family: var(--nebula-font-display);
  font-size: var(--nebula-text-h3);
  font-weight: 700;
  color: var(--nebula-text);
  margin-bottom: var(--nebula-space-2);
}

.nebula-card__desc {
  font-size: var(--nebula-text-caption);
  color: var(--nebula-text-muted);
  line-height: var(--nebula-leading-body);
}


/* ═══════════════════════════════════════════════════════
   KPI METRIC CARDS
   ═══════════════════════════════════════════════════════ */
.nebula-kpi {
  background: var(--nebula-bg-surface);
  border: 1px solid var(--nebula-border);
  border-radius: var(--nebula-radius-lg);
  padding: var(--nebula-space-4);
  position: relative;
  overflow: hidden;
}

.nebula-kpi::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline-start: 0;
  width: 4px;
  height: 100%;
  border-radius: 0 var(--nebula-radius-sm) var(--nebula-radius-sm) 0;
}

.nebula-kpi--cyan::before  { background: var(--nebula-accent-cyan); box-shadow: none; }
.nebula-kpi--purple::before { background: var(--nebula-accent-purple); box-shadow: none; }
.nebula-kpi--blue::before   { background: var(--nebula-accent-blue); box-shadow: none; }
.nebula-kpi--success::before { background: var(--nebula-success); box-shadow: none; }

.nebula-kpi__label {
  font-size: var(--nebula-text-caption);
  color: var(--nebula-text-muted);
  margin-bottom: var(--nebula-space-1);
}

.nebula-kpi__value {
  font-family: var(--nebula-font-display);
  font-size: var(--nebula-text-h1);
  font-weight: 700;
  color: var(--nebula-text);
  letter-spacing: var(--nebula-tracking-display);
}

.nebula-kpi__trend {
  font-size: var(--nebula-text-small);
  font-weight: 600;
  margin-top: var(--nebula-space-1);
}

.nebula-kpi__trend--up   { color: var(--nebula-success); }
.nebula-kpi__trend--down { color: var(--nebula-danger); }


/* ═══════════════════════════════════════════════════════
   LANGUAGE SWITCHER
   ═══════════════════════════════════════════════════════ */
.nebula-lang-switcher {
  display: inline-flex;
  align-items: center;
  border-radius: var(--nebula-radius-full);
  border: 1px solid var(--nebula-border);
  overflow: hidden;
}

.nebula-lang-switcher__btn {
  padding: var(--nebula-space-1) var(--nebula-space-3);
  background: transparent;
  border: none;
  color: var(--nebula-text-muted);
  font-size: var(--nebula-text-small);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--nebula-duration-fast) var(--nebula-ease);
}

.nebula-lang-switcher__btn--active {
  background: var(--nebula-accent-cyan);
  color: white;
  box-shadow: none;
}


/* ═══════════════════════════════════════════════════════
   DATA TABLES
   ═══════════════════════════════════════════════════════ */
.nebula-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--nebula-text-caption);
}

.nebula-table th {
  padding: var(--nebula-space-3);
  text-align: start;
  font-weight: 600;
  color: var(--nebula-text-muted);
  font-size: var(--nebula-text-small);
  text-transform: uppercase;
  letter-spacing: var(--nebula-tracking-wide);
  border-bottom: 1px solid var(--nebula-border-strong);
  background: var(--nebula-bg-raised);
}

.nebula-table td {
  padding: var(--nebula-space-3);
  color: var(--nebula-text);
  border-bottom: 1px solid var(--nebula-border);
}

.nebula-table tr:hover td {
  background: rgba(45, 159, 147, 0.04);
}


/* ═══════════════════════════════════════════════════════
   STATUS BADGES
   ═══════════════════════════════════════════════════════ */
.nebula-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--nebula-space-1);
  padding: 2px var(--nebula-space-2);
  border-radius: var(--nebula-radius-full);
  font-size: var(--nebula-text-small);
  font-weight: 600;
}

.nebula-badge--success { background: var(--nebula-success-dim); color: var(--nebula-success); }
.nebula-badge--warning { background: var(--nebula-warning-dim); color: var(--nebula-warning); }
.nebula-badge--danger  { background: var(--nebula-danger-dim);  color: var(--nebula-danger); }
.nebula-badge--cyan    { background: var(--nebula-accent-cyan-dim); color: var(--nebula-accent-cyan); }
.nebula-badge--purple  { background: var(--nebula-accent-purple-dim); color: var(--nebula-accent-purple); }


/* ═══════════════════════════════════════════════════════
   WIZARD / STEPPER
   ═══════════════════════════════════════════════════════ */
.nebula-wizard {
  display: flex;
  flex-direction: column;
  gap: var(--nebula-space-5);
}

.nebula-wizard__step {
  display: flex;
  align-items: flex-start;
  gap: var(--nebula-space-4);
  position: relative;
}

.nebula-wizard__step::before {
  content: '';
  position: absolute;
  inset-inline-start: 19px;
  top: 44px;
  bottom: -24px;
  width: 2px;
  background: var(--nebula-border);
  transition: background var(--nebula-duration-med) var(--nebula-ease);
}

.nebula-wizard__step:last-child::before {
  display: none;
}

.nebula-wizard__step--active::before {
  background: var(--nebula-accent-cyan);
  box-shadow: none;
}

.nebula-wizard__number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--nebula-font-display);
  font-weight: 700;
  font-size: var(--nebula-text-caption);
  flex-shrink: 0;
  border: 2px solid var(--nebula-border);
  color: var(--nebula-text-dim);
  background: var(--nebula-bg-surface);
  transition: all var(--nebula-duration-med) var(--nebula-ease);
}

.nebula-wizard__step--active .nebula-wizard__number {
  border-color: var(--nebula-accent-cyan);
  color: var(--nebula-accent-cyan);
  background: var(--nebula-accent-cyan-dim);
  box-shadow: none;
}

.nebula-wizard__step--done .nebula-wizard__number {
  border-color: var(--nebula-success);
  color: var(--nebula-on-accent);
  background: var(--nebula-success);
}

.nebula-wizard__label {
  font-family: var(--nebula-font-display);
  font-weight: 600;
  color: var(--nebula-text-dim);
  transition: color var(--nebula-duration-med) var(--nebula-ease);
}

.nebula-wizard__step--active .nebula-wizard__label {
  color: var(--nebula-text);
}


/* ═══════════════════════════════════════════════════════
   MODALS
   ═══════════════════════════════════════════════════════ */
.nebula-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: nebula-fade-in var(--nebula-duration-fast) var(--nebula-ease) both;
}

.nebula-modal {
  background: white;
  border: 1px solid var(--nebula-border);
  border-radius: var(--nebula-radius-xl);
  padding: var(--nebula-space-6);
  max-width: 500px;
  width: 90%;
  box-shadow: var(--nebula-shadow-2);
  animation: nebula-scale-in var(--nebula-duration-med) var(--nebula-ease-spring) both;
}


/* ═══════════════════════════════════════════════════════
   TOOLTIPS
   ═══════════════════════════════════════════════════════ */
.nebula-tooltip {
  background: white;
  border: 1px solid var(--nebula-border);
  border-radius: var(--nebula-radius-md);
  padding: var(--nebula-space-2) var(--nebula-space-3);
  font-size: var(--nebula-text-small);
  color: var(--nebula-text);
  box-shadow: var(--nebula-shadow-2);
}


/* ═══════════════════════════════════════════════════════
   SIDEBAR APP SHELL
   ═══════════════════════════════════════════════════════ */
.nebula-sidebar {
  position: fixed;
  inset-block: 0;
  inset-inline-start: 0;
  width: var(--nebula-sidebar-width);
  display: flex;
  flex-direction: column;
  background: #1B2A4A;
  border-inline-end: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1100;
  overflow-y: auto;
  transition: inset-inline-start var(--nebula-duration-med) var(--nebula-ease);
}

.nebula-sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--nebula-space-2);
  padding: var(--nebula-space-4) var(--nebula-space-4) var(--nebula-space-3);
  font-family: var(--nebula-font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: #FFFFFF;
  text-decoration: none;
  flex-shrink: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nebula-sidebar__nav {
  flex: 1;
  padding: var(--nebula-space-3) var(--nebula-space-2);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nebula-sidebar__section-label {
  padding: var(--nebula-space-3) var(--nebula-space-3) var(--nebula-space-1);
  font-size: var(--nebula-text-small);
  font-weight: 600;
  letter-spacing: var(--nebula-tracking-wide);
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}

.nebula-sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--nebula-space-3);
  padding: var(--nebula-space-2) var(--nebula-space-3);
  margin-inline: var(--nebula-space-1);
  border-radius: var(--nebula-radius-sm);
  border-inline-start: 2px solid transparent;
  font-size: var(--nebula-text-caption);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--nebula-duration-fast) var(--nebula-ease),
              background var(--nebula-duration-fast) var(--nebula-ease),
              border-color var(--nebula-duration-fast) var(--nebula-ease);
}

.nebula-sidebar__link-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  font-size: 0.95rem;
}

.nebula-sidebar__link:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.08);
}

.nebula-sidebar__link--active {
  color: #FFFFFF;
  background: rgba(45, 159, 147, 0.2);
  border-inline-start-color: var(--nebula-accent-cyan);
}

.nebula-sidebar__footer {
  flex-shrink: 0;
  padding: var(--nebula-space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--nebula-space-2);
}

.nebula-sidebar__user-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--nebula-space-2);
}

.nebula-sidebar__username {
  font-size: var(--nebula-text-caption);
  color: #FFFFFF;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* #langSwitcher (shell.js) is a plain Bootstrap .form-select sitting on the
   dark sidebar background (#1B2A4A). Bootstrap's default .form-select colors
   come from --bs-body-color/--bs-body-bg, which are light-mode values and
   render invisible (or near-invisible) against this dark background — only
   the border shows. Give it explicit colors, same reasoning as
   .nebula-sidebar__username above needing an explicit #FFFFFF. */
#langSwitcher {
  background-color: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.25);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23FFFFFF' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
}

/* The expanded dropdown list is rendered by the OS/browser, typically with a
   white popup background regardless of page theme — keep its text dark so
   it stays readable there even though the closed box above is white-on-dark. */
#langSwitcher option {
  color: #1A1F2E;
  background-color: #FFFFFF;
}

.nebula-sidebar__backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1090;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--nebula-duration-med) var(--nebula-ease);
}

.nebula-sidebar__backdrop--visible {
  opacity: 1;
  pointer-events: auto;
}

.nebula-topbar {
  display: none;
  position: fixed;
  top: 0;
  inset-inline: 0;
  height: var(--nebula-topbar-height);
  align-items: center;
  gap: var(--nebula-space-3);
  padding-inline: var(--nebula-space-3);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--nebula-border);
  z-index: 1080;
}

.nebula-topbar__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
  border-radius: var(--nebula-radius-sm);
  border: 1px solid var(--nebula-border);
  background: transparent;
  color: var(--nebula-text);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
}

.nebula-topbar__toggle:hover {
  border-color: var(--nebula-accent-cyan);
  color: var(--nebula-accent-cyan);
}

.nebula-topbar__brand {
  flex: 1;
  font-family: var(--nebula-font-display);
  font-weight: 700;
  color: var(--nebula-text);
  text-decoration: none;
  font-size: 1rem;
}

body.nebula-has-sidebar {
  padding-inline-start: var(--nebula-sidebar-width);
}

@media (max-width: 991px) {
  body.nebula-has-sidebar {
    padding-inline-start: 0;
    padding-top: var(--nebula-topbar-height);
  }
  .nebula-sidebar {
    inset-inline-start: calc(-1 * var(--nebula-sidebar-width));
  }
  .nebula-sidebar--open {
    inset-inline-start: 0;
  }
  .nebula-topbar {
    display: flex;
  }
}


/* ═══════════════════════════════════════════════════════
   LAUNCHER
   ═══════════════════════════════════════════════════════ */
.nebula-launcher {
  display: flex;
  flex-direction: column;
  gap: var(--nebula-space-2);
}

.nebula-launcher__row {
  display: flex;
  align-items: center;
  gap: var(--nebula-space-4);
  padding: var(--nebula-space-3) var(--nebula-space-4);
  background: var(--nebula-bg-surface);
  border: 1px solid var(--nebula-border);
  border-radius: var(--nebula-radius-md);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--nebula-duration-fast) var(--nebula-ease),
              background var(--nebula-duration-fast) var(--nebula-ease);
}

.nebula-launcher__row:hover,
.nebula-launcher__row:focus-visible {
  border-color: var(--nebula-accent-cyan);
  background: var(--nebula-bg-raised);
  color: inherit;
}

.nebula-launcher__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink: 0;
  border-radius: var(--nebula-radius-sm);
  background: var(--nebula-accent-cyan-dim);
  color: var(--nebula-accent-cyan);
  font-family: var(--nebula-font-display);
  font-weight: 700;
  box-shadow: var(--nebula-shadow-1);
}

.nebula-launcher__body {
  flex: 1;
  min-width: 0;
}

.nebula-launcher__title {
  font-family: var(--nebula-font-display);
  font-weight: 700;
  font-size: var(--nebula-text-body);
  color: var(--nebula-text);
  margin: 0;
}

.nebula-launcher__desc {
  font-size: var(--nebula-text-caption);
  color: var(--nebula-text-muted);
  margin: 0.15rem 0 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nebula-launcher__chevron {
  flex-shrink: 0;
  color: var(--nebula-text-dim);
  font-size: 1.1rem;
  transition: color var(--nebula-duration-fast) var(--nebula-ease);
}

[dir="rtl"] .nebula-launcher__chevron {
  transform: scaleX(-1);
}

.nebula-launcher__row:hover .nebula-launcher__chevron {
  color: var(--nebula-accent-cyan);
}

.nebula-launcher__row--disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.nebula-launcher__badge {
  flex-shrink: 0;
}

@media (max-width: 560px) {
  .nebula-launcher__desc {
    white-space: normal;
  }
}


/* ═══════════════════════════════════════════════════════
   NAV OVERFLOW MENU
   ═══════════════════════════════════════════════════════ */
.nebula-nav-overflow {
  position: relative;
}

.nebula-nav-overflow__trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: var(--nebula-space-2) var(--nebula-space-3);
  border-radius: var(--nebula-radius-sm);
  font-family: inherit;
  font-size: var(--nebula-text-caption);
  font-weight: 500;
  color: var(--nebula-text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
}

.nebula-nav-overflow__trigger:hover,
.nebula-nav-overflow__trigger--open {
  color: var(--nebula-accent-cyan);
  background: var(--nebula-accent-cyan-dim);
}

.nebula-nav-overflow__menu {
  position: absolute;
  top: calc(100% + 6px);
  inset-inline-end: 0;
  min-width: 180px;
  background: white;
  border: 1px solid var(--nebula-border);
  border-radius: var(--nebula-radius-md);
  box-shadow: var(--nebula-shadow-2);
  padding: var(--nebula-space-2);
  display: flex;
  flex-direction: column;
  gap: 2px;
  z-index: 50;
}

.nebula-nav-overflow__menu a {
  padding: var(--nebula-space-2) var(--nebula-space-3);
  border-radius: var(--nebula-radius-sm);
  color: var(--nebula-text-muted);
  text-decoration: none;
  font-size: var(--nebula-text-caption);
}

.nebula-nav-overflow__menu a:hover {
  color: var(--nebula-accent-cyan);
  background: var(--nebula-accent-cyan-dim);
}


/* ═══════════════════════════════════════════════════════
   TAB STRIP
   ═══════════════════════════════════════════════════════ */
.nav-tabs {
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  -ms-overflow-style: none;
  scrollbar-width: thin;
  border-bottom: 1px solid var(--nebula-border);
  gap: 2px;
}

.nav-tabs::-webkit-scrollbar {
  height: 4px;
}

.nav-tabs::-webkit-scrollbar-thumb {
  background: var(--nebula-border-strong);
  border-radius: var(--nebula-radius-full);
}

.nav-tabs .nav-item {
  flex-shrink: 0;
}

.nav-tabs .nav-link {
  white-space: nowrap;
  border: none !important;
  border-radius: var(--nebula-radius-sm) var(--nebula-radius-sm) 0 0 !important;
  background: transparent !important;
  color: var(--nebula-text-muted) !important;
  font-size: var(--nebula-text-caption);
  font-weight: 500;
  padding: var(--nebula-space-2) var(--nebula-space-3) !important;
  transition: color var(--nebula-duration-fast) var(--nebula-ease),
              background var(--nebula-duration-fast) var(--nebula-ease);
}

.nav-tabs .nav-link:hover {
  color: var(--nebula-text) !important;
  background: var(--nebula-bg-raised) !important;
  isolation: isolate;
}

.nav-tabs .nav-link.active {
  color: var(--nebula-accent-cyan) !important;
  background: var(--nebula-accent-cyan-dim) !important;
  box-shadow: inset 0 -2px 0 var(--nebula-accent-cyan);
}

.card-header-tabs {
  margin: -0.5rem -0.5rem -0.5rem;
}


/* ═══════════════════════════════════════════════════════
   RECHARTS
   ═══════════════════════════════════════════════════════ */
.recharts-cartesian-grid line {
  stroke: var(--nebula-border) !important;
}

.recharts-text {
  fill: var(--nebula-text-muted) !important;
  font-family: var(--nebula-font-body) !important;
  font-size: 12px !important;
}

.recharts-tooltip-wrapper .recharts-default-tooltip {
  background: white !important;
  border: 1px solid var(--nebula-border) !important;
  border-radius: var(--nebula-radius-md) !important;
  box-shadow: var(--nebula-shadow-2) !important;
}

.recharts-tooltip-wrapper .recharts-default-tooltip .recharts-tooltip-label {
  color: var(--nebula-text) !important;
}