.interface-style-setting {
    padding: 16px;
    border: 1px solid rgba(148, 163, 184, .28);
    border-radius: 12px;
    background: rgba(248, 250, 252, .78);
}

html.dark .interface-style-setting {
    border-color: rgba(71, 85, 105, .78);
    background: rgba(15, 23, 42, .38);
}

.interface-style-grid {
    display: grid;
    margin-top: 13px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.interface-style-option {
    position: relative;
    min-width: 0;
    padding: 14px;
    color: #334155;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    background: #fff;
    text-align: left;
    transition: border-color .16s ease, background-color .16s ease, box-shadow .16s ease, transform .16s ease;
}

.interface-style-option:hover {
    border-color: var(--c500, #6366f1);
    transform: translateY(-1px);
}

.interface-style-option[data-active="true"] {
    border-color: var(--c600, #4f46e5);
    background: var(--c50, #eef2ff);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--c600, #4f46e5) 22%, transparent);
}

html.dark .interface-style-option {
    color: #e2e8f0;
    border-color: #475569;
    background: #1e293b;
}

html.dark .interface-style-option[data-active="true"] {
    border-color: var(--c400, #818cf8);
    background: color-mix(in srgb, var(--c900, #312e81) 52%, #172033);
}

.interface-style-option-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.interface-style-option-title {
    font-size: 14px;
    font-weight: 800;
}

.interface-style-option-status {
    flex: 0 0 auto;
    padding: 3px 7px;
    color: #64748b;
    border: 1px solid #cbd5e1;
    border-radius: 999px;
    background: #f8fafc;
    font-size: 9px;
    font-weight: 800;
    letter-spacing: .05em;
    text-transform: uppercase;
}

.interface-style-option[data-active="true"] .interface-style-option-status {
    color: #fff;
    border-color: var(--c600, #4f46e5);
    background: var(--c600, #4f46e5);
}

.interface-style-option-description {
    display: block;
    margin-top: 7px;
    color: #64748b;
    font-size: 11px;
    line-height: 1.45;
}

html.dark .interface-style-option-description { color: #94a3b8; }

.interface-style-dialog {
    width: min(760px, calc(100vw - 28px));
    max-height: calc(100dvh - 28px);
    padding: 26px;
    overflow-y: auto;
    color: #172033;
    border: 1px solid #d6dce5;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 30px 90px rgba(15, 23, 42, .28);
}

html.dark .interface-style-dialog {
    color: #e5e7eb;
    border-color: #354052;
    background: #161d27;
}

.interface-style-modal-grid {
    display: grid;
    margin-top: 20px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.interface-style-modal-choice {
    display: flex;
    min-height: 192px;
    padding: 19px;
    flex-direction: column;
    color: #334155;
    border: 1px solid #cbd5e1;
    border-radius: 13px;
    background: #fff;
    text-align: left;
    transition: border-color .16s ease, box-shadow .16s ease, transform .16s ease;
}

.interface-style-modal-choice:hover {
    border-color: var(--c600, #4f46e5);
    box-shadow: 0 10px 28px rgba(15, 23, 42, .09);
    transform: translateY(-2px);
}

html.dark .interface-style-modal-choice {
    color: #e5e7eb;
    border-color: #3b4758;
    background: #1d2633;
}

.interface-style-mini-preview {
    display: grid;
    height: 78px;
    margin-bottom: 16px;
    overflow: hidden;
    border: 1px solid #d6dce5;
    border-radius: 8px;
    background: #f8fafc;
}

.interface-style-mini-preview.classic { grid-template-rows: 18px 1fr; }
.interface-style-mini-preview.classic::before { content: ""; background: #fff; border-bottom: 1px solid #d6dce5; }
.interface-style-mini-preview.classic::after { content: ""; margin: 12px; border: 1px solid #d6dce5; border-radius: 5px; background: #fff; }
.interface-style-mini-preview.workspace { grid-template-columns: 24px 1fr; }
.interface-style-mini-preview.workspace::before { content: ""; background: #171c24; }
.interface-style-mini-preview.workspace::after { content: ""; margin: 12px; border: 1px solid #d6dce5; border-radius: 5px; background: #fff; }

.interface-style-modal-choice strong { font-size: 17px; }
.interface-style-modal-choice > span:last-child { display: block; margin-top: 8px; color: #64748b; font-size: 12px; line-height: 1.5; }
html.dark .interface-style-modal-choice > span:last-child { color: #94a3b8; }

body.interface-style-switching::after {
    content: "Switching interface…";
    position: fixed;
    inset: 0;
    z-index: 20000;
    display: grid;
    place-items: center;
    color: #fff;
    background: rgba(15, 23, 42, .82);
    font-size: 14px;
    font-weight: 800;
}

@media (max-width: 640px) {
    .interface-style-grid,
    .interface-style-modal-grid { grid-template-columns: 1fr; }
    .interface-style-dialog { padding: 20px; }
    .interface-style-modal-choice { min-height: 154px; }
    .interface-style-mini-preview { height: 58px; }
}

@media (prefers-reduced-motion: reduce) {
    .interface-style-option,
    .interface-style-modal-choice { transition: none; }
}