h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

body {
    font-family: 'Vazirmatn', 'Segoe UI', sans-serif;
}

.app-bar-gradient {
    background: linear-gradient(120deg, #4B3FCF 0%, #6C5CE7 55%, #00B8A9 130%) !important;
    box-shadow: 0 4px 20px rgba(75, 63, 207, .25) !important;
}

.app-logo-badge {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(255, 255, 255, .18);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 10px;
    backdrop-filter: blur(4px);
}

.user-chip-avatar {
    background: rgba(255, 255, 255, .22) !important;
    color: #fff !important;
    font-weight: 700;
}

.app-main-bg {
    background:
        radial-gradient(1200px 400px at 15% -10%, rgba(75, 63, 207, .07), transparent),
        radial-gradient(900px 400px at 100% 0%, rgba(0, 184, 169, .07), transparent),
        #F3F4FC;
    min-height: 100vh;
}

/* Sidebar "card" used by each role layout's nav menu — see HostLayout/AdminLayout/
   SuperAdminLayout/StudentLayout.razor. Sits alongside @Body in a MudGrid (MainLayout
   itself can't host a real MudDrawer here since the whole shell is static — see its
   own comment), styled to read as a proper app sidebar rather than a plain column. */
.app-sidebar {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(31, 30, 74, .06);
    padding: 12px;
    position: sticky;
    top: 88px;
}

.app-sidebar .mud-nav-link {
    border-radius: 10px;
    margin-bottom: 4px;
    transition: background-color .15s ease, color .15s ease;
}

.app-sidebar .mud-nav-link.active {
    background: linear-gradient(120deg, #4B3FCF, #6C5CE7);
    color: #fff !important;
}

.app-sidebar .mud-nav-link.active .mud-icon-root {
    color: #fff !important;
}

.app-sidebar .mud-nav-link:not(.active):hover {
    background: #F0EFFC;
}

/* Gradient stat cards — see Shared/StatCard.razor. Each Color maps to a distinct
   gradient so a row of cards reads as a coherent palette, not flat single-tone icons. */
.stat-card {
    border-radius: 16px;
    border: 1px solid rgba(31, 30, 74, .06);
    box-shadow: 0 6px 20px rgba(31, 30, 74, .05);
    transition: transform .15s ease, box-shadow .15s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(31, 30, 74, .10);
}

.stat-card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.stat-card-icon.mud-primary { background: linear-gradient(135deg, #4B3FCF, #6C5CE7); }
.stat-card-icon.mud-secondary { background: linear-gradient(135deg, #00B8A9, #06D6A0); }
.stat-card-icon.mud-tertiary { background: linear-gradient(135deg, #FF7F50, #FFA36C); }
.stat-card-icon.mud-success { background: linear-gradient(135deg, #2ECC71, #58D68D); }
.stat-card-icon.mud-warning { background: linear-gradient(135deg, #F5A623, #FBC02D); }
.stat-card-icon.mud-error { background: linear-gradient(135deg, #E74C3C, #FF7B7B); }
.stat-card-icon.mud-default { background: linear-gradient(135deg, #8A8FA3, #B0B4C4); }

/* Page header banner — see Shared/PageHeader.razor. */
.page-header {
    border-radius: 18px;
    padding: 22px 26px;
    background: linear-gradient(120deg, #EDEBFC 0%, #E4F8F6 100%);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.page-header-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, #4B3FCF, #00B8A9);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Rounded, softly-elevated tables/cards app-wide for a less "boxy" default look. */
.mud-table-container {
    border-radius: 14px !important;
}

.mud-paper {
    border-radius: 14px;
}

/* Live classroom video grid — populated by wwwroot/js/livekitRoom.js, never by
   Blazor's own rendering, so these rules target plain DOM/class selectors. */
#video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
    padding: 12px;
    background: #202124;
    border-radius: 8px;
    min-height: 320px;
}

.lk-tile {
    position: relative;
    background: #000;
    border-radius: 6px;
    overflow: hidden;
    aspect-ratio: 16 / 9;
}

.lk-tile-media {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lk-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lk-audio {
    display: none;
}

.lk-tile-label {
    position: absolute;
    left: 0;
    bottom: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 4px 8px;
    background: linear-gradient(transparent, rgba(0,0,0,.65));
    color: #fff;
    font-size: .8rem;
}

.lk-tile-hand {
    font-size: 1rem;
}

/* ---------------------------------------------------------------------------
   "Nebula Glass" room theme — a dark, immersive workspace ("room-stage") that
   frames the floating toolbar ("control-dock") and pod canvas together, so
   glassmorphism actually reads as glass: real blur, real depth, a living
   backdrop showing through every panel, instead of a light card that merely
   borrows an accent color. Each pod still carries a data-accent (violet/teal/
   rose/blue/amber/green/indigo/sky/orange) driving its icon chip, top bar and
   neon hover-glow via --pod-a/--pod-b. --------------------------------------- */
.room-stage {
    position: relative;
    padding: 18px;
    border-radius: 32px;
    overflow: hidden;
    background:
        radial-gradient(900px 560px at 6% -10%, rgba(139, 92, 246, .38), transparent 60%),
        radial-gradient(760px 520px at 100% 0%, rgba(20, 184, 166, .32), transparent 60%),
        radial-gradient(820px 560px at 45% 110%, rgba(244, 63, 94, .26), transparent 60%),
        radial-gradient(700px 480px at 85% 65%, rgba(249, 115, 22, .20), transparent 60%),
        linear-gradient(160deg, #17162E 0%, #0B0A1C 100%);
    background-size: 180% 180%, 180% 180%, 180% 180%, 180% 180%, 100% 100%;
    animation: aurora-drift 26s ease-in-out infinite alternate;
    box-shadow: 0 24px 70px rgba(0, 0, 0, .35), inset 0 1px 0 rgba(255, 255, 255, .04);
}

@keyframes aurora-drift {
    0%   { background-position: 0% 0%, 100% 0%, 50% 100%, 90% 60%, 0 0; }
    100% { background-position: 16% 12%, 84% 16%, 38% 92%, 72% 48%, 0 0; }
}

.room-stage::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    background-image: radial-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px);
    background-size: 24px 24px;
    pointer-events: none;
}

.pod-canvas {
    position: relative;
    z-index: 1;
    width: 100%;
    min-height: 640px;
    overflow: auto;
}

.pod[data-accent="violet"] { --pod-a: #8B5CF6; --pod-b: #C4B5FD; }
.pod[data-accent="teal"]   { --pod-a: #14B8A6; --pod-b: #5EEAD4; }
.pod[data-accent="rose"]   { --pod-a: #F43F5E; --pod-b: #FDA4AF; }
.pod[data-accent="blue"]   { --pod-a: #3B82F6; --pod-b: #93C5FD; }
.pod[data-accent="amber"]  { --pod-a: #F59E0B; --pod-b: #FCD34D; }
.pod[data-accent="green"]  { --pod-a: #10B981; --pod-b: #6EE7B7; }
.pod[data-accent="indigo"] { --pod-a: #6366F1; --pod-b: #A5B4FC; }
.pod[data-accent="sky"]    { --pod-a: #0EA5E9; --pod-b: #7DD3FC; }
.pod[data-accent="orange"] { --pod-a: #F97316; --pod-b: #FDBA74; }

.pod {
    position: absolute;
    z-index: 1;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, .07);
    backdrop-filter: blur(26px) saturate(160%);
    -webkit-backdrop-filter: blur(26px) saturate(160%);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 20px;
    box-shadow: 0 10px 34px rgba(0, 0, 0, .45), inset 0 1px 0 rgba(255, 255, 255, .12), 0 0 46px -18px var(--pod-a);
    overflow: hidden;
    min-width: 240px;
    min-height: 160px;
    transition: box-shadow .25s ease, transform .15s ease;
    animation: pod-in .3s ease both;
}

@keyframes pod-in {
    from { opacity: 0; transform: translateY(6px) scale(.98); }
    to   { opacity: 1; transform: none; }
}

.pod:hover {
    box-shadow: 0 16px 44px rgba(0, 0, 0, .5), inset 0 1px 0 rgba(255, 255, 255, .16), 0 0 60px -14px var(--pod-a);
}

.pod-accent-bar {
    height: 3px;
    flex-shrink: 0;
    background: linear-gradient(90deg, var(--pod-a), var(--pod-b));
    box-shadow: 0 0 12px 0 var(--pod-a);
}

.pod-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 12px;
    cursor: move;
    user-select: none;
    flex-shrink: 0;
    border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.pod-icon-chip {
    width: 28px;
    height: 28px;
    border-radius: 9px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--pod-a), var(--pod-b));
    color: #fff;
    box-shadow: 0 4px 14px -2px var(--pod-a), inset 0 1px 0 rgba(255, 255, 255, .3);
}

.pod-title {
    font-size: .85rem;
    font-weight: 700;
    color: #F4F4FF;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pod-drag-grip {
    color: rgba(255, 255, 255, .3);
    font-size: .8rem;
    letter-spacing: 1px;
}

.pod-header-spacer {
    flex: 1 1 auto;
}

.pod-btn {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, .55);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    transition: background-color .15s ease, color .15s ease;
}

.pod-collapse {
    font-size: .75rem;
}

.pod-btn:hover {
    background: color-mix(in srgb, var(--pod-a) 30%, transparent);
    color: #fff;
}

/* Collapsed pod: only the header remains — the body/resize-handle are simply not
   rendered (see Pod.razor), and this override drops the container's own inline
   height (whatever it was expanded to) down to just that header's height. */
.pod.pod-collapsed {
    height: auto !important;
    min-height: 0;
    box-shadow: 0 6px 20px rgba(0, 0, 0, .4);
}

.pod-body {
    flex: 1 1 auto;
    overflow: auto;
    padding: 10px 12px;
    min-height: 0;
    color: #E7E7F5;
    scrollbar-width: thin;
    scrollbar-color: var(--pod-a) transparent;
}

.pod-body, .pod-body .mud-typography, .pod-body p, .pod-body span, .pod-body strong {
    color: #E7E7F5;
}

.pod-body .mud-secondary-text, .pod-body .mud-typography-caption {
    color: #9A9BC0 !important;
}

.pod-body a, .pod-body .mud-link {
    color: #C4B5FD !important;
}

.pod-body .mud-input-outlined-border {
    border-color: rgba(255, 255, 255, .22) !important;
}

.pod-body .mud-input:hover .mud-input-outlined-border, .pod-body .mud-input-outlined-border:hover {
    border-color: rgba(255, 255, 255, .4) !important;
}

.pod-body .mud-input-outlined {
    background: rgba(255, 255, 255, .04);
    border-radius: 10px;
}

.pod-body .mud-input-slot, .pod-body input, .pod-body textarea {
    color: #F2F2FA !important;
    -webkit-text-fill-color: #F2F2FA;
}

.pod-body .mud-input-label {
    color: #9A9BC0 !important;
}

.pod-body::-webkit-scrollbar {
    width: 6px;
}

.pod-body::-webkit-scrollbar-thumb {
    background: var(--pod-a);
    opacity: .4;
    border-radius: 3px;
}

.pod-resize-handle {
    position: absolute;
    /* Physical "right", not inset-inline-end: podManager.js always grows a pod
       toward larger clientX/clientY (bottom-right), regardless of document
       direction, so the handle must stay visually on that same physical
       corner — inset-inline-end flips to the LEFT under RTL, putting the
       handle on the opposite corner from the one dragging actually resizes. */
    right: 5px;
    bottom: 5px;
    width: 16px;
    height: 16px;
    cursor: nwse-resize;
    background-image: radial-gradient(circle, var(--pod-a) 1.4px, transparent 1.4px);
    background-size: 5px 5px;
    background-position: bottom right;
    opacity: .5;
}

.pod:hover .pod-resize-handle {
    opacity: .9;
}

/* Floating glass "control dock" — the room's main toolbar (see ClassRoom.razor).
   A dark pill-shaped bar rather than a boxy top toolbar, with clusters of
   circular media/host controls separated by thin dividers. */
.control-dock {
    border-radius: 999px !important;
    background: rgba(22, 20, 42, .55) !important;
    backdrop-filter: blur(22px) saturate(180%);
    -webkit-backdrop-filter: blur(22px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, .12);
    box-shadow: 0 16px 44px rgba(0, 0, 0, .35), inset 0 1px 0 rgba(255, 255, 255, .08);
    padding: 9px 18px !important;
    position: relative;
    z-index: 1;
}

.control-dock, .control-dock .mud-typography, .control-dock .mud-switch-label {
    color: #EDEDF7 !important;
}

.control-dock .mud-icon-button .mud-icon-root.mud-default-text {
    color: #EDEDF7 !important;
}

.dock-divider {
    width: 1px;
    height: 26px;
    flex-shrink: 0;
    background: rgba(255, 255, 255, .14);
    margin: 0 2px;
}

.dock-btn.mud-button-root {
    border-radius: 999px !important;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .3);
    transition: transform .15s ease, box-shadow .15s ease;
}

.dock-btn.mud-button-root:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, .4);
}

.dock-icon-btn.mud-icon-button-root {
    box-shadow: 0 4px 14px rgba(0, 0, 0, .3);
    transition: transform .15s ease, box-shadow .15s ease;
}

.dock-icon-btn.mud-icon-button-root:hover {
    transform: translateY(-2px);
}

/* Pulsing red dot next to the "recording" state — a small, unmissable heartbeat
   rather than a static icon, so a live recording actually reads as "live". */
.rec-live-dot {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #fff;
    margin-inline-end: 8px;
    animation: rec-pulse 1.2s ease-in-out infinite;
}

@keyframes rec-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: .35; transform: scale(1.5); }
}

/* Small status pills next to the theme toggle — visible proof that recording/
   streaming is live without needing to open the "more options" menu where the
   actual start/stop actions now live (see ClassRoom.razor). */
.rec-badge {
    display: flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 999px;
    background: rgba(244, 63, 94, .18);
    color: #FDA4AF;
    font-size: .72rem;
    font-weight: 700;
}

.rec-badge-live {
    background: rgba(20, 184, 166, .18);
    color: #5EEAD4;
}

.room-stage.theme-light .rec-badge {
    background: rgba(225, 29, 72, .12);
    color: #E11D48;
}

.room-stage.theme-light .rec-badge-live {
    background: rgba(13, 148, 136, .12);
    color: #0D9488;
}

/* Chat bubbles — own messages align opposite from everyone else's and pick up a
   gradient fill, instead of a flat "Name: text" line. */
.chat-bubble-row {
    display: flex;
    margin-bottom: 8px;
}

.chat-bubble-row.chat-self {
    justify-content: flex-end;
}

.chat-bubble {
    max-width: 82%;
    padding: 7px 12px;
    border-radius: 14px;
    font-size: .85rem;
    line-height: 1.5;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .25);
}

.chat-bubble .chat-bubble-name {
    display: block;
    font-size: .72rem;
    font-weight: 700;
    opacity: .8;
    margin-bottom: 2px;
}

.chat-bubble-row:not(.chat-self) .chat-bubble {
    background: rgba(255, 255, 255, .09);
    border: 1px solid rgba(255, 255, 255, .1);
    color: #F0F0FA;
    border-bottom-left-radius: 4px;
}

.chat-bubble-row.chat-self .chat-bubble {
    background: linear-gradient(135deg, #F43F5E, #FB7185);
    color: #fff;
    border-bottom-right-radius: 4px;
}

/* Participant rows — an avatar-initial chip + name/role, instead of a bare
   text line, so the list reads like a real roster. */
.participant-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 8px;
    border-radius: 12px;
    margin-bottom: 4px;
    transition: background-color .15s ease;
}

.participant-row:hover {
    background: rgba(255, 255, 255, .06);
}

.participant-avatar {
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: .8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #3B82F6, #93C5FD);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, .12), 0 4px 12px -2px #3B82F6;
}

.participant-row .participant-hand {
    font-size: .95rem;
}

/* Poll options — colorful selectable cards instead of plain outlined buttons,
   with a glowing gradient result bar once votes are visible. */
.poll-option-btn.mud-button-root {
    border-radius: 12px !important;
    justify-content: flex-start !important;
    border-color: rgba(165, 180, 252, .4) !important;
    color: #C7D2FE !important;
    background: rgba(255, 255, 255, .04) !important;
    transition: transform .15s ease, background-color .15s ease;
}

.poll-option-btn.mud-button-root:hover {
    background: rgba(99, 102, 241, .18) !important;
    transform: translateX(-2px);
}

.poll-result-card {
    border-radius: 12px;
    padding: 8px 10px;
    margin-bottom: 8px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .08);
}

.poll-result-bar {
    height: 8px;
    border-radius: 4px;
    margin-top: 6px;
    background: rgba(255, 255, 255, .1);
    overflow: hidden;
}

.poll-result-bar-fill {
    height: 100%;
    border-radius: 4px;
    background: linear-gradient(90deg, #6366F1, #A5B4FC);
    box-shadow: 0 0 10px 0 #6366F1;
    transition: width .3s ease;
}

/* Q&A cards — a glowing left accent bar marks answered (green) vs pending
   (amber) at a glance, instead of identical outlined boxes. */
.qa-card {
    border-radius: 12px;
    padding: 10px 12px;
    margin-bottom: 8px;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .08);
    border-inline-start: 3px solid #FCD34D;
}

.qa-card.qa-answered {
    border-inline-start-color: #6EE7B7;
}

/* Presentation slide viewer */
.presentation-slide {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
}

/* Container PPTXjs renders the real .pptx into (see wwwroot/js/presentationViewer.js)
   — native transitions/animations included, not a flattened image. PPTXjs sizes its
   own slide div in pixels off the source file's dimensions, so this just gives it a
   dark stage to sit on and scrolls if a slide is scaled larger than the pod. */
.presentation-viewer-stage {
    flex: 1 1 auto;
    position: relative;
    overflow: auto;
    background: #111;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ---------------------------------------------------------------------------
   Light-mode variant of the room — toggled by adding "theme-light" to
   .room-stage (see ClassRoom.razor's theme toggle button + localStorage
   persistence). Every rule below only overrides colors/backgrounds; layout,
   blur amounts, and structure stay identical to the dark theme so the two
   feel like the same app, not two different pages. --------------------- */
.room-stage.theme-light {
    background:
        radial-gradient(900px 560px at 6% -10%, rgba(124, 58, 237, .14), transparent 60%),
        radial-gradient(760px 520px at 100% 0%, rgba(20, 184, 166, .13), transparent 60%),
        radial-gradient(820px 560px at 45% 110%, rgba(244, 63, 94, .10), transparent 60%),
        radial-gradient(700px 480px at 85% 65%, rgba(249, 115, 22, .08), transparent 60%),
        linear-gradient(160deg, #F6F5FD 0%, #EEEDFB 100%);
    box-shadow: 0 24px 70px rgba(31, 30, 74, .12), inset 0 1px 0 rgba(255, 255, 255, .5);
}

.room-stage.theme-light::before {
    background-image: radial-gradient(rgba(31, 30, 74, .07) 1px, transparent 1px);
}

.room-stage.theme-light .pod {
    background: rgba(255, 255, 255, .78);
    border-color: rgba(255, 255, 255, .65);
    box-shadow: 0 10px 30px rgba(31, 30, 74, .12), inset 0 1px 0 rgba(255, 255, 255, .6), 0 0 40px -20px var(--pod-a);
}

.room-stage.theme-light .pod:hover {
    box-shadow: 0 16px 40px rgba(31, 30, 74, .16), inset 0 1px 0 rgba(255, 255, 255, .7), 0 0 50px -16px var(--pod-a);
}

.room-stage.theme-light .pod.pod-collapsed {
    box-shadow: 0 6px 18px rgba(31, 30, 74, .10);
}

.room-stage.theme-light .pod-header {
    border-bottom-color: rgba(31, 30, 74, .06);
}

.room-stage.theme-light .pod-title {
    color: #1F1E4A;
}

.room-stage.theme-light .pod-drag-grip {
    color: #C7C9DD;
}

.room-stage.theme-light .pod-btn {
    color: #8A8FA3;
}

.room-stage.theme-light .pod-btn:hover {
    color: var(--pod-a);
    background: color-mix(in srgb, var(--pod-a) 16%, transparent);
}

.room-stage.theme-light .pod-body,
.room-stage.theme-light .pod-body .mud-typography,
.room-stage.theme-light .pod-body p,
.room-stage.theme-light .pod-body span,
.room-stage.theme-light .pod-body strong {
    color: #332F63;
}

.room-stage.theme-light .pod-body .mud-secondary-text,
.room-stage.theme-light .pod-body .mud-typography-caption {
    color: #8A8FA3 !important;
}

.room-stage.theme-light .pod-body a, .room-stage.theme-light .pod-body .mud-link {
    color: #6D28D9 !important;
}

.room-stage.theme-light .pod-body .mud-input-outlined-border {
    border-color: rgba(31, 30, 74, .18) !important;
}

.room-stage.theme-light .pod-body .mud-input-outlined {
    background: rgba(255, 255, 255, .6);
}

.room-stage.theme-light .pod-body .mud-input-slot,
.room-stage.theme-light .pod-body input,
.room-stage.theme-light .pod-body textarea {
    color: #1F1E4A !important;
    -webkit-text-fill-color: #1F1E4A;
}

.room-stage.theme-light .pod-body .mud-input-label {
    color: #8A8FA3 !important;
}

.room-stage.theme-light .control-dock {
    background: rgba(255, 255, 255, .78) !important;
    border-color: rgba(255, 255, 255, .6);
    box-shadow: 0 10px 30px rgba(31, 30, 74, .12);
}

.room-stage.theme-light .control-dock,
.room-stage.theme-light .control-dock .mud-typography,
.room-stage.theme-light .control-dock .mud-switch-label {
    color: #332F63 !important;
}

.room-stage.theme-light .dock-divider {
    background: rgba(31, 30, 74, .12);
}

.room-stage.theme-light .chat-bubble-row:not(.chat-self) .chat-bubble {
    background: rgba(124, 58, 237, .10);
    border-color: transparent;
    color: #1F1E4A;
}

.room-stage.theme-light .participant-row:hover {
    background: rgba(37, 99, 235, .07);
}

.room-stage.theme-light .poll-option-btn.mud-button-root {
    background: rgba(255, 255, 255, .5) !important;
    color: #4F46E5 !important;
    border-color: rgba(79, 70, 229, .35) !important;
}

.room-stage.theme-light .poll-result-card {
    background: rgba(79, 70, 229, .06);
    border-color: transparent;
}

.room-stage.theme-light .poll-result-bar {
    background: rgba(79, 70, 229, .12);
}

.room-stage.theme-light .qa-card {
    background: rgba(255, 255, 255, .65);
    border-color: transparent;
}
.impersonation-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 8px 16px;
    background: #b3261e;
    color: #fff;
    font-size: .9rem;
    font-weight: 600;
}

.impersonation-banner form { margin-inline-start: auto; }

.impersonation-exit {
    background: rgba(255, 255, 255, .18);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .5);
    border-radius: 8px;
    padding: 4px 12px;
    cursor: pointer;
    font: inherit;
}

/* Global loader (BusyIndicator.razor + busy.js) */
.busy-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 2100;
    pointer-events: none;
}

.busy-overlay {
    position: fixed;
    inset: 0;
    z-index: 1300; /* below MudBlazor dialogs (1400) so dialogs keep their own in-dialog loader */
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, .35);
    backdrop-filter: blur(1px);
    cursor: progress;
}

.busy-spinner {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 5px solid rgba(75, 63, 207, .2);
    border-top-color: #4B3FCF;
    animation: busy-spin .8s linear infinite;
}

@keyframes busy-spin { to { transform: rotate(360deg); } }

.dialog-busy-slot {
    height: 4px;
    margin: -8px -8px 8px;
}

.dialog-busy {
    animation: dialog-busy-in 0s .15s forwards;
    opacity: 0;
}

@keyframes dialog-busy-in { to { opacity: 1; } }

.busy-link { pointer-events: none; opacity: .75; }

.busy-link-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-inline-end: 8px;
    vertical-align: -2px;
    border-radius: 50%;
    border: 2px solid currentColor;
    border-top-color: transparent;
    animation: busy-spin .7s linear infinite;
}

/* Panel content placeholder until the page renders (PageBoot.razor) */
.page-boot {
    display: grid;
    place-items: center;
    min-height: 240px;
}

/* The page's own content is inserted as the next element sibling once it renders. */
.page-boot:has(+ *) { display: none; }

.busy-toast {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2200;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    border-radius: 999px;
    background: #4B3FCF;
    color: #fff;
    font-weight: 600;
    box-shadow: 0 6px 24px rgba(75, 63, 207, .35);
    pointer-events: none;
}

.busy-toast .busy-link-spinner { margin: 0; }