/* ==========================================================================
   Components - Reusable UI Components
   ========================================================================== */

.component-playground-page {
  min-height: 100vh;
  background: var(--color-app-shell-bg);
}

/* Panel - Generic container */
.panel {
  background: var(--color-component-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.panel--shadow {
  border: none;
  box-shadow: var(--shadow-lg);
}

/* Card - Content container */
.card {
  background: var(--color-component-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.card__header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.card__body {
  padding: var(--space-6);
}

.card__footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-tinted-surface);
}

/* Alert - Flash messages */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.alert--success {
  color: var(--color-success-700);
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
}

.alert--error {
  color: var(--color-danger-700);
  background-color: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
}

.alert--warning {
  color: var(--color-warning-600);
  background-color: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
}

.alert--info {
  color: var(--color-primary-700);
  background-color: var(--color-primary-50);
  border: 1px solid var(--color-primary-200);
}

/* Auth Layout - Centered login/signup pages */
.auth-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding: var(--space-8) var(--space-4);
  background: var(--color-tinted-surface);
}

.auth-panel {
  width: 100%;
  max-width: 24rem;
  background: var(--color-component-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-8);
}

.auth-panel__header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.auth-panel__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
}

.auth-panel__subtitle {
  color: var(--color-ink-light);
  font-size: var(--text-sm);
}

/* Dev quick-login picker (development only) */
.auth-dev-picker {
  width: 100%;
  max-width: 48rem;
  background: var(--color-component-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  border: 2px dashed var(--color-warning-400);
}

.auth-dev-picker__label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-warning-600);
  margin-bottom: var(--space-4);
}

.auth-dev-picker__group {
  margin-bottom: var(--space-4);
}

.auth-dev-picker__group:last-child {
  margin-bottom: 0;
}

.auth-dev-picker__school {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-ink-light);
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-1);
  border-bottom: 1px solid var(--color-border);
}

.auth-dev-picker__btn {
  display: inline-block;
  margin: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-sm);
  font-family: inherit;
  background: var(--color-tinted-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-ink);
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s;
}

.auth-dev-picker__btn:hover {
  background: var(--color-primary-50, #eff6ff);
  border-color: var(--color-primary-600);
  color: var(--color-primary-600);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-normal);
  border-radius: var(--radius-full);
  background: var(--color-gray-100);
  color: var(--color-ink-light);
  border: 1px solid transparent;
}

.badge--primary {
  background: var(--color-primary-100);
  color: var(--color-primary-700);
}

.badge--secondary {
  background: var(--color-secondary-100);
  color: var(--color-secondary-700);
}

.badge--success {
  background: var(--color-success-bg);
  color: var(--color-success-700);
}

.badge--danger {
  background: var(--color-danger-bg);
  color: var(--color-danger-700);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-color-scheme="light"]) .badge {
    background: transparent;
    border-color: var(--color-gray-600);
    color: var(--color-gray-300);
  }
  :root:not([data-color-scheme="light"]) .badge--primary {
    background: transparent;
    border-color: var(--color-primary-400);
    color: var(--color-primary-300);
  }
  :root:not([data-color-scheme="light"]) .badge--secondary {
    background: transparent;
    border-color: var(--color-secondary-600);
    color: color-mix(in srgb, var(--theme-secondary) 60%, white);
  }
  :root:not([data-color-scheme="light"]) .badge--success {
    background: transparent;
    border-color: var(--color-success-600);
    color: var(--color-success-500);
  }
  :root:not([data-color-scheme="light"]) .badge--danger {
    background: transparent;
    border-color: color-mix(in srgb, var(--color-danger-600) 60%, transparent);
    color: color-mix(in srgb, var(--color-danger-600) 80%, white);
  }
  :root:not([data-color-scheme="light"]) .feed-filter__count {
    background: var(--color-gray-700);
    color: var(--color-gray-200);
  }
}

:root[data-color-scheme="dark"] .badge {
  background: transparent;
  border-color: var(--color-gray-600);
  color: var(--color-gray-300);
}
:root[data-color-scheme="dark"] .badge--primary {
  background: transparent;
  border-color: var(--color-primary-400);
  color: var(--color-primary-300);
}
:root[data-color-scheme="dark"] .badge--secondary {
  background: transparent;
  border-color: var(--color-secondary-600);
  color: color-mix(in srgb, var(--theme-secondary) 60%, white);
}
:root[data-color-scheme="dark"] .badge--success {
  background: transparent;
  border-color: var(--color-success-600);
  color: var(--color-success-500);
}
:root[data-color-scheme="dark"] .badge--danger {
  background: transparent;
  border-color: color-mix(in srgb, var(--color-danger-600) 60%, transparent);
  color: color-mix(in srgb, var(--color-danger-600) 80%, white);
}
:root[data-color-scheme="dark"] .feed-filter__count {
  background: var(--color-gray-700);
  color: var(--color-gray-200);
}

/* Avatar */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-100);
  color: var(--color-primary-700);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
}

/* Sidebar */
.app-shell {
  min-height: 100vh;
  display: flex;
  background: var(--color-app-shell-bg);
}

.app-shell__content {
  flex: 1;
  min-width: 0;
}

.app-shell--demo {
  min-height: 26rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.sidebar {
  position: relative;
  z-index: 2;
  width: 18rem;
  background: var(--color-component-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  overflow: visible;
  transition: width var(--transition-normal), transform var(--transition-normal);
}

.sidebar::after {
  display: none;
}

.sidebar.is-collapsed {
  width: 5rem;
  overflow: hidden;
}

.sidebar.is-collapsed:hover,
.sidebar.is-collapsed:focus-within {
  overflow: visible;
}

.sidebar.is-collapsed .sidebar-label,
.sidebar.is-collapsed .sidebar-item__chevron,
.sidebar.is-collapsed .sidebar-subnav {
  display: none;
}

.sidebar__header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--font-semibold);
}

.sidebar__brand-mark {
  width: 5rem;
  height: 5rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--brand-primary, var(--theme-primary)), var(--brand-secondary, var(--theme-secondary)));
  color: var(--color-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex: 0 0 auto;
}

.sidebar__brand-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar__brand-name {
  text-align: left;
  font-size: 1.1rem;
  line-height: 1.5;
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--color-ink);
  padding-left: 5px;
}

.sidebar__brand-name--fallback {
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sidebar.is-collapsed .sidebar__brand-mark {
  width: 2.5rem;
  height: 2.5rem;
}

.sidebar__collapse {
  position: absolute;
  top: 2rem;
  right: -0.875rem;
  z-index: 1;
  border: 1px solid var(--color-sidebar-handle-border);
  background: var(--color-sidebar-handle-bg);
  color: var(--color-white);
  width: 1.75rem;
  height: 3rem;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  border-left: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--sidebar-handle-shadow);
  cursor: pointer;
  transition: right var(--transition-normal), opacity var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
}

.sidebar__collapse::before {
  content: "";
  display: block;
  width: 0.625rem;
  height: 1.75rem;
  border-radius: var(--radius-sm);
  background-image:
    repeating-linear-gradient(
      to bottom,
      color-mix(in srgb, var(--color-white) 55%, transparent) 0 2px,
      transparent 2px 5px
    );
  opacity: 1;
}

.sidebar__collapse::after {
  content: "";
  position: absolute;
  left: -0.75rem;
  top: 0;
  bottom: 0;
  width: 0.75rem;
}

.sidebar__collapse:hover {
  color: var(--color-white);
  background: var(--color-sidebar-handle-hover);
}

.sidebar__collapse svg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 0.9rem;
  height: 0.9rem;
  transition: transform var(--transition-fast);
}

.sidebar.is-collapsed .sidebar__collapse {
  right: 0;
  opacity: 0;
  pointer-events: none;
}

.sidebar.is-collapsed .sidebar__collapse svg {
  transform: translate(-50%, -50%) rotate(180deg);
}

.sidebar.is-collapsed:hover .sidebar__collapse,
.sidebar.is-collapsed:focus-within .sidebar__collapse {
  opacity: 1;
  pointer-events: auto;
  right: -1.45rem;
}

.sidebar__collapse svg,
.sidebar-mobile-trigger svg,
.sidebar-item svg {
  width: 1rem;
  height: 1rem;
}

.sidebar__nav {
  display: grid;
  gap: var(--space-2);
}

.sidebar__footer {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.sidebar-admin {
  border: 1px solid color-mix(in srgb, var(--theme-primary) 30%, var(--color-component-surface));
  background: color-mix(in srgb, var(--theme-primary) 8%, var(--color-component-surface));
  border-radius: var(--radius-md);
  padding: var(--space-2);
}

.sidebar-admin__label {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink-light);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sidebar-theme {
  margin-bottom: var(--space-2);
}

.sidebar-theme__label {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-ink-light);
}

.sidebar-theme__select {
  width: 100%;
  min-height: 2rem;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
}

.sidebar-admin__link {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-primary-700);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
}

.sidebar-admin__link:hover {
  background: color-mix(in srgb, var(--theme-primary) 14%, var(--color-component-surface));
  text-decoration: none;
}

.sidebar__group {
  display: grid;
  gap: var(--space-1);
}

.sidebar-item {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--color-ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}

.sidebar-item:hover {
  background: color-mix(in srgb, var(--theme-primary) 10%, var(--color-component-surface));
}

.sidebar-item__left {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.sidebar-item__chevron {
  transition: transform var(--transition-fast);
  color: var(--color-ink-light);
}

.sidebar-item[aria-expanded="true"] .sidebar-item__chevron {
  transform: rotate(90deg);
}

.sidebar-item--parent {
  font-weight: var(--font-medium);
}

.sidebar-item--child {
  color: var(--color-ink-light);
}

.sidebar-item--grandchild {
  padding-left: calc(var(--space-6) + var(--space-2));
  color: var(--color-ink-light);
}

.sidebar-subnav {
  display: grid;
  gap: var(--space-1);
  padding-left: var(--space-2);
  border-left: 1px solid var(--color-border);
  margin-left: var(--space-2);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-color-scheme="light"]) .sidebar-item {
    color: var(--color-gray-200);
  }

  :root:not([data-color-scheme="light"]) .sidebar-item--child,
  :root:not([data-color-scheme="light"]) .sidebar-item--grandchild {
    color: var(--color-gray-300);
  }

  :root:not([data-color-scheme="light"]) .sidebar-item__chevron {
    color: var(--color-gray-400);
  }

  :root:not([data-color-scheme="light"]) .sidebar-admin__label,
  :root:not([data-color-scheme="light"]) .sidebar-theme__label {
    color: var(--color-gray-400);
  }

  :root:not([data-color-scheme="light"]) .sidebar-admin__link {
    color: var(--color-gray-300);
  }

  :root:not([data-color-scheme="light"]) .sidebar__brand-name {
    color: var(--color-gray-100);
  }

  :root:not([data-color-scheme="light"]) .sidebar-subnav {
    border-left-color: var(--color-gray-600);
  }
}

:root[data-color-scheme="dark"] .sidebar-item {
  color: var(--color-gray-200);
}

:root[data-color-scheme="dark"] .sidebar-item--child,
:root[data-color-scheme="dark"] .sidebar-item--grandchild {
  color: var(--color-gray-300);
}

:root[data-color-scheme="dark"] .sidebar-item__chevron {
  color: var(--color-gray-400);
}

:root[data-color-scheme="dark"] .sidebar-admin__label,
:root[data-color-scheme="dark"] .sidebar-theme__label {
  color: var(--color-gray-400);
}

:root[data-color-scheme="dark"] .sidebar-admin__link {
  color: var(--color-gray-300);
}

:root[data-color-scheme="dark"] .sidebar__brand-name {
  color: var(--color-gray-100);
}

:root[data-color-scheme="dark"] .sidebar-subnav {
  border-left-color: var(--color-gray-600);
}

.sidebar-subnav[hidden] {
  display: none;
}

.sidebar-mobile-trigger {
  display: none;
}

.sidebar-overlay {
  display: none;
}

body.has-mobile-sidebar {
  overflow: hidden;
}

.toast-stack {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  width: min(24rem, calc(100vw - var(--space-8)));
  z-index: 1000;
  display: grid;
  gap: var(--space-2);
}

.toast {
  margin-bottom: 0;
  box-shadow: var(--shadow-lg);
  animation: toast-fade-in 240ms ease-out;
  transition: opacity 220ms ease, transform 220ms ease;
}

.toast.is-dismissing {
  opacity: 0;
  transform: translateY(-8px);
}

@keyframes toast-fade-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 640px) {
  .toast-stack {
    top: var(--space-3);
    left: var(--space-3);
    right: var(--space-3);
    width: auto;
  }
}

@media (max-width: 768px) {
  .app-shell--demo .sidebar-mobile-trigger,
  .app-shell--demo .sidebar-overlay {
    display: none;
  }

  .app-shell--demo .sidebar {
    position: relative;
    inset: auto;
    width: 18rem;
    transform: none;
    border-right: 1px solid var(--color-border);
    box-shadow: none;
  }

  .app-shell--demo.is-mobile-open .sidebar {
    transform: none;
  }

  .sidebar-mobile-trigger {
    position: fixed;
    top: var(--space-4);
    left: var(--space-4);
    z-index: 1300;
    display: inline-flex;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-component-surface);
    color: var(--color-ink);
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
  }

  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgb(0 0 0 / 0.35);
    border: 0;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
    z-index: 1200;
  }

  .app-shell.is-mobile-open .sidebar-overlay {
    display: block;
    opacity: 1;
    pointer-events: auto;
  }

  .sidebar {
    position: fixed;
    inset: 0;
    z-index: 1250;
    width: 100vw;
    transform: translateX(-100%);
    border-right: 0;
    box-shadow: var(--shadow-lg);
  }

  .app-shell.is-mobile-open .sidebar {
    transform: translateX(0);
  }

  .sidebar__collapse {
    display: none;
  }
}

.theme-preview {
  background: var(--color-component-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.theme-preview__swatches {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  min-height: 4rem;
}

.theme-preview__swatch--primary { background: var(--theme-primary); }
.theme-preview__swatch--secondary { background: var(--theme-secondary); }
.theme-preview__swatch--surface { background: var(--theme-surface-tint); }

.theme-preview__body {
  padding: var(--space-3);
  background: var(--theme-surface-tint);
}

.theme-preview__chip {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-white);
  background: var(--theme-primary);
}

.avatar--sm {
  width: 2rem;
  height: 2rem;
  font-size: var(--text-xs);
}

.avatar--lg {
  width: 3rem;
  height: 3rem;
  font-size: var(--text-base);
}

/* Toggle Switch */
.switch {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  width: fit-content;
}

.switch__input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.switch__track {
  width: 2.75rem;
  height: 1.5rem;
  border-radius: var(--radius-full);
  background: var(--color-switch-track-off);
  border: 1px solid var(--color-border-dark);
  display: inline-flex;
  align-items: center;
  padding: 0.125rem;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.switch__thumb {
  width: 1.125rem;
  height: 1.125rem;
  border-radius: var(--radius-full);
  background: var(--color-switch-thumb);
  box-shadow: var(--shadow-sm);
  transform: translateX(0);
  transition: transform var(--transition-fast);
}

.switch__label {
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.switch__input:checked + .switch__track {
  background: var(--color-primary-600);
  border-color: var(--color-primary-700);
}

.switch__input:checked + .switch__track .switch__thumb {
  transform: translateX(1.25rem);
}

.switch__input:focus-visible + .switch__track {
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.switch__input:disabled + .switch__track {
  opacity: 0.6;
}

.switch__input:disabled ~ .switch__label {
  color: var(--color-ink-light);
}

.switch:has(.switch__input:disabled) {
  cursor: not-allowed;
}

/* Masquerade Banner */
.masquerade-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--color-warning-600);
  color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

.masquerade-banner__stop {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--color-white);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.masquerade-banner__stop:hover {
  background: rgba(255, 255, 255, 0.35);
}

body:has(.masquerade-banner) {
  padding-top: 2.5rem;
  --masquerade-banner-height: 2.5rem;
}

/* Masquerade Picker */
.masquerade-picker__wrapper {
  position: relative;
}

.masquerade-picker__input {
  width: 100%;
  min-height: 2rem;
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
}

.masquerade-picker__dropdown {
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  max-height: 15rem;
  overflow-y: auto;
  background: var(--color-component-surface);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--space-1);
  z-index: 100;
}

.masquerade-picker__result {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  padding: var(--space-2);
  border: 0;
  background: transparent;
  color: var(--color-ink);
  cursor: pointer;
  text-align: left;
  font-size: var(--text-xs);
  border-radius: 0;
}

.masquerade-picker__result:hover {
  background: var(--color-primary-50);
}

.masquerade-picker__result + .masquerade-picker__result {
  border-top: 1px solid var(--color-border);
}

.masquerade-picker__result-name {
  font-weight: var(--font-medium);
  color: var(--color-ink);
}

.masquerade-picker__result-email {
  color: var(--color-ink-light);
  font-size: var(--text-xs);
}

.masquerade-picker__empty {
  padding: var(--space-3);
  text-align: center;
  color: var(--color-ink-light);
  font-size: var(--text-xs);
}

.masquerade-picker__active {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  background: color-mix(in srgb, var(--color-warning-600) 15%, var(--color-component-surface));
  border: 1px solid color-mix(in srgb, var(--color-warning-600) 30%, var(--color-border));
  border-radius: var(--radius-md);
  min-height: 2rem;
}

.masquerade-picker__active-name {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--color-ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.masquerade-picker__stop-btn {
  padding: 0.125rem var(--space-2);
  font-size: 0.625rem;
  background: var(--color-danger-600);
  color: var(--color-white);
  border: 0;
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
}

.masquerade-picker__stop-btn:hover {
  background: var(--color-danger-700);
}

/* Activity Feed */
.feed-page {
  max-width: 48rem;
  margin: 0 auto;
  padding: var(--space-6);
}

.feed-header {
  margin-bottom: var(--space-4);
}

.feed-header__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin: 0;
}

.feed-header__subtitle {
  font-size: var(--text-sm);
  color: var(--color-ink-light);
  margin: var(--space-1) 0 0;
}

.feed-filters {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-3);
}

.feed-filter {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-component-surface);
  color: var(--color-ink-light);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.feed-filter:hover {
  border-color: var(--color-primary-300);
  color: var(--color-ink);
  background: color-mix(in srgb, var(--theme-primary) 10%, var(--color-component-surface));
}

.feed-filter--active {
  background: var(--theme-primary);
  border-color: var(--theme-primary);
  color: var(--color-white);
  font-weight: var(--font-medium);
}

.feed-filter__count {
  font-size: var(--text-xs);
  background: var(--color-gray-100);
  padding: 0 var(--space-1);
  border-radius: var(--radius-full);
  min-width: 1.25rem;
  text-align: center;
}

.feed-filter--active .feed-filter__count {
  background: rgba(255, 255, 255, 0.25);
  color: var(--color-white);
}

.feed-list {
  display: grid;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.feed-item {
  display: grid;
  grid-template-columns: 1.5rem 2.5rem 1fr;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4);
  background: var(--color-component-surface);
  align-items: start;
}

.feed-item--unread {
  background: color-mix(in srgb, var(--theme-surface-tint) var(--feed-unread-tint, 50%), var(--color-component-surface));
}

.feed-item--urgent.feed-item--unread {
  background: color-mix(in srgb, var(--color-danger-600) var(--feed-urgent-tint, 8%), var(--color-component-surface));
}

.feed-item__indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--space-2);
}

.feed-item__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-600);
}

.feed-item__dot--urgent {
  background: var(--color-danger-600);
}

.feed-item__dot--low {
  background: var(--color-gray-400);
}

.feed-item__avatar {
  padding-top: 0.125rem;
}

.feed-item__content {
  min-width: 0;
}

.feed-item__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}

.feed-item__title {
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  color: var(--color-ink);
}

.feed-item--unread .feed-item__title {
  font-weight: var(--font-bold);
}

.feed-item__meta {
  display: flex;
  gap: var(--space-1);
  flex-shrink: 0;
}

.feed-item__sender {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-ink);
  margin-bottom: var(--space-2);
}

.feed-item__time {
  color: var(--color-ink-lighter);
}

.feed-item__time::before {
  content: "\00b7";
  margin-right: var(--space-1);
}

.feed-item__body {
  font-size: var(--text-sm);
  color: var(--color-ink);
  line-height: 1.5;
}

.feed-item__body p {
  margin: 0;
}

.feed-item__expires {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-warning-600);
  font-weight: var(--font-medium);
}

.feed-empty {
  padding: var(--space-8);
  text-align: center;
  color: var(--color-ink-light);
  background: var(--color-component-surface);
}

.feed-empty svg {
  color: var(--color-gray-300);
  margin-bottom: var(--space-3);
}

.feed-empty p {
  margin: 0;
  font-size: var(--text-sm);
}

/* ==========================================================================
   Calendar
   ========================================================================== */

.cal-page {
  max-width: 56rem;
  margin: 0 auto;
  padding: var(--space-6);
}

/* Header */
.cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.cal-header__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin: 0;
}

.cal-header__controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.cal-header__month {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  min-width: 10rem;
  text-align: center;
  color: var(--color-ink);
}

.cal-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-component-surface);
  color: var(--color-ink);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cal-nav-btn:hover {
  background: color-mix(in srgb, var(--theme-primary) 10%, var(--color-component-surface));
  border-color: var(--color-primary-300);
}

.cal-nav-btn svg {
  width: 1rem;
  height: 1rem;
  overflow: visible;
  flex-shrink: 0;
}

.cal-today-btn {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-component-surface);
  color: var(--color-ink);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.cal-today-btn:hover {
  background: color-mix(in srgb, var(--theme-primary) 10%, var(--color-component-surface));
  border-color: var(--color-primary-300);
}

/* Grid */
.cal-grid {
  background: var(--color-component-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-6);
}

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  border-bottom: 1px solid var(--color-border);
}

.cal-weekday {
  padding: var(--space-2) var(--space-1);
  text-align: center;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-ink-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.cal-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
}

.cal-day {
  position: relative;
  min-height: 5rem;
  padding: var(--space-1);
  border: 0;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: background var(--transition-fast);
}

.cal-day:nth-child(7n) {
  border-right: 0;
}

.cal-days > .cal-day:nth-last-child(-n+7) {
  border-bottom: 0;
}

.cal-day:hover {
  background: color-mix(in srgb, var(--theme-primary) 6%, transparent);
}

.cal-day--selected {
  background: color-mix(in srgb, var(--theme-primary) 12%, transparent);
}

.cal-day--selected:hover {
  background: color-mix(in srgb, var(--theme-primary) 16%, transparent);
}

.cal-day__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-ink);
  line-height: 1;
}

.cal-day--other-month .cal-day__number {
  color: var(--color-ink-lighter);
}

.cal-day--today .cal-day__number {
  background: var(--theme-primary);
  color: var(--color-white);
  font-weight: var(--font-bold);
}

.cal-day__dots {
  display: flex;
  gap: 3px;
  padding: 0 2px;
  flex-wrap: wrap;
}

.cal-day__dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--theme-primary);
}

.cal-day__dot.cal-event--primary {
  background: var(--theme-primary);
}

.cal-day__dot.cal-event--secondary {
  background: var(--theme-secondary);
}

.cal-day__dot.cal-event--accent {
  background: var(--color-warning-500);
}

.cal-day__more {
  font-size: 0.5rem;
  color: var(--color-ink-lighter);
  line-height: 6px;
}

/* Events list */
.cal-events {
  margin-top: var(--space-2);
}

.cal-events__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.cal-events__heading {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin: 0;
  color: var(--color-ink);
}

.cal-events__list {
  display: grid;
  gap: var(--space-3);
}

.cal-events__empty {
  padding: var(--space-8);
  text-align: center;
  color: var(--color-ink-light);
  background: var(--color-component-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.cal-events__empty svg {
  color: var(--color-gray-300);
  margin-bottom: var(--space-3);
}

.cal-events__empty p {
  margin: 0;
  font-size: var(--text-sm);
}

/* Event card */
.cal-event-card {
  display: flex;
  width: 100%;
  text-align: left;
  font: inherit;
  padding: 0;
  background: var(--color-component-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.cal-event-card:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-primary-300);
}

.cal-event-card__accent {
  width: 4px;
  flex-shrink: 0;
  background: var(--theme-primary);
}

.cal-event--primary .cal-event-card__accent {
  background: var(--theme-primary);
}

.cal-event--secondary .cal-event-card__accent {
  background: var(--theme-secondary);
}

.cal-event--accent .cal-event-card__accent {
  background: var(--color-warning-500);
}

.cal-event-card__body {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  min-width: 0;
}

.cal-event-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}

.cal-event-card__time {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--theme-primary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.cal-event--secondary .cal-event-card__time {
  color: var(--theme-secondary);
}

.cal-event--accent .cal-event-card__time {
  color: var(--color-warning-600);
}

.cal-event-card__title {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  text-transform: none;
  margin: 0 0 var(--space-2);
  color: var(--color-ink);
}

.cal-event-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-ink-light);
  margin-bottom: var(--space-2);
}

.cal-event-card__date,
.cal-event-card__duration {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.cal-event-card__desc {
  font-size: var(--text-sm);
  color: var(--color-ink-light);
  line-height: var(--leading-relaxed);
}

.cal-event-card__links {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-2);
  flex-wrap: wrap;
}

.cal-event-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--theme-primary);
  text-decoration: none;
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--color-primary-200);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.cal-event-card__link:hover {
  background: color-mix(in srgb, var(--theme-primary) 8%, var(--color-component-surface));
  border-color: var(--color-primary-300);
  text-decoration: none;
}

/* ==========================================================================
   Popover - Apple-style popover / Bootstrap modal hybrid
   ========================================================================== */

/* Backdrop */
.popover-backdrop {
  position: fixed;
  inset: 0;
  background: rgb(0 0 0 / 0.35);
  z-index: 1400;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.popover-backdrop--visible {
  opacity: 1;
  pointer-events: auto;
}

/* Popover container */
.popover {
  position: fixed;
  z-index: 1500;
  width: min(28rem, calc(100vw - var(--space-8)));
  max-height: calc(100vh - var(--space-8));
  background: var(--color-component-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgb(0 0 0 / 0.03);
  overflow: hidden;
  display: flex;
  flex-direction: column;

  opacity: 0;
  transform: scale(0.95) translateY(4px);
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.popover--visible {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: auto;
}

/* Arrow (points toward the trigger) */
.popover__arrow {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--color-component-surface);
  border: 1px solid var(--color-border);
  transform: rotate(45deg);
  z-index: -1;
}

.popover__arrow--top {
  top: -7px;
  border-right: none;
  border-bottom: none;
}

.popover__arrow--bottom {
  bottom: -7px;
  border-left: none;
  border-top: none;
}

/* Header */
.popover__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.popover__title {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  text-transform: none;
  color: var(--color-ink);
  margin: 0;
  line-height: var(--leading-tight);
}

.popover__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-ink-light);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.popover__close:hover {
  background: var(--color-hover-surface);
  color: var(--color-ink);
}

.popover__close svg {
  width: 1rem;
  height: 1rem;
}

/* Body */
.popover__body {
  padding: var(--space-5);
  overflow-y: auto;
  flex: 1;
}

/* Footer */
.popover__footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-tinted-surface);
  flex-shrink: 0;
}

/* Popover event detail layout */
.popover-event-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.popover-event-links {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 768px) {
  .cal-page {
    padding: var(--space-4);
  }

  .cal-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .cal-day {
    min-height: 3.5rem;
    padding: 2px;
  }

  .cal-day__number {
    width: 1.5rem;
    height: 1.5rem;
    font-size: var(--text-xs);
  }

  .cal-event-card__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }
}

/* ==========================================================================
   Date/Time Picker
   ========================================================================== */

.dtpicker {
  position: relative;
}

/* Trigger — single input-like button showing "Mar 18, 2026 at 9:00 AM" */
.dtpicker__trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  font-weight: var(--font-medium);
  color: var(--color-ink);
  background: var(--color-component-surface);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  text-align: left;
}

.dtpicker__trigger:hover {
  border-color: var(--color-primary-300);
}

.dtpicker__trigger:focus {
  outline: none;
  border-color: var(--color-primary-400);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.dtpicker__trigger svg {
  width: 1rem;
  height: 1rem;
  color: var(--color-ink-light);
  flex-shrink: 0;
}

/* Dropdown */
.dtpicker__dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  z-index: 100;
  width: 18rem;
  background: var(--color-component-surface);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3);
  display: none;
}

.dtpicker__dropdown--open {
  display: block;
}

/* Calendar header */
.dtpicker__cal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.dtpicker__month-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-ink);
}

.dtpicker__nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-ink);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--text-lg);
  line-height: 1;
}

.dtpicker__nav:hover {
  background: color-mix(in srgb, var(--theme-primary) 10%, var(--color-component-surface));
  border-color: var(--color-primary-300);
}

/* Weekday labels */
.dtpicker__weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  margin-bottom: var(--space-1);
}

.dtpicker__weekdays span {
  text-align: center;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-ink-light);
  padding: var(--space-1) 0;
}

/* Day grid */
.dtpicker__days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.dtpicker__day {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin: 0 auto;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dtpicker__day:hover {
  background: color-mix(in srgb, var(--theme-primary) 12%, var(--color-component-surface));
}

.dtpicker__day--other {
  color: var(--color-ink-lighter);
}

.dtpicker__day--today {
  font-weight: var(--font-bold);
  background: color-mix(in srgb, var(--theme-primary) 10%, var(--color-component-surface));
  color: var(--theme-primary);
}

.dtpicker__day--selected {
  background: var(--theme-primary);
  color: var(--color-white);
  font-weight: var(--font-semibold);
}

.dtpicker__day--selected:hover {
  background: color-mix(in srgb, var(--theme-primary) 85%, black);
}

.dtpicker__day--today.dtpicker__day--selected {
  background: var(--theme-primary);
  color: var(--color-white);
}

/* Time bar — sits below calendar inside dropdown */
.dtpicker__time-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.dtpicker__time-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-ink-light);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.dtpicker__time-bar select {
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  min-height: auto;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  background: var(--color-component-surface);
  color: var(--color-ink);
}

.dtpicker__time-sep {
  font-weight: var(--font-semibold);
  color: var(--color-ink-light);
  line-height: 1;
}

/* =========================================================
   Chat Room
   ========================================================= */

.chat-room {
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--masquerade-banner-height, 0px));
  max-height: calc(100vh - var(--masquerade-banner-height, 0px));
  overflow: hidden;
}

.chat-room__header {
  flex-shrink: 0;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-component-surface);
}

.chat-room__messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  opacity: 0;
  transition: opacity 180ms ease;
}
.chat-room__messages--ready {
  opacity: 1;
}

.chat-room__empty {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--color-ink-light);
  font-size: var(--text-sm);
  text-align: center;
  padding: var(--space-8);
}

.chat-room__empty:not(:only-child) {
  display: none;
}

.chat-room__input {
  flex-shrink: 0;
  border-top: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-4);
  background: var(--color-component-surface);
}

.chat-room__input-row {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.chat-room__input-field {
  flex: 1;
  min-height: auto;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}

/* Chat Message */

.chat-message {
  display: flex;
  gap: var(--space-2);
  align-items: flex-end;
  padding: var(--space-1) var(--space-4);
}

.chat-message__avatar {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--color-primary-600);
  color: white;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-1);
}

.chat-message__content {
  max-width: 68%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.chat-message__meta {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}

.chat-message__author {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-ink);
}

.chat-message__time {
  font-size: var(--text-xs);
  color: var(--color-ink-light);
}

.chat-message__body {
  background: var(--color-border);
  padding: var(--space-2) var(--space-3);
  border-radius: 1.1rem;
  border-bottom-left-radius: 0.25rem;
  font-size: var(--text-sm);
  color: var(--color-ink);
  word-break: break-word;
  white-space: pre-wrap;
  line-height: 1.45;
}

/* Meta variants — theirs visible by default, mine hidden */
.chat-message__meta--mine {
  display: none;
}

/* Mine — right-aligned bubble */
.chat-message--mine {
  flex-direction: row-reverse;
}

.chat-message--mine .chat-message__avatar-slot {
  display: none;
}

.chat-message--mine .chat-message__meta--theirs {
  display: none;
}

.chat-message--mine .chat-message__meta--mine {
  display: flex;
}

.chat-message--mine .chat-message__content {
  align-items: flex-end;
}

.chat-message--mine .chat-message__meta {
  flex-direction: row-reverse;
  margin-bottom: 0;
  margin-top: var(--space-1);
}

.chat-message--mine .chat-message__body {
  background: var(--color-primary-600);
  color: white;
  border-radius: 1.1rem;
  border-bottom-right-radius: 0.25rem;
}

.chat-message--mine .chat-message__body a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: underline;
}

/* Avatar image (when user has uploaded a photo) */
.chat-message__avatar--img {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin-bottom: var(--space-1);
}

/* Link preview card */
.link-preview {
  display: flex;
  flex-direction: column;
  margin-top: var(--space-2);
  max-width: 280px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  background: var(--color-component-surface);
  transition: box-shadow var(--transition-fast);
}

.link-preview:hover {
  box-shadow: var(--shadow-sm);
}

.link-preview__image {
  width: 100%;
  max-height: 140px;
  overflow: hidden;
  background: var(--color-border);
}

.link-preview__image img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
}

.link-preview__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
}

.link-preview__domain {
  font-size: var(--text-xs);
  color: var(--color-ink-light);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.link-preview__title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-ink);
  line-height: 1.3;
}

.link-preview__desc {
  font-size: var(--text-xs);
  color: var(--color-ink-light);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Mine messages: link preview card uses muted colors */
.chat-message--mine .link-preview {
  border-color: color-mix(in srgb, white 20%, var(--color-primary-600));
  background: color-mix(in srgb, white 15%, var(--color-primary-600));
}

.chat-message--mine .link-preview__domain,
.chat-message--mine .link-preview__title,
.chat-message--mine .link-preview__desc {
  color: rgba(255, 255, 255, 0.9);
}

.chat-message--mine .link-preview__domain {
  color: rgba(255, 255, 255, 0.7);
}

/* Settings avatar row */
.settings-avatar-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.settings-avatar-preview {
  flex-shrink: 0;
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-primary-100);
}

.settings-avatar-preview__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.settings-avatar-preview__initials {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--color-primary-700);
}

.settings-avatar-actions {
  flex: 1;
  min-width: 0;
}

/* Sidebar settings link pinned to bottom */
.sidebar__group--bottom {
  margin-top: auto;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}

/* ── Chat: submit progress bar ───────────────────────────────── */
.chat-room__progress-bar {
  height: 3px;
  background: transparent;
  flex-shrink: 0;
}
.chat-room__progress-bar--active {
  background: linear-gradient(
    90deg,
    var(--color-border) 0%,
    var(--brand-primary, var(--color-accent)) 40%,
    var(--color-border) 100%
  );
  background-size: 200% 100%;
  animation: chat-progress-shimmer 1.3s ease-in-out infinite;
}
@keyframes chat-progress-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Chat: file preview strip ─────────────────────────────────── */
.chat-room__file-previews {
  display: none;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
}
.chat-room__file-previews--visible { display: flex; }

.file-preview-thumb {
  position: relative;
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-tinted-surface);
}
.file-preview-thumb img,
.file-preview-thumb video { width: 100%; height: 100%; object-fit: cover; }

.file-preview-thumb__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgb(0 0 0 / 0.35);
  color: white;
}
.file-preview-thumb__play svg { width: 1.25rem; height: 1.25rem; }

/* ── Chat: attach button ──────────────────────────────────────── */
.chat-room__attach-btn {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  color: var(--color-ink-light);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
}
.chat-room__attach-btn:hover { background: var(--color-hover-surface); color: var(--color-ink); }
.chat-room__attach-btn svg { width: 1.25rem; height: 1.25rem; }

/* ── Chat: inline attachment thumbnails ──────────────────────── */
.message-attachments {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: var(--space-1);
  overflow: hidden;
  border-radius: 1rem;
  max-width: 280px;
}
.message-attachments--grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.message-attachment {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--color-tinted-surface);
  aspect-ratio: 4 / 3;
}
.message-attachment__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity var(--transition-fast);
}
.message-attachment:hover .message-attachment__img { opacity: 0.9; }

.message-attachment__video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}
.message-attachment__play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgb(0 0 0 / 0.25);
  color: white;
  transition: background var(--transition-fast);
}
.message-attachment--video:hover .message-attachment__play-btn { background: rgb(0 0 0 / 0.4); }
.message-attachment__play-btn svg { filter: drop-shadow(0 1px 3px rgb(0 0 0 / 0.5)); }

/* ── Media viewer lightbox ────────────────────────────────────── */
.media-viewer {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}
.media-viewer--open { opacity: 1; pointer-events: auto; }

.media-viewer__backdrop {
  position: absolute;
  inset: 0;
  background: rgb(0 0 0 / 0.85);
}
.media-viewer__shell {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: min(90vw, 1200px);
  max-height: 90vh;
}
.media-viewer__toolbar {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
}
.media-viewer__download { text-decoration: none; }
.media-viewer__stage {
  display: flex;
  align-items: center;
  justify-content: center;
}
.media-viewer__img {
  max-width: 100%;
  max-height: calc(90vh - 5rem);
  border-radius: var(--radius-lg);
  object-fit: contain;
  display: block;
}
.media-viewer__video {
  max-width: 100%;
  max-height: calc(90vh - 5rem);
  border-radius: var(--radius-lg);
}

/* ── Chat: react button ───────────────────────────────────────── */
.chat-message__actions {
  position: relative;
  flex-shrink: 0;
  align-self: center;
  display: flex;
  align-items: center;
}
.chat-message__react-btn {
  display: flex;
  flex-shrink: 0;
  align-self: center;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  min-width: 1.5rem;
  height: 1.5rem;
  min-height: 1.5rem;
  border-radius: 50%;
  background: transparent;
  border: 1.5px solid var(--color-border);
  color: var(--color-ink-light);
  cursor: pointer;
  opacity: 0.5;
  padding: 0;
  transition: opacity var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}
.chat-message__react-btn:hover {
  opacity: 1;
  background: var(--color-hover-surface);
  border-color: var(--color-ink-light);
}

/* ── Emoji picker ─────────────────────────────────────────────── */
.emoji-picker {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-1));
  right: 0;
  z-index: 200;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 20px rgb(0 0 0 / 0.12);
  padding: var(--space-2);
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  max-width: min(320px, 90vw);
  scrollbar-width: none;
}
.emoji-picker::-webkit-scrollbar { display: none; }
.emoji-picker--open { display: flex; gap: 2px; }
/* "mine" messages are row-reversed — flip the picker so it opens left */
.chat-message--mine .emoji-picker {
  right: auto;
  left: 0;
}
/* "theirs" messages — picker opens to the right of the button */
.chat-message:not(.chat-message--mine) .emoji-picker {
  left: 0;
  right: auto;
}
.emoji-picker__emoji {
  flex-shrink: 0;
  font-size: 1.375rem;
  line-height: 1;
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.emoji-picker__emoji:hover {
  background: var(--color-hover-surface);
  transform: scale(1.2);
}

/* ── Reaction badges on messages ─────────────────────────────── */
.message-reactions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-1);
  min-height: 0;
}
.reaction-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px 2px 6px;
  border-radius: 9999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  user-select: none;
}
/* not-mine hover → green tint (will ADD) */
.reaction-badge:not(.reaction-badge--mine):hover {
  background: color-mix(in srgb, #22c55e 15%, transparent);
  border-color: #22c55e;
}
.reaction-badge--mine {
  background: color-mix(in srgb, var(--brand-primary, var(--color-accent)) 12%, transparent);
  border-color: var(--brand-primary, var(--color-accent));
}
/* mine hover → red tint (will REMOVE) */
.reaction-badge--mine:hover {
  background: color-mix(in srgb, #ef4444 15%, transparent);
  border-color: #ef4444;
}
.reaction-badge__emoji { font-size: 0.9375rem; line-height: 1; }
.reaction-badge__count { color: var(--color-ink-light); font-size: 0.75rem; }