/* wallpaper layer */
.app-layout {
    position: relative;
    isolation: isolate;
    overflow: hidden;
}

.main-area {
    position: relative;
    overflow: hidden;
    background: transparent !important;
}

.app-layout > .app-wallpaper {
    --chat-wallpaper-dim: 0.16;
    --chat-wallpaper-blur: 0px;
    --chat-doodle-opacity: 0.12;
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
    opacity: 0;
    contain: strict;
    transition: opacity 380ms var(--ease, ease);
}

.app-layout > .app-wallpaper.has-wallpaper {
    opacity: 1;
}

.chat-wallpaper-surface {
    position: absolute;
    inset: -12px;
    background-image: var(--wallpaper-image, none);
    background-position: center;
    background-size: var(--wallpaper-size, cover);
    background-repeat: var(--wallpaper-repeat, no-repeat);
    filter: blur(var(--chat-wallpaper-blur));
    transform: scale(1.025);
    opacity: 1;
    will-change: opacity;
    transition: opacity 420ms var(--ease, ease);
}

.chat-wallpaper-surface.chat-wallpaper-outgoing {
    z-index: 1;
}

.chat-wallpaper-surface.is-entering,
.chat-wallpaper-surface.chat-wallpaper-outgoing.is-leaving {
    opacity: 0;
}

.chat-wallpaper-doodles {
    position: absolute;
    inset: -26px;
    z-index: 2;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(218, 208, 255, 0.78));
    -webkit-mask-image: url("/web/img/doodle-pattern.svg");
    mask-image: url("/web/img/doodle-pattern.svg");
    -webkit-mask-position: 12px 4px;
    mask-position: 12px 4px;
    -webkit-mask-repeat: repeat;
    mask-repeat: repeat;
    -webkit-mask-size: 330px 330px;
    mask-size: 330px 330px;
    opacity: var(--chat-doodle-opacity);
    mix-blend-mode: screen;
    filter: drop-shadow(0 1px 1px rgba(2, 5, 14, 0.2));
    transform: rotate(-1.25deg) scale(1.035);
    transform-origin: center;
    transition: opacity 240ms ease;
    will-change: opacity;
}

.app-wallpaper.doodles-off .chat-wallpaper-doodles {
    opacity: 0;
}

.chat-wallpaper-shade {
    position: absolute;
    inset: 0;
    z-index: 3;
    background: rgba(2, 5, 14, var(--chat-wallpaper-dim));
}

[data-theme="light"] .chat-wallpaper-shade {
    background: rgba(255, 255, 255, var(--chat-wallpaper-dim));
}

[data-theme="light"] .chat-wallpaper-doodles {
    background: linear-gradient(135deg, rgba(41, 38, 68, 0.9), rgba(82, 65, 135, 0.72));
    mix-blend-mode: multiply;
    filter: none;
}

.app-layout > .modern-sidebar,
.app-layout > .main-area {
    position: relative;
    z-index: 1;
}

/* Global wallpaper gallery */
.global-bg-gallery {
    display: grid !important;
    grid-template-columns: repeat(auto-fill, minmax(108px, 1fr)) !important;
    gap: 12px !important;
    width: 100%;
}

.global-bg-gallery .chat-bg-option {
    appearance: none;
    width: 100% !important;
    min-width: 0;
    min-height: 92px !important;
    aspect-ratio: 1.18 / 1;
    border-radius: 19px !important;
    border: 1px solid rgba(255, 255, 255, 0.09) !important;
    color: #fff;
    font: inherit;
    overflow: hidden;
    cursor: pointer;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 8px 24px rgba(0, 0, 0, 0.16);
    transition: transform 220ms var(--spring, ease), border-color 220ms ease, box-shadow 220ms ease;
}

.global-bg-gallery .chat-bg-option:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.25) !important;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16), 0 13px 30px rgba(0, 0, 0, 0.24);
}

.global-bg-gallery .chat-bg-option.active {
    border-color: var(--primary, #8b7cf6) !important;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary, #8b7cf6) 22%, transparent), 0 14px 34px rgba(0, 0, 0, 0.24) !important;
}

.global-bg-gallery .chat-bg-option.is-loading {
    pointer-events: none;
    opacity: 0.65;
}

.global-bg-gallery .chat-bg-option.is-loading::after {
    content: "";
    position: absolute;
    width: 22px;
    height: 22px;
    border: 2px solid rgba(255, 255, 255, 0.28);
    border-top-color: #fff;
    border-radius: 50%;
    animation: wallpaper-spin 700ms linear infinite;
}

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

.global-bg-gallery .chat-bg-option-label {
    max-width: calc(100% - 12px);
    padding: 4px 8px !important;
    border-radius: 999px;
    background: rgba(5, 8, 18, 0.52);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    color: rgba(255, 255, 255, 0.92) !important;
    font-size: 0.64rem !important;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.global-bg-gallery .bg-reset,
.global-bg-gallery .bg-custom {
    background: linear-gradient(145deg, rgba(139, 124, 246, 0.12), rgba(255, 255, 255, 0.035)) !important;
}

[data-theme="light"] .global-bg-gallery .chat-bg-option {
    border-color: rgba(15, 23, 42, 0.09) !important;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 8px 22px rgba(30, 41, 59, 0.09);
}

.background-tuning {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: 16px;
    width: 100%;
}

.background-tuning-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 9px 12px;
    align-items: center;
    min-width: 0;
    padding: 13px 14px;
    border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.07));
    border-radius: 17px;
    background: color-mix(in srgb, var(--bg-surface, #151827) 78%, transparent);
}

.background-tuning-row > span {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    font-size: 0.77rem;
    font-weight: 700;
    color: var(--text-primary, var(--text));
}

.background-tuning-row > span i {
    color: var(--primary, #8b7cf6);
}

.background-tuning-row output {
    font-size: 0.68rem;
    font-variant-numeric: tabular-nums;
    color: var(--text-muted);
}

.background-tuning-row input[type="range"] {
    grid-column: 1 / -1;
    width: 100%;
    accent-color: var(--primary, #8b7cf6);
}

.background-doodle-card {
    grid-column: 1 / -1;
    overflow: hidden;
    border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.07));
    border-radius: 19px;
    background:
        linear-gradient(135deg, rgba(139, 124, 246, 0.095), transparent 58%),
        color-mix(in srgb, var(--bg-surface, #151827) 80%, transparent);
    transition: border-color 180ms ease, background 180ms ease, opacity 180ms ease;
}

.background-doodle-card.is-off {
    opacity: 0.62;
}

.background-doodle-toggle {
    display: grid;
    width: 100%;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 11px;
    align-items: center;
    padding: 13px 14px;
    border: 0;
    background: transparent;
    color: var(--text-primary, var(--text));
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.background-doodle-icon {
    display: grid;
    width: 36px;
    height: 36px;
    place-items: center;
    border: 1px solid rgba(170, 149, 255, 0.2);
    border-radius: 12px;
    background: linear-gradient(145deg, rgba(156, 128, 255, 0.22), rgba(99, 102, 241, 0.09));
    color: #b6a4ff;
}

.background-doodle-copy {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 2px;
}

.background-doodle-copy strong {
    font-size: 0.78rem;
    font-weight: 760;
}

.background-doodle-copy small {
    color: var(--text-muted);
    font-size: 0.65rem;
    line-height: 1.35;
}

.background-doodle-switch {
    position: relative;
    width: 42px;
    height: 24px;
    flex: 0 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.085);
    transition: background 180ms ease, border-color 180ms ease;
}

.background-doodle-switch i {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.84);
    box-shadow: 0 2px 7px rgba(0, 0, 0, 0.25);
    transition: transform 220ms var(--spring, ease), background 180ms ease;
}

.background-doodle-toggle[aria-pressed="true"] .background-doodle-switch {
    border-color: rgba(156, 128, 255, 0.5);
    background: linear-gradient(135deg, #9b7df7, #6958dd);
}

.background-doodle-toggle[aria-pressed="true"] .background-doodle-switch i {
    transform: translateX(18px);
    background: #fff;
}

.background-doodle-intensity {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 7px 12px;
    padding: 10px 14px 13px;
    border-top: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.06));
    color: var(--text-muted);
    font-size: 0.67rem;
}

.background-doodle-intensity output {
    font-variant-numeric: tabular-nums;
}

.background-doodle-intensity input {
    grid-column: 1 / -1;
    width: 100%;
    accent-color: var(--primary, #8b7cf6);
}

.background-doodle-card.is-off .background-doodle-intensity {
    pointer-events: none;
    opacity: 0.38;
}

/* iOS-inspired wallpaper picker. All required styles live in this file so the
   modal never depends on a runtime <style> injection. */
.bg-picker-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    opacity: 0;
    pointer-events: none;
    transition: opacity 300ms ease;
}

.bg-picker-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.bg-picker-modal {
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-sizing: border-box;
    transform: translateY(24px) scale(0.94);
    opacity: 0;
    transition: transform 440ms cubic-bezier(0.16, 1, 0.3, 1), opacity 280ms ease;
}

.bg-picker-overlay.open .bg-picker-modal {
    transform: none;
    opacity: 1;
}

.bg-picker-glow {
    position: absolute;
    z-index: 0;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.46;
    pointer-events: none;
}

.bg-picker-glow-1 {
    top: -180px;
    left: -100px;
    background: rgba(139, 92, 246, 0.42);
}

.bg-picker-glow-2 {
    right: -120px;
    bottom: -190px;
    background: rgba(34, 211, 238, 0.25);
}

.bg-picker-head,
.bg-picker-body,
.bg-picker-foot {
    position: relative;
    z-index: 2;
}

.bg-picker-head {
    display: flex;
    align-items: center;
    gap: 14px;
}

.bg-picker-head-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    flex: 0 0 auto;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(192, 132, 252, 0.3), rgba(99, 102, 241, 0.15));
    color: #c4b5fd;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 8px 22px rgba(124, 58, 237, 0.24);
}

.bg-picker-head-info {
    flex: 1;
    min-width: 0;
}

.bg-picker-head-title {
    color: #fff;
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.bg-picker-head-sub {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    margin-top: 4px;
    color: rgba(255, 255, 255, 0.47);
    font-size: 0.73rem;
}

.bg-picker-head-sub i {
    color: #a78bfa;
    font-size: 0.64rem;
}

.bg-picker-head-sub span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bg-picker-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.045);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.07);
    color: rgba(255, 255, 255, 0.62);
    cursor: pointer;
    transition: transform 220ms var(--spring, ease), background 180ms ease, color 180ms ease;
}

.bg-picker-close:hover {
    transform: rotate(90deg);
    background: rgba(248, 113, 113, 0.14);
    color: #fca5a5;
}

.bg-picker-body {
    flex: 1;
    min-height: 0;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.14) transparent;
}

.bg-picker-preview {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 10px;
    box-sizing: border-box;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.11);
    background-color: rgba(255, 255, 255, 0.035);
    background-position: center;
    color: #fff;
    box-shadow: 0 16px 44px rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.bg-picker-preview.none-bg {
    border-style: dashed;
    background: linear-gradient(155deg, rgba(139, 124, 246, 0.08), rgba(255, 255, 255, 0.025));
}

.bg-picker-preview .bpp-badge,
.bg-picker-preview .bpp-date {
    align-self: center;
    border: 1px solid rgba(255, 255, 255, 0.06);
    background: rgba(8, 10, 20, 0.56);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
}

.bg-picker-preview .bpp-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    max-width: calc(100% - 28px);
    padding: 6px 11px;
    border-radius: 999px;
    font-size: 0.67rem;
    font-weight: 750;
}

.bg-picker-preview .bpp-badge i {
    color: #d8b4fe;
}

.bg-picker-preview .bpp-badge span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bg-picker-preview .bpp-date {
    padding: 4px 11px;
    border-radius: 999px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.61rem;
    font-weight: 700;
}

.bg-picker-preview .bpp-msg {
    max-width: 78%;
    padding: 9px 12px;
    border-radius: 16px;
    font-size: 0.78rem;
    line-height: 1.4;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.22);
}

.bg-picker-preview .bpp-in {
    align-self: flex-start;
    border-bottom-left-radius: 5px;
    background: rgba(21, 25, 40, 0.78);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
}

.bg-picker-preview .bpp-out {
    align-self: flex-end;
    border-bottom-right-radius: 5px;
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
}

.bg-picker-preview .bpp-time {
    margin-left: 8px;
    white-space: nowrap;
    font-size: 0.57rem;
    opacity: 0.66;
}

.bg-picker-label {
    display: flex;
    align-items: center;
    gap: 7px;
    margin: 19px 0 10px 2px;
    color: rgba(255, 255, 255, 0.42);
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.bg-picker-label i {
    color: #a78bfa;
    font-size: 0.62rem;
}

.bg-picker-grid {
    display: grid;
}

.bg-picker-swatch {
    min-width: 0;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: transform 220ms var(--spring, ease);
}

.bg-picker-swatch:hover {
    transform: translateY(-3px);
}

.bg-picker-swatch:active {
    transform: scale(0.94);
}

.bg-picker-swatch-prev {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    aspect-ratio: 1;
    border: 2px solid rgba(255, 255, 255, 0.07);
    background-color: rgba(255, 255, 255, 0.035);
    background-position: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: border-color 180ms ease, box-shadow 220ms ease;
}

.bg-picker-swatch.active .bg-picker-swatch-prev {
    border-color: #c084fc;
    box-shadow: 0 0 0 3px rgba(192, 132, 252, 0.2), 0 9px 24px rgba(124, 58, 237, 0.24);
}

.bg-picker-default-swatch .bg-picker-swatch-prev {
    border-style: dashed;
}

.bg-picker-swatch-ico {
    color: rgba(255, 255, 255, 0.68);
    font-size: 1.28rem;
    filter: drop-shadow(0 3px 7px rgba(0, 0, 0, 0.4));
}

.bg-picker-swatch-check {
    position: absolute;
    top: 6px;
    right: 6px;
    display: none;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, #c084fc, #7c3aed);
    color: #fff;
    box-shadow: 0 4px 10px rgba(124, 58, 237, 0.5);
}

.bg-picker-swatch-check i {
    font-size: 0.55rem;
}

.bg-picker-swatch.active .bg-picker-swatch-check {
    display: flex;
}

.bg-picker-swatch-name {
    display: block;
    overflow: hidden;
    margin-top: 6px;
    padding-inline: 2px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.66rem;
    font-weight: 650;
    text-align: center;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bg-picker-swatch.active .bg-picker-swatch-name {
    color: #d8b4fe;
}

.bg-picker-actions {
    display: flex;
}

.bg-picker-upload,
.bg-picker-reset {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    flex: 1;
    box-sizing: border-box;
    padding: 12px 14px;
    border-radius: 17px;
    font-family: inherit;
    font-size: 0.77rem;
    font-weight: 750;
    cursor: pointer;
    transition: transform 200ms var(--spring, ease), background 180ms ease, border-color 180ms ease;
}

.bg-picker-upload {
    border: 1px dashed rgba(167, 139, 250, 0.42);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.17), rgba(99, 102, 241, 0.09));
    background-position: center;
    background-size: cover;
    color: #c4b5fd;
}

.bg-picker-upload input {
    display: none;
}

.bg-picker-upload.selected {
    border-style: solid;
    color: #fff;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.8);
}

.bg-picker-reset {
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.62);
}

.bg-picker-upload:hover,
.bg-picker-reset:hover {
    transform: translateY(-2px);
}

.bg-picker-done {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    background: linear-gradient(135deg, #8b5cf6, #6366f1);
    color: #fff;
    font: inherit;
    font-size: 0.86rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(109, 74, 246, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.24);
    transition: transform 200ms var(--spring, ease), filter 180ms ease;
}

.bg-picker-done:hover {
    transform: translateY(-2px);
    filter: brightness(1.08);
}

[data-theme="light"] .bg-picker-head-title {
    color: #111827;
}

[data-theme="light"] .bg-picker-head-sub,
[data-theme="light"] .bg-picker-label,
[data-theme="light"] .bg-picker-swatch-name {
    color: rgba(15, 23, 42, 0.52);
}

[data-theme="light"] .bg-picker-preview .bpp-in {
    background: rgba(255, 255, 255, 0.84);
    color: #1e293b;
}

[data-theme="light"] .bg-picker-swatch-prev {
    border-color: rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .bg-picker-reset {
    border-color: rgba(15, 23, 42, 0.08);
    background: rgba(15, 23, 42, 0.045);
    color: rgba(15, 23, 42, 0.62);
}

#chat-background-picker.bg-picker-overlay {
    padding: 28px;
    background: rgba(3, 5, 13, 0.56);
    -webkit-backdrop-filter: blur(22px) saturate(155%);
    backdrop-filter: blur(22px) saturate(155%);
}

#chat-background-picker .bg-picker-modal {
    width: min(920px, 100%);
    max-width: 920px;
    max-height: min(88vh, 820px);
    border-radius: 32px;
    background: linear-gradient(155deg, rgba(27, 30, 47, 0.94), rgba(12, 15, 28, 0.91));
    border: 1px solid rgba(255, 255, 255, 0.13);
    box-shadow: 0 40px 110px rgba(0, 0, 0, 0.58), inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

#chat-background-picker .bg-picker-head {
    padding: 22px 24px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.055);
}

#chat-background-picker .bg-picker-head-title {
    font-size: 1.12rem;
}

#chat-background-picker .bg-picker-body {
    display: grid;
    grid-template-columns: minmax(280px, 0.82fr) minmax(420px, 1.18fr);
    gap: 24px;
    padding: 22px 24px;
    overflow: auto;
}

#chat-background-picker .bg-picker-preview-pane,
#chat-background-picker .bg-picker-library {
    min-width: 0;
}

#chat-background-picker .bg-picker-preview-pane {
    position: sticky;
    top: 0;
    align-self: start;
}

#chat-background-picker .bg-picker-preview {
    min-height: 430px;
    border-radius: 25px;
    padding: 22px 18px;
}

#chat-background-picker .bg-picker-preview-note {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    margin-top: 12px;
    padding: 11px 12px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.045);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.69rem;
    line-height: 1.45;
}

#chat-background-picker .bg-picker-preview-note i {
    margin-top: 2px;
    color: #a78bfa;
}

#chat-background-picker .bg-picker-label:first-child {
    margin-top: 1px;
}

#chat-background-picker .bg-picker-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 11px;
}

#chat-background-picker .bg-picker-swatch {
    border: 0;
    padding: 0;
    background: transparent;
    font: inherit;
    color: inherit;
    text-align: center;
}

#chat-background-picker .bg-picker-swatch-prev {
    border-radius: 17px;
}

#chat-background-picker .bg-picker-actions {
    gap: 11px;
}

#chat-background-picker .bg-picker-upload,
#chat-background-picker .bg-picker-reset {
    min-height: 54px;
}

#chat-background-picker .bg-picker-upload.is-processing {
    opacity: 0.62;
    pointer-events: none;
}

#chat-background-picker .bg-picker-foot {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px 22px;
    border-top: 1px solid rgba(255, 255, 255, 0.055);
}

#chat-background-picker .bg-picker-cancel,
#chat-background-picker .bg-picker-done {
    width: auto;
    min-width: 130px;
    min-height: 48px;
    padding: 0 20px;
    border-radius: 16px;
}

#chat-background-picker .bg-picker-cancel {
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.055);
    color: rgba(255, 255, 255, 0.72);
    font: inherit;
    font-size: 0.82rem;
    font-weight: 750;
    cursor: pointer;
}

#chat-background-picker .bg-picker-done:disabled {
    opacity: 0.55;
    cursor: wait;
    transform: none;
}

[data-theme="light"] #chat-background-picker.bg-picker-overlay {
    background: rgba(221, 227, 239, 0.56);
}

[data-theme="light"] #chat-background-picker .bg-picker-modal {
    background: linear-gradient(155deg, rgba(255, 255, 255, 0.96), rgba(242, 245, 252, 0.93));
    border-color: rgba(255, 255, 255, 0.92);
    box-shadow: 0 40px 100px rgba(30, 41, 59, 0.18), inset 0 1px 0 #fff;
}

[data-theme="light"] #chat-background-picker .bg-picker-preview-note,
[data-theme="light"] #chat-background-picker .bg-picker-cancel {
    background: rgba(15, 23, 42, 0.045);
    border-color: rgba(15, 23, 42, 0.07);
    color: rgba(15, 23, 42, 0.58);
}

@media (max-width: 760px) {
    .background-tuning {
        grid-template-columns: 1fr;
    }

    .global-bg-gallery {
        grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
        gap: 9px !important;
    }

    #chat-background-picker.bg-picker-overlay {
        align-items: flex-end;
        padding: 0;
    }

    #chat-background-picker .bg-picker-modal {
        width: 100%;
        max-width: none;
        max-height: min(94dvh, 920px);
        border-radius: 30px 30px 0 0;
    }

    #chat-background-picker .bg-picker-head {
        padding: 17px 18px 14px;
    }

    #chat-background-picker .bg-picker-head-icon {
        width: 42px;
        height: 42px;
        border-radius: 14px;
    }

    #chat-background-picker .bg-picker-body {
        display: block;
        padding: 14px 17px 18px;
    }

    #chat-background-picker .bg-picker-preview-pane {
        position: static;
    }

    #chat-background-picker .bg-picker-preview {
        min-height: 218px;
        border-radius: 21px;
        padding: 16px 14px;
    }

    #chat-background-picker .bg-picker-preview-note {
        display: none;
    }

    #chat-background-picker .bg-picker-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 9px;
    }

    #chat-background-picker .bg-picker-foot {
        padding: 12px 17px calc(14px + env(safe-area-inset-bottom));
    }

    #chat-background-picker .bg-picker-cancel,
    #chat-background-picker .bg-picker-done {
        flex: 1;
        min-width: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .chat-wallpaper,
    .chat-wallpaper-surface,
    #chat-background-picker .bg-picker-modal {
        transition: none !important;
    }
}

/* Wallpaper Studio v4 — final high-specificity visual layer. */
#chat-background-picker {
    --bg-picker-designed: 1;
    --bp-accent: #9b87ff;
    --bp-accent-strong: #785cf6;
    --bp-cyan: #54d8ff;
    --bp-panel: rgba(15, 18, 31, 0.86);
    --bp-line: rgba(255, 255, 255, 0.095);
    --bp-soft: rgba(255, 255, 255, 0.055);
}

#chat-background-picker.bg-picker-overlay {
    padding: 26px;
    background:
        radial-gradient(circle at 18% 14%, rgba(116, 78, 246, 0.2), transparent 35%),
        radial-gradient(circle at 83% 82%, rgba(36, 191, 218, 0.14), transparent 34%),
        rgba(3, 5, 13, 0.68);
    -webkit-backdrop-filter: blur(28px) saturate(150%);
    backdrop-filter: blur(28px) saturate(150%);
}

#chat-background-picker .bg-picker-modal {
    width: min(1040px, 100%);
    max-width: 1040px;
    max-height: min(92vh, 860px);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 36px;
    background:
        linear-gradient(145deg, rgba(31, 34, 53, 0.95), rgba(11, 14, 26, 0.94) 62%, rgba(16, 19, 34, 0.96));
    -webkit-backdrop-filter: blur(60px) saturate(170%);
    backdrop-filter: blur(60px) saturate(170%);
    box-shadow:
        0 55px 140px rgba(0, 0, 0, 0.7),
        0 0 0 1px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.19),
        inset 0 -1px 0 rgba(255, 255, 255, 0.025);
}

#chat-background-picker .bg-picker-modal::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    border-radius: inherit;
    background: linear-gradient(115deg, rgba(255, 255, 255, 0.075), transparent 25%, transparent 70%, rgba(120, 92, 246, 0.05));
    pointer-events: none;
}

#chat-background-picker .bg-picker-noise {
    position: absolute;
    inset: 0;
    z-index: 1;
    border-radius: inherit;
    opacity: 0.14;
    pointer-events: none;
    background-image: radial-gradient(rgba(255, 255, 255, 0.18) 0.55px, transparent 0.7px);
    background-size: 5px 5px;
    -webkit-mask-image: linear-gradient(to bottom, #000, transparent 62%);
    mask-image: linear-gradient(to bottom, #000, transparent 62%);
}

#chat-background-picker .bg-picker-glow-1 {
    top: -230px;
    left: -110px;
    width: 460px;
    height: 460px;
    background: rgba(126, 83, 255, 0.45);
    filter: blur(125px);
}

#chat-background-picker .bg-picker-glow-2 {
    right: -120px;
    bottom: -250px;
    width: 480px;
    height: 480px;
    background: rgba(38, 198, 218, 0.25);
    filter: blur(135px);
}

#chat-background-picker .bg-picker-grabber {
    display: none;
}

#chat-background-picker .bg-picker-head {
    min-height: 88px;
    padding: 18px 24px;
    gap: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.065);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), transparent);
}

#chat-background-picker .bg-picker-head-icon {
    position: relative;
    width: 52px;
    height: 52px;
    border: 1px solid rgba(255, 255, 255, 0.17);
    border-radius: 18px;
    background: linear-gradient(145deg, rgba(172, 139, 255, 0.46), rgba(94, 67, 220, 0.2));
    color: #f4efff;
    font-size: 1.08rem;
    box-shadow:
        0 12px 28px rgba(104, 69, 228, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

#chat-background-picker .bg-picker-head-icon::after {
    content: "";
    position: absolute;
    inset: 5px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 13px;
}

#chat-background-picker .bg-picker-eyebrow {
    margin-bottom: 2px;
    color: #b6a9ff;
    font-size: 0.61rem;
    font-weight: 850;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

#chat-background-picker .bg-picker-head-title {
    font-size: 1.24rem;
    font-weight: 850;
    letter-spacing: -0.035em;
}

#chat-background-picker .bg-picker-head-sub {
    margin-top: 3px;
    color: rgba(255, 255, 255, 0.46);
    font-size: 0.71rem;
}

#chat-background-picker .bg-picker-private-pill {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 8px 11px;
    border: 1px solid rgba(133, 240, 201, 0.14);
    border-radius: 999px;
    background: rgba(80, 205, 158, 0.075);
    color: #a7e7ce;
    font-size: 0.66rem;
    font-weight: 700;
    white-space: nowrap;
}

#chat-background-picker .bg-picker-private-pill i {
    font-size: 0.61rem;
}

#chat-background-picker .bg-picker-close {
    width: 38px;
    height: 38px;
    border-color: rgba(255, 255, 255, 0.075);
    background: rgba(255, 255, 255, 0.065);
}

#chat-background-picker .bg-picker-body {
    grid-template-columns: minmax(350px, 0.92fr) minmax(470px, 1.08fr);
    gap: 20px;
    padding: 20px;
    background: rgba(2, 4, 11, 0.13);
}

#chat-background-picker .bg-picker-preview-pane {
    top: 0;
}

#chat-background-picker .bg-picker-device {
    position: relative;
    overflow: hidden;
    padding: 8px;
    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 29px;
    background: rgba(8, 10, 20, 0.8);
    box-shadow:
        0 24px 54px rgba(0, 0, 0, 0.34),
        inset 0 1px 0 rgba(255, 255, 255, 0.11);
}

#chat-background-picker .bg-picker-device-top {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 54px;
    padding: 5px 8px 10px;
}

#chat-background-picker .bg-picker-device-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    background: linear-gradient(145deg, #a58cff, #6551de);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 800;
    box-shadow: 0 6px 15px rgba(95, 74, 218, 0.3);
}

#chat-background-picker .bg-picker-device-contact {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-width: 0;
}

#chat-background-picker .bg-picker-device-contact strong {
    overflow: hidden;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.75rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#chat-background-picker .bg-picker-device-contact small {
    margin-top: 2px;
    color: #76d7af;
    font-size: 0.58rem;
}

#chat-background-picker .bg-picker-device-action {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.055);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.7rem;
}

#chat-background-picker .bg-picker-preview {
    min-height: 386px;
    padding: 22px 16px 18px;
    border: 0;
    border-radius: 22px;
    background: #090c17;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
    isolation: isolate;
}

#chat-background-picker .bg-picker-preview::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    opacity: 0.2;
    background-image: radial-gradient(rgba(255, 255, 255, 0.2) 0.6px, transparent 0.8px);
    background-size: 12px 12px;
    pointer-events: none;
}

#chat-background-picker .bg-picker-preview .bpp-wallpaper {
    position: absolute;
    inset: -12px;
    z-index: 0;
    transform: scale(1.04);
    filter: blur(var(--bp-preview-blur, 0px));
    transition: background-image 280ms ease, filter 180ms ease;
}

#chat-background-picker .bg-picker-preview .bpp-doodles {
    position: absolute;
    inset: -10px;
    z-index: 1;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(218, 208, 255, 0.8));
    -webkit-mask-image: url("/web/img/doodle-pattern.svg");
    mask-image: url("/web/img/doodle-pattern.svg");
    -webkit-mask-position: 4px 2px;
    mask-position: 4px 2px;
    -webkit-mask-repeat: repeat;
    mask-repeat: repeat;
    -webkit-mask-size: 190px 190px;
    mask-size: 190px 190px;
    opacity: var(--bp-doodle-opacity, 0.12);
    mix-blend-mode: screen;
    transform: rotate(-1.25deg) scale(1.025);
    pointer-events: none;
    transition: opacity 180ms ease;
}

#chat-background-picker .bg-picker-preview.doodles-off .bpp-doodles {
    opacity: 0;
}

#chat-background-picker .bg-picker-preview.none-bg .bpp-doodles {
    opacity: 0;
}

#chat-background-picker .bg-picker-preview .bpp-tint {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: rgba(2, 5, 14, var(--bp-preview-dim, 0.16));
    pointer-events: none;
}

#chat-background-picker .bg-picker-preview > :not(.bpp-wallpaper, .bpp-doodles, .bpp-tint) {
    position: relative;
    z-index: 3;
}

#chat-background-picker .bg-picker-preview .bpp-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 6px 10px;
    border-color: rgba(255, 255, 255, 0.11);
    background: rgba(8, 10, 20, 0.52);
    color: rgba(255, 255, 255, 0.9);
}

#chat-background-picker .bg-picker-preview .bpp-date {
    margin-bottom: auto;
}

#chat-background-picker .bg-picker-preview .bpp-msg {
    font-size: 0.76rem;
}

#chat-background-picker .bg-picker-preview .bpp-in {
    border: 1px solid rgba(255, 255, 255, 0.075);
    background: rgba(19, 23, 37, 0.74);
}

#chat-background-picker .bg-picker-preview .bpp-out {
    background: linear-gradient(135deg, #8d70ff, #6759e8);
    box-shadow: 0 8px 22px rgba(80, 57, 196, 0.28);
}

#chat-background-picker .bg-picker-device-composer {
    display: flex;
    align-items: center;
    gap: 9px;
    min-height: 44px;
    margin-top: 7px;
    padding: 0 11px;
    border: 1px solid rgba(255, 255, 255, 0.065);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.045);
    color: rgba(255, 255, 255, 0.34);
    font-size: 0.68rem;
}

#chat-background-picker .bg-picker-device-composer span {
    flex: 1;
}

#chat-background-picker .bg-picker-preview-note {
    margin-top: 10px;
    padding: 10px 12px;
    border: 1px solid rgba(255, 255, 255, 0.055);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.035);
    color: rgba(255, 255, 255, 0.47);
}

#chat-background-picker .bg-picker-preview-note strong {
    color: rgba(255, 255, 255, 0.72);
}

#chat-background-picker .bg-picker-library {
    padding: 2px 4px 2px 2px;
}

#chat-background-picker .bg-picker-library-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 44px;
    margin-bottom: 11px;
}

#chat-background-picker .bg-picker-library-head > div {
    display: flex;
    flex-direction: column;
}

#chat-background-picker .bg-picker-library-head span:first-child {
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.86rem;
    font-weight: 800;
    letter-spacing: -0.015em;
}

#chat-background-picker .bg-picker-library-head small {
    margin-top: 3px;
    color: rgba(255, 255, 255, 0.38);
    font-size: 0.64rem;
}

#chat-background-picker .bg-picker-count {
    padding: 6px 9px;
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.045);
    color: rgba(255, 255, 255, 0.5) !important;
    font-size: 0.59rem !important;
    font-weight: 700 !important;
    white-space: nowrap;
}

#chat-background-picker .bg-picker-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 9px;
}

#chat-background-picker .bg-picker-swatch {
    position: relative;
    padding: 6px 6px 7px;
    border: 1px solid transparent;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.025);
    transition: transform 220ms var(--spring, ease), border-color 180ms ease, background 180ms ease, box-shadow 220ms ease;
}

#chat-background-picker .bg-picker-swatch:hover {
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.055);
}

#chat-background-picker .bg-picker-swatch.active {
    border-color: rgba(166, 139, 255, 0.46);
    background: linear-gradient(145deg, rgba(137, 100, 255, 0.16), rgba(255, 255, 255, 0.045));
    box-shadow: 0 10px 24px rgba(74, 48, 174, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

#chat-background-picker .bg-picker-swatch-prev {
    aspect-ratio: 1.42 / 1;
    border-width: 1px;
    border-radius: 13px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.11), 0 5px 13px rgba(0, 0, 0, 0.2);
}

#chat-background-picker .bg-picker-swatch.active .bg-picker-swatch-prev {
    border-color: rgba(211, 197, 255, 0.78);
    box-shadow: 0 0 0 2px rgba(157, 125, 255, 0.18), 0 8px 20px rgba(72, 44, 174, 0.24);
}

#chat-background-picker .bg-picker-swatch-kicker {
    position: absolute;
    top: 6px;
    left: 7px;
    padding: 2px 5px;
    border-radius: 999px;
    background: rgba(5, 7, 15, 0.44);
    color: rgba(255, 255, 255, 0.54);
    font-size: 0.43rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

#chat-background-picker .bg-picker-swatch-ico {
    font-size: 1.08rem;
    color: rgba(255, 255, 255, 0.74);
}

#chat-background-picker .bg-picker-swatch-check {
    top: 6px;
    right: 6px;
    width: 19px;
    height: 19px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

#chat-background-picker .bg-picker-swatch-name {
    margin: 6px 2px 0;
    color: rgba(255, 255, 255, 0.56);
    font-size: 0.62rem;
    text-align: left;
}

#chat-background-picker .bg-picker-swatch.active .bg-picker-swatch-name {
    color: #d9d0ff;
}

#chat-background-picker .bg-picker-label {
    margin: 16px 0 9px 2px;
    color: rgba(255, 255, 255, 0.45);
}

#chat-background-picker .bg-picker-actions {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 9px;
}

#chat-background-picker .bg-picker-upload,
#chat-background-picker .bg-picker-reset {
    justify-content: flex-start;
    min-height: 62px;
    padding: 9px 11px;
    border-radius: 17px;
    text-align: left;
}

#chat-background-picker .bg-picker-upload {
    border: 1px solid rgba(165, 139, 255, 0.2);
    background: linear-gradient(135deg, rgba(136, 99, 255, 0.15), rgba(84, 216, 255, 0.055));
}

#chat-background-picker .bg-picker-reset {
    border-color: rgba(255, 255, 255, 0.075);
    background: rgba(255, 255, 255, 0.035);
}

#chat-background-picker .bg-picker-action-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    flex: 0 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 13px;
    background: rgba(255, 255, 255, 0.07);
    color: #c7b9ff;
}

#chat-background-picker .bg-picker-action-copy {
    display: flex;
    flex: 1;
    flex-direction: column;
    min-width: 0;
}

#chat-background-picker .bg-picker-action-copy strong {
    overflow: hidden;
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.68rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#chat-background-picker .bg-picker-action-copy small {
    overflow: hidden;
    margin-top: 3px;
    color: rgba(255, 255, 255, 0.34);
    font-size: 0.53rem;
    font-weight: 500;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#chat-background-picker .bg-picker-action-arrow {
    color: rgba(255, 255, 255, 0.25);
    font-size: 0.57rem;
}

#chat-background-picker .bg-picker-upload.selected .bg-picker-action-copy strong,
#chat-background-picker .bg-picker-upload.selected .bg-picker-action-copy small {
    color: #fff;
}

#chat-background-picker .bg-picker-tuning {
    margin-top: 10px;
    padding: 11px 12px 12px;
    border: 1px solid rgba(255, 255, 255, 0.065);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.028);
}

#chat-background-picker .bg-picker-tuning-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 9px;
}

#chat-background-picker .bg-picker-tuning-head span {
    display: flex;
    align-items: center;
    gap: 7px;
    color: rgba(255, 255, 255, 0.74);
    font-size: 0.68rem;
    font-weight: 750;
}

#chat-background-picker .bg-picker-tuning-head span i {
    color: #ad9bff;
}

#chat-background-picker .bg-picker-tuning-head small {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.53rem;
}

#chat-background-picker .bg-picker-tuning-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 5px 10px;
    align-items: center;
    padding: 7px 0 5px;
}

#chat-background-picker .bg-picker-tuning-row + .bg-picker-tuning-row {
    border-top: 1px solid rgba(255, 255, 255, 0.045);
}

#chat-background-picker .bg-picker-tuning-row > span {
    display: flex;
    align-items: center;
    gap: 7px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.61rem;
}

#chat-background-picker .bg-picker-tuning-row > span i {
    width: 13px;
    color: rgba(178, 159, 255, 0.78);
    text-align: center;
}

#chat-background-picker .bg-picker-tuning-row output {
    color: rgba(255, 255, 255, 0.43);
    font-size: 0.57rem;
    font-variant-numeric: tabular-nums;
}

#chat-background-picker .bg-picker-tuning-row input {
    grid-column: 1 / -1;
    width: 100%;
    height: 4px;
    accent-color: var(--bp-accent);
    cursor: pointer;
}

#chat-background-picker .bg-picker-doodle-control {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 9px;
    align-items: center;
    margin-top: 6px;
    padding: 10px 0 3px;
    border-top: 1px solid rgba(255, 255, 255, 0.045);
}

#chat-background-picker .bg-picker-doodle-icon {
    display: grid;
    width: 31px;
    height: 31px;
    place-items: center;
    border: 1px solid rgba(166, 144, 255, 0.18);
    border-radius: 10px;
    background: rgba(145, 116, 239, 0.11);
    color: #af9cff;
    font-size: 0.7rem;
}

#chat-background-picker .bg-picker-doodle-copy {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 1px;
}

#chat-background-picker .bg-picker-doodle-copy strong {
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.64rem;
}

#chat-background-picker .bg-picker-doodle-copy small {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.52rem;
}

#chat-background-picker .bg-picker-doodle-toggle {
    position: relative;
    width: 38px;
    height: 22px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.075);
    cursor: pointer;
    transition: background 180ms ease, border-color 180ms ease;
}

#chat-background-picker .bg-picker-doodle-toggle::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
    transition: transform 210ms var(--spring, ease);
}

#chat-background-picker .bg-picker-doodle-toggle[aria-pressed="true"] {
    border-color: rgba(164, 139, 255, 0.48);
    background: linear-gradient(135deg, #9a7cf5, #6856dc);
}

#chat-background-picker .bg-picker-doodle-toggle[aria-pressed="true"]::after {
    transform: translateX(16px);
}

#chat-background-picker .bg-picker-doodle-strength {
    display: grid;
    grid-column: 1 / -1;
    grid-template-columns: 1fr auto;
    gap: 4px 10px;
    padding-left: 40px;
    color: rgba(255, 255, 255, 0.31);
    font-size: 0.52rem;
    transition: opacity 180ms ease;
}

#chat-background-picker .bg-picker-doodle-strength input {
    grid-column: 1 / -1;
    width: 100%;
    height: 4px;
    accent-color: var(--bp-accent);
    cursor: pointer;
}

#chat-background-picker .bg-picker-doodle-control.is-off .bg-picker-doodle-strength {
    pointer-events: none;
    opacity: 0.28;
}

[data-theme="light"] #chat-background-picker .bg-picker-preview .bpp-doodles {
    background: linear-gradient(135deg, rgba(38, 34, 63, 0.9), rgba(85, 67, 139, 0.72));
    mix-blend-mode: multiply;
}

[data-theme="light"] #chat-background-picker .bg-picker-doodle-copy strong {
    color: rgba(15, 23, 42, 0.72);
}

[data-theme="light"] #chat-background-picker .bg-picker-doodle-copy small,
[data-theme="light"] #chat-background-picker .bg-picker-doodle-strength {
    color: rgba(15, 23, 42, 0.4);
}

#chat-background-picker .bg-picker-foot {
    justify-content: space-between;
    min-height: 78px;
    padding: 13px 20px 16px;
    border-top-color: rgba(255, 255, 255, 0.065);
    background: linear-gradient(180deg, rgba(10, 13, 24, 0.82), rgba(9, 11, 21, 0.95));
}

#chat-background-picker .bg-picker-foot-selection {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

#chat-background-picker .bg-picker-foot-dot {
    width: 9px;
    height: 9px;
    flex: 0 0 auto;
    border: 2px solid rgba(255, 255, 255, 0.55);
    border-radius: 50%;
    background: #8f75ff;
    box-shadow: 0 0 0 5px rgba(143, 117, 255, 0.12), 0 0 18px rgba(143, 117, 255, 0.5);
}

#chat-background-picker .bg-picker-foot-selection > span:last-child {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

#chat-background-picker .bg-picker-foot-selection small {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.53rem;
}

#chat-background-picker .bg-picker-foot-selection strong {
    overflow: hidden;
    max-width: 210px;
    margin-top: 2px;
    color: rgba(255, 255, 255, 0.77);
    font-size: 0.67rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#chat-background-picker .bg-picker-foot-actions {
    display: flex;
    gap: 9px;
}

#chat-background-picker .bg-picker-cancel,
#chat-background-picker .bg-picker-done {
    min-width: 136px;
    min-height: 48px;
    border-radius: 16px;
}

#chat-background-picker .bg-picker-cancel {
    transition: background 180ms ease, color 180ms ease, transform 180ms var(--spring, ease);
}

#chat-background-picker .bg-picker-cancel:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.09);
    color: #fff;
}

#chat-background-picker .bg-picker-done {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #9a7dff, #6e5bed 58%, #5b7ff0);
    box-shadow: 0 13px 32px rgba(91, 68, 220, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

#chat-background-picker .bg-picker-done::before {
    content: "";
    position: absolute;
    top: -60%;
    left: -40%;
    width: 40%;
    height: 220%;
    transform: rotate(22deg);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.26), transparent);
    transition: left 500ms ease;
}

#chat-background-picker .bg-picker-done:hover::before {
    left: 120%;
}

[data-theme="light"] #chat-background-picker {
    --bp-panel: rgba(255, 255, 255, 0.88);
    --bp-line: rgba(15, 23, 42, 0.075);
    --bp-soft: rgba(15, 23, 42, 0.035);
}

[data-theme="light"] #chat-background-picker.bg-picker-overlay {
    background:
        radial-gradient(circle at 18% 14%, rgba(139, 92, 246, 0.16), transparent 35%),
        radial-gradient(circle at 83% 82%, rgba(14, 165, 233, 0.11), transparent 34%),
        rgba(225, 230, 240, 0.68);
}

[data-theme="light"] #chat-background-picker .bg-picker-modal {
    border-color: rgba(255, 255, 255, 0.94);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.97), rgba(242, 245, 252, 0.95));
    box-shadow: 0 45px 110px rgba(51, 65, 85, 0.23), inset 0 1px 0 #fff;
}

[data-theme="light"] #chat-background-picker .bg-picker-head,
[data-theme="light"] #chat-background-picker .bg-picker-foot {
    border-color: rgba(15, 23, 42, 0.065);
    background: rgba(255, 255, 255, 0.45);
}

[data-theme="light"] #chat-background-picker .bg-picker-head-title,
[data-theme="light"] #chat-background-picker .bg-picker-library-head span:first-child {
    color: #151b2b;
}

[data-theme="light"] #chat-background-picker .bg-picker-head-sub,
[data-theme="light"] #chat-background-picker .bg-picker-library-head small,
[data-theme="light"] #chat-background-picker .bg-picker-count,
[data-theme="light"] #chat-background-picker .bg-picker-label {
    color: rgba(30, 41, 59, 0.48) !important;
}

[data-theme="light"] #chat-background-picker .bg-picker-private-pill {
    border-color: rgba(5, 150, 105, 0.13);
    background: rgba(16, 185, 129, 0.07);
    color: #168467;
}

[data-theme="light"] #chat-background-picker .bg-picker-library,
[data-theme="light"] #chat-background-picker .bg-picker-tuning,
[data-theme="light"] #chat-background-picker .bg-picker-swatch,
[data-theme="light"] #chat-background-picker .bg-picker-preview-note,
[data-theme="light"] #chat-background-picker .bg-picker-reset {
    border-color: rgba(15, 23, 42, 0.07);
    background-color: rgba(15, 23, 42, 0.025);
}

[data-theme="light"] #chat-background-picker .bg-picker-swatch:hover,
[data-theme="light"] #chat-background-picker .bg-picker-swatch.active {
    border-color: rgba(124, 92, 246, 0.22);
    background: rgba(124, 92, 246, 0.07);
}

[data-theme="light"] #chat-background-picker .bg-picker-swatch-name,
[data-theme="light"] #chat-background-picker .bg-picker-action-copy strong,
[data-theme="light"] #chat-background-picker .bg-picker-tuning-head span,
[data-theme="light"] #chat-background-picker .bg-picker-foot-selection strong {
    color: rgba(15, 23, 42, 0.7);
}

[data-theme="light"] #chat-background-picker .bg-picker-action-copy small,
[data-theme="light"] #chat-background-picker .bg-picker-tuning-head small,
[data-theme="light"] #chat-background-picker .bg-picker-tuning-row > span,
[data-theme="light"] #chat-background-picker .bg-picker-tuning-row output,
[data-theme="light"] #chat-background-picker .bg-picker-foot-selection small {
    color: rgba(15, 23, 42, 0.42);
}

@media (max-width: 800px) {
    #chat-background-picker.bg-picker-overlay {
        align-items: flex-end;
        padding: 0;
    }

    #chat-background-picker .bg-picker-modal {
        width: 100%;
        max-width: none;
        max-height: 96dvh;
        border-radius: 31px 31px 0 0;
        transform: translateY(100%);
    }

    #chat-background-picker.bg-picker-overlay.open .bg-picker-modal {
        transform: translateY(0);
    }

    #chat-background-picker .bg-picker-grabber {
        position: absolute;
        top: 7px;
        left: 50%;
        z-index: 4;
        display: block;
        width: 38px;
        height: 5px;
        transform: translateX(-50%);
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.22);
    }

    #chat-background-picker .bg-picker-head {
        min-height: 76px;
        padding: 18px 15px 11px;
    }

    #chat-background-picker .bg-picker-head-icon {
        width: 43px;
        height: 43px;
        border-radius: 15px;
    }

    #chat-background-picker .bg-picker-eyebrow {
        font-size: 0.54rem;
    }

    #chat-background-picker .bg-picker-head-title {
        font-size: 1.02rem;
    }

    #chat-background-picker .bg-picker-private-pill {
        display: none;
    }

    #chat-background-picker .bg-picker-body {
        display: block;
        padding: 12px 14px 18px;
    }

    #chat-background-picker .bg-picker-preview-pane {
        position: static;
    }

    #chat-background-picker .bg-picker-device {
        padding: 6px;
        border-radius: 24px;
    }

    #chat-background-picker .bg-picker-device-top {
        min-height: 45px;
        padding-bottom: 7px;
    }

    #chat-background-picker .bg-picker-device-avatar {
        width: 32px;
        height: 32px;
    }

    #chat-background-picker .bg-picker-preview {
        min-height: 240px;
        border-radius: 19px;
        padding: 15px 12px 13px;
    }

    #chat-background-picker .bg-picker-device-composer {
        min-height: 39px;
    }

    #chat-background-picker .bg-picker-preview-note {
        display: none;
    }

    #chat-background-picker .bg-picker-library {
        padding: 15px 0 0;
    }

    #chat-background-picker .bg-picker-library-head {
        min-height: 38px;
        margin-bottom: 8px;
    }

    #chat-background-picker .bg-picker-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 7px;
    }

    #chat-background-picker .bg-picker-swatch {
        padding: 5px;
        border-radius: 15px;
    }

    #chat-background-picker .bg-picker-swatch-prev {
        aspect-ratio: 1.25 / 1;
        border-radius: 11px;
    }

    #chat-background-picker .bg-picker-swatch-kicker {
        display: none;
    }

    #chat-background-picker .bg-picker-swatch-name {
        font-size: 0.57rem;
    }

    #chat-background-picker .bg-picker-actions {
        grid-template-columns: 1fr 1fr;
    }

    #chat-background-picker .bg-picker-upload,
    #chat-background-picker .bg-picker-reset {
        min-height: 58px;
        padding: 8px;
    }

    #chat-background-picker .bg-picker-action-icon {
        width: 34px;
        height: 34px;
        border-radius: 11px;
    }

    #chat-background-picker .bg-picker-action-copy small {
        display: none;
    }

    #chat-background-picker .bg-picker-tuning {
        margin-bottom: 2px;
    }

    #chat-background-picker .bg-picker-foot {
        position: sticky;
        bottom: 0;
        min-height: 72px;
        padding: 10px 14px calc(11px + env(safe-area-inset-bottom));
    }

    #chat-background-picker .bg-picker-foot-selection {
        display: none;
    }

    #chat-background-picker .bg-picker-foot-actions {
        display: grid;
        grid-template-columns: 0.8fr 1.2fr;
        width: 100%;
    }

    #chat-background-picker .bg-picker-cancel,
    #chat-background-picker .bg-picker-done {
        width: 100%;
        min-width: 0;
    }
}

@media (max-width: 380px) {
    #chat-background-picker .bg-picker-preview {
        min-height: 218px;
    }

    #chat-background-picker .bg-picker-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* Wallpaper Studio v5 — personal/shared conversation modes. */
#chat-background-picker .bg-picker-scope-dock {
    position: relative;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 12px 22px 13px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.065);
    background:
        linear-gradient(90deg, rgba(155, 135, 255, 0.08), rgba(84, 216, 255, 0.035) 54%, transparent),
        rgba(7, 10, 20, 0.24);
}

#chat-background-picker .bg-picker-scope-intro {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 205px;
}

#chat-background-picker .bg-picker-scope-intro > span:last-child,
#chat-background-picker .bg-picker-scope-copy {
    display: flex;
    min-width: 0;
    flex-direction: column;
}

#chat-background-picker .bg-picker-scope-intro-icon {
    display: grid;
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    place-items: center;
    border: 1px solid rgba(167, 139, 250, 0.2);
    border-radius: 12px;
    background: linear-gradient(145deg, rgba(167, 139, 250, 0.2), rgba(91, 78, 180, 0.08));
    color: #c4b5fd;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

#chat-background-picker .bg-picker-scope-intro strong {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: -0.015em;
}

#chat-background-picker .bg-picker-scope-intro small {
    margin-top: 2px;
    color: rgba(255, 255, 255, 0.38);
    font-size: 0.59rem;
}

#chat-background-picker .bg-picker-scope-switch {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    padding: 4px;
    border: 1px solid rgba(255, 255, 255, 0.075);
    border-radius: 19px;
    background: rgba(255, 255, 255, 0.035);
    box-shadow: inset 0 1px 8px rgba(0, 0, 0, 0.18);
}

#chat-background-picker .bg-picker-scope-option {
    position: relative;
    display: flex;
    min-width: 0;
    min-height: 54px;
    align-items: center;
    gap: 10px;
    overflow: hidden;
    padding: 7px 12px 7px 8px;
    border: 1px solid transparent;
    border-radius: 15px;
    background: transparent;
    color: rgba(255, 255, 255, 0.56);
    text-align: left;
    cursor: pointer;
    transition: border-color 220ms ease, background 220ms ease, color 220ms ease, transform 220ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 220ms ease;
}

#chat-background-picker .bg-picker-scope-option::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0;
    background: radial-gradient(circle at 18% 25%, rgba(255, 255, 255, 0.16), transparent 42%);
    transition: opacity 220ms ease;
    pointer-events: none;
}

#chat-background-picker .bg-picker-scope-option:not(:disabled):hover {
    transform: translateY(-1px);
    color: rgba(255, 255, 255, 0.86);
    background: rgba(255, 255, 255, 0.045);
}

#chat-background-picker .bg-picker-scope-option.active {
    border-color: rgba(169, 143, 255, 0.32);
    background: linear-gradient(135deg, rgba(153, 125, 255, 0.24), rgba(105, 86, 221, 0.12));
    color: #fff;
    box-shadow: 0 8px 24px rgba(67, 48, 151, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

#chat-background-picker .bg-picker-scope-option.active::before {
    opacity: 1;
}

#chat-background-picker .bg-picker-scope-option:disabled {
    opacity: 0.38;
    cursor: not-allowed;
}

#chat-background-picker .bg-picker-scope-icon {
    position: relative;
    z-index: 1;
    display: grid;
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.055);
    font-size: 0.76rem;
    transition: background 220ms ease, transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
}

#chat-background-picker .bg-picker-scope-option.active .bg-picker-scope-icon {
    transform: scale(1.04);
    background: linear-gradient(145deg, rgba(183, 160, 255, 0.35), rgba(122, 94, 232, 0.18));
}

#chat-background-picker .bg-picker-scope-copy {
    position: relative;
    z-index: 1;
    flex: 1;
}

#chat-background-picker .bg-picker-scope-copy strong {
    overflow: hidden;
    color: inherit;
    font-size: 0.73rem;
    font-weight: 800;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#chat-background-picker .bg-picker-scope-copy small {
    overflow: hidden;
    margin-top: 2px;
    color: rgba(255, 255, 255, 0.34);
    font-size: 0.57rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#chat-background-picker .bg-picker-scope-check {
    position: relative;
    z-index: 1;
    display: grid;
    width: 20px;
    height: 20px;
    flex: 0 0 auto;
    transform: scale(0.65);
    opacity: 0;
    place-items: center;
    border-radius: 50%;
    background: #a78bfa;
    color: #fff;
    font-size: 0.55rem;
    box-shadow: 0 4px 12px rgba(124, 92, 246, 0.38);
    transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1), opacity 180ms ease;
}

#chat-background-picker .bg-picker-scope-option.active .bg-picker-scope-check {
    transform: scale(1);
    opacity: 1;
}

#chat-background-picker.scope-shared {
    --bp-accent: #58dfcf;
    --bp-accent-strong: #25bca9;
    --bp-cyan: #74e6ff;
}

#chat-background-picker.scope-shared .bg-picker-modal {
    box-shadow: 0 45px 120px rgba(0, 0, 0, 0.6), 0 0 70px rgba(43, 205, 185, 0.09), inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

#chat-background-picker.scope-shared .bg-picker-glow-1 {
    background: rgba(48, 211, 191, 0.2);
}

#chat-background-picker.scope-shared .bg-picker-scope-dock {
    background:
        linear-gradient(90deg, rgba(56, 211, 190, 0.1), rgba(84, 216, 255, 0.045) 56%, transparent),
        rgba(7, 14, 20, 0.28);
}

#chat-background-picker.scope-shared .bg-picker-scope-shared.active {
    border-color: rgba(90, 232, 213, 0.32);
    background: linear-gradient(135deg, rgba(48, 211, 191, 0.23), rgba(29, 160, 171, 0.12));
    box-shadow: 0 8px 25px rgba(22, 147, 135, 0.17), inset 0 1px 0 rgba(255, 255, 255, 0.14);
}

#chat-background-picker.scope-shared .bg-picker-scope-shared.active .bg-picker-scope-icon {
    background: linear-gradient(145deg, rgba(97, 234, 217, 0.36), rgba(26, 167, 153, 0.2));
}

#chat-background-picker.scope-shared .bg-picker-scope-check,
#chat-background-picker.scope-shared .bg-picker-foot-dot {
    background: #4fdbc9;
    box-shadow: 0 4px 15px rgba(41, 198, 180, 0.4);
}

#chat-background-picker.scope-shared .bg-picker-private-pill {
    border-color: rgba(80, 225, 207, 0.2);
    background: rgba(45, 202, 184, 0.1);
    color: #9bf0e4;
}

#chat-background-picker.scope-shared .bg-picker-preview-note {
    border-color: rgba(76, 218, 201, 0.15);
    background: rgba(40, 190, 174, 0.065);
    color: rgba(186, 245, 237, 0.64);
}

[data-theme="light"] #chat-background-picker .bg-picker-scope-dock {
    border-color: rgba(15, 23, 42, 0.06);
    background: linear-gradient(90deg, rgba(124, 92, 246, 0.07), rgba(14, 165, 233, 0.025), rgba(255, 255, 255, 0.34));
}

[data-theme="light"] #chat-background-picker .bg-picker-scope-switch {
    border-color: rgba(15, 23, 42, 0.07);
    background: rgba(15, 23, 42, 0.035);
    box-shadow: inset 0 1px 6px rgba(15, 23, 42, 0.05);
}

[data-theme="light"] #chat-background-picker .bg-picker-scope-intro strong,
[data-theme="light"] #chat-background-picker .bg-picker-scope-option {
    color: rgba(15, 23, 42, 0.66);
}

[data-theme="light"] #chat-background-picker .bg-picker-scope-intro small,
[data-theme="light"] #chat-background-picker .bg-picker-scope-copy small {
    color: rgba(15, 23, 42, 0.4);
}

[data-theme="light"] #chat-background-picker .bg-picker-scope-option.active {
    color: #3b2c75;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.13), rgba(255, 255, 255, 0.7));
}

[data-theme="light"] #chat-background-picker.scope-shared .bg-picker-scope-dock {
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.08), rgba(14, 165, 233, 0.035), rgba(255, 255, 255, 0.38));
}

[data-theme="light"] #chat-background-picker.scope-shared .bg-picker-scope-shared.active {
    color: #126c63;
    background: linear-gradient(135deg, rgba(20, 184, 166, 0.14), rgba(255, 255, 255, 0.72));
}

@media (max-width: 800px) {
    #chat-background-picker .bg-picker-scope-dock {
        display: block;
        padding: 8px 13px 10px;
    }

    #chat-background-picker .bg-picker-scope-intro {
        min-width: 0;
        margin: 0 4px 7px;
    }

    #chat-background-picker .bg-picker-scope-intro-icon {
        width: 27px;
        height: 27px;
        border-radius: 9px;
        font-size: 0.68rem;
    }

    #chat-background-picker .bg-picker-scope-intro strong {
        font-size: 0.68rem;
    }

    #chat-background-picker .bg-picker-scope-intro small {
        display: none;
    }

    #chat-background-picker .bg-picker-scope-switch {
        gap: 5px;
        padding: 3px;
        border-radius: 17px;
    }

    #chat-background-picker .bg-picker-scope-option {
        min-height: 49px;
        gap: 7px;
        padding: 6px 8px 6px 6px;
        border-radius: 14px;
    }

    #chat-background-picker .bg-picker-scope-icon {
        width: 32px;
        height: 32px;
        border-radius: 11px;
        font-size: 0.68rem;
    }

    #chat-background-picker .bg-picker-scope-copy strong {
        font-size: 0.66rem;
    }

    #chat-background-picker .bg-picker-scope-copy small {
        font-size: 0.51rem;
    }

    #chat-background-picker .bg-picker-scope-check {
        width: 17px;
        height: 17px;
        font-size: 0.47rem;
    }
}

@media (max-width: 390px) {
    #chat-background-picker .bg-picker-scope-check {
        display: none;
    }

    #chat-background-picker .bg-picker-scope-copy small {
        display: none;
    }
}