/* Floating theme picker — subtle, non-intrusive */

.webapp-theme-fab {
    position: fixed;
    right: max(14px, env(safe-area-inset-right));
    bottom: calc(14px + env(safe-area-inset-bottom));
    z-index: 99980;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    background: rgba(28, 28, 30, 0.72);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    color: rgba(255, 255, 255, 0.82);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0.62;
    transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.webapp-theme-fab .material-icons-round {
    font-size: 20px;
}

.webapp-theme-fab:hover,
.webapp-theme-fab:focus-visible {
    opacity: 1;
    transform: scale(1.04);
    background: rgba(44, 44, 46, 0.88);
    outline: none;
}

html[data-webapp-design="ios"] .webapp-theme-fab {
    bottom: calc(10px + env(safe-area-inset-bottom));
    right: 10px;
    width: 48px;
    height: 48px;
    opacity: 0.88;
    background: var(--wa-tabbar-bg, rgba(38, 38, 38, 0.96));
    border: none;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.55);
}

html[data-webapp-design="ios"] .webapp-theme-option.is-active {
    border-color: rgba(42, 171, 238, 0.45);
    background: rgba(42, 171, 238, 0.12);
}

html[data-webapp-design="ios"] .webapp-theme-option__check {
    color: #2AABEE;
}

html[data-webapp-design="desktop"] .webapp-theme-fab {
    right: 20px;
    bottom: 20px;
}

.webapp-theme-sheet {
    position: fixed;
    inset: 0;
    z-index: 99990;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    pointer-events: none;
}

.webapp-theme-sheet[hidden] {
    display: none !important;
}

.webapp-theme-sheet__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.webapp-theme-sheet__panel {
    position: relative;
    width: min(420px, 100%);
    margin: 0 auto;
    padding: 12px 16px calc(16px + env(safe-area-inset-bottom));
    border-radius: 20px 20px 0 0;
    background: rgba(28, 28, 30, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(100%);
    transition: transform 0.28s cubic-bezier(0.32, 0.72, 0, 1);
    pointer-events: auto;
}

html[data-webapp-design="desktop"] .webapp-theme-sheet {
    align-items: center;
}

html[data-webapp-design="desktop"] .webapp-theme-sheet__panel {
    border-radius: 18px;
    margin: 16px;
    transform: translateY(24px) scale(0.96);
    opacity: 0;
}

.webapp-theme-sheet.is-open {
    pointer-events: auto;
}

.webapp-theme-sheet.is-open .webapp-theme-sheet__backdrop {
    opacity: 1;
}

.webapp-theme-sheet.is-open .webapp-theme-sheet__panel {
    transform: translateY(0);
}

html[data-webapp-design="desktop"] .webapp-theme-sheet.is-open .webapp-theme-sheet__panel {
    transform: translateY(0) scale(1);
    opacity: 1;
}

.webapp-theme-sheet__handle {
    width: 36px;
    height: 4px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    margin: 0 auto 12px;
}

html[data-webapp-design="desktop"] .webapp-theme-sheet__handle {
    display: none;
}

.webapp-theme-sheet__title {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.02em;
}

.webapp-theme-sheet__subtitle {
    margin: 4px 0 14px;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.55);
}

.webapp-theme-sheet__options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.webapp-theme-option {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.04);
    color: #fff;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.webapp-theme-option:hover {
    background: rgba(255, 255, 255, 0.07);
}

.webapp-theme-option.is-active {
    border-color: rgba(10, 132, 255, 0.45);
    background: rgba(10, 132, 255, 0.12);
}

.webapp-theme-option__icon {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

.webapp-theme-option__icon .material-icons-round {
    font-size: 20px !important;
    line-height: 1;
}

.webapp-theme-option__text {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.webapp-theme-option__text strong {
    font-size: 0.88rem;
    font-weight: 600;
}

.webapp-theme-option__text small {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.52);
}

.webapp-theme-option__check {
    font-size: 20px !important;
    color: #0A84FF;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.webapp-theme-option.is-active .webapp-theme-option__check {
    opacity: 1;
}

.webapp-theme-sheet__close {
    width: 100%;
    margin-top: 12px;
    padding: 12px;
    border: none;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
}

.webapp-theme-sheet__close:hover {
    background: rgba(255, 255, 255, 0.14);
}