/* 2FA Tool · sheets, dialogs and popovers */
dialog.tt-sheet {
    position: fixed;
    inset: 0;
    z-index: 800;
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--tt-label);
    overflow: hidden;
}
dialog.tt-sheet:not([open]) { display: none; }
dialog.tt-sheet::backdrop { background: transparent; }

.tt-sheet__scrim {
    position: absolute;
    inset: 0;
    background: var(--tt-scrim);
    opacity: 0;
    transition: opacity var(--tt-dur-3) var(--tt-ease);
}
.tt-sheet.is-open .tt-sheet__scrim { opacity: 1; }
.tt-sheet:not(.is-open) .tt-sheet__scrim { transition-duration: var(--tt-dur-2); }

.tt-sheet__panel {
    position: absolute;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--tt-glass-sheet);
    -webkit-backdrop-filter: blur(var(--tt-blur-strong)) saturate(190%);
    backdrop-filter: blur(var(--tt-blur-strong)) saturate(190%);
    border: 1px solid var(--tt-glass-border);
    box-shadow: inset 0 1px 0 var(--tt-glass-hi), 0 0 0 .5px var(--tt-glass-edge), var(--tt-shadow-3);
    outline: none;
}
.tt-sheet__head {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: none;
    min-height: 58px;
    padding: 12px 58px 8px;
}
.tt-sheet__title { font-size: 17px; font-weight: 650; letter-spacing: -.01em; text-align: center; line-height: 1.3; }
.tt-sheet__close {
    position: absolute;
    top: 50%;
    right: 14px;
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    margin-top: -14px;
    border-radius: 50%;
    background: var(--tt-fill);
    color: var(--tt-label-2);
    transition: background-color var(--tt-dur-2), transform var(--tt-dur-1);
}
.tt-sheet__close .tt-ico { width: 16px; height: 16px; stroke-width: 2.6; }
.tt-sheet__close:active { transform: scale(.9); }
@media (hover: hover) { .tt-sheet__close:hover { background: var(--tt-fill-3); color: var(--tt-label); } }
.tt-sheet__body {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    padding: 6px 20px 18px;
}
.tt-sheet__foot { display: flex; gap: 10px; flex: none; padding: 10px 20px 18px; }
.tt-sheet__foot > .tt-btn { flex: 1 1 0; min-width: 0; }
.tt-sheet__grab { display: none; }

.tt-sheet__hero { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 2px 8px 18px; text-align: center; }
.tt-sheet__hero p { max-width: 380px; font-size: 14.5px; line-height: 1.6; color: var(--tt-label-2); }
.tt-sheet__hero p b { color: var(--tt-label); font-weight: 650; }
.tt-sheet__badge {
    display: grid;
    place-items: center;
    width: 62px;
    height: 62px;
    border-radius: 20px;
    color: var(--tt-accent);
    background: linear-gradient(160deg, var(--tt-accent-soft-2), var(--tt-accent-soft));
    box-shadow: inset 0 1px 0 var(--tt-glass-hi);
}
.tt-sheet__badge .tt-ico { width: 32px; height: 32px; stroke-width: 1.8; }
.tt-sheet__badge--danger { color: var(--tt-red); background: rgba(255, 59, 48, .13); }
.tt-sheet__where { display: inline-flex; align-items: center; gap: 6px; font-size: 13px !important; color: var(--tt-label-3) !important; }
.tt-sheet__where:empty { display: none; }

/* phone: floating bottom sheet with drag-to-dismiss */
@media (max-width: 899.98px) {
    .tt-sheet .tt-toasts { top: calc(12px + var(--tt-safe-t)); bottom: auto; flex-direction: column; }
    .tt-sheet .tt-toast { transform: translateY(-10px) scale(.96); }
    .tt-sheet .tt-toast.is-in { transform: none; }
    .tt-sheet__panel {
        left: calc(8px + var(--tt-safe-l));
        right: calc(8px + var(--tt-safe-r));
        bottom: calc(8px + max(var(--tt-safe-b), var(--tt-kb, 0px)));
        max-height: calc(100% - var(--tt-safe-t) - max(var(--tt-safe-b), var(--tt-kb, 0px)) - 28px);
        border-radius: 34px;
        transform: translate3d(0, calc(100% + 60px), 0);
        transition: transform var(--tt-dur-4) var(--tt-ease-sheet);
        will-change: transform;
    }
    .tt-sheet.is-open .tt-sheet__panel { transform: translate3d(0, var(--drag, 0px), 0); }
    .tt-sheet:not(.is-open) .tt-sheet__panel { transition-duration: 280ms; transition-timing-function: cubic-bezier(.4, 0, 1, 1); }
    .tt-sheet.is-dragging .tt-sheet__panel { transition: none; }
    .tt-sheet__grab {
        display: block;
        position: absolute;
        top: 0;
        left: 50%;
        z-index: 3;
        width: 120px;
        height: 22px;
        margin-left: -60px;
        touch-action: none;
        cursor: grab;
    }
    .tt-sheet__grab::after {
        content: "";
        position: absolute;
        top: 7px;
        left: 50%;
        width: 38px;
        height: 5px;
        margin-left: -19px;
        border-radius: 3px;
        background: var(--tt-fill-3);
    }
    .tt-sheet__head { touch-action: none; padding-top: 18px; }
    .tt-sheet__body { padding: 4px 16px 16px; }
    .tt-sheet__foot { padding: 8px 16px 16px; }
}

/* desktop: centered modal */
@media (min-width: 900px) {
    .tt-sheet .tt-toasts { top: calc(16px + var(--tt-safe-t)); }
    .tt-sheet__panel {
        top: 50%;
        left: 50%;
        width: min(500px, calc(100vw - 48px));
        max-height: min(86vh, 800px);
        border-radius: 30px;
        opacity: 0;
        transform: translate(-50%, -47%) scale(.965);
        transition: transform var(--tt-dur-3) var(--tt-ease-out), opacity var(--tt-dur-2) var(--tt-ease);
    }
    .tt-sheet.is-open .tt-sheet__panel { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    .tt-sheet:not(.is-open) .tt-sheet__panel { transition-duration: 220ms, 180ms; }
    .tt-sheet__panel--compact { width: min(420px, calc(100vw - 48px)); }
    .tt-sheet__panel--wide { width: min(620px, calc(100vw - 48px)); }
    .tt-sheet__foot { padding-bottom: 22px; }
}

/* ---------- popover menus (desktop top bar) ---------- */
.tt-popwrap { position: relative; }
.tt-iconbtn--label { width: auto; padding: 0 10px 0 9px; gap: 4px; border-radius: var(--tt-r-pill); display: inline-flex; align-items: center; }
.tt-iconbtn__tag { font-size: 12px; font-weight: 700; color: var(--tt-label-2); }
.tt-pop {
    position: absolute;
    top: calc(100% + 10px);
    right: -6px;
    z-index: 90;
    min-width: 210px;
    max-height: min(60vh, 420px);
    overflow-y: auto;
    padding: 6px;
    border-radius: 18px;
    background: var(--tt-glass-sheet);
    -webkit-backdrop-filter: blur(var(--tt-blur-strong)) saturate(190%);
    backdrop-filter: blur(var(--tt-blur-strong)) saturate(190%);
    border: 1px solid var(--tt-glass-border);
    box-shadow: inset 0 1px 0 var(--tt-glass-hi), 0 0 0 .5px var(--tt-glass-edge), var(--tt-shadow-3);
    transform-origin: top right;
    animation: tt-pop-in var(--tt-dur-2) var(--tt-ease-out) both;
}
@keyframes tt-pop-in { from { opacity: 0; transform: scale(.92) translateY(-4px); } to { opacity: 1; transform: none; } }
.tt-pop__item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    min-height: 40px;
    padding: 6px 10px;
    border-radius: 11px;
    text-align: left;
    font-size: 14.5px;
    color: var(--tt-label);
    transition: background-color var(--tt-dur-1);
}
.tt-pop__item > .tt-ico:first-child { width: 18px; height: 18px; color: var(--tt-label-2); }
.tt-pop__text { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.25; }
.tt-pop__text small { font-size: 11.5px; color: var(--tt-label-3); }
.tt-pop__tick { width: 16px; height: 16px; color: var(--tt-accent); stroke-width: 2.6; opacity: 0; }
.tt-pop__item[aria-checked="true"] .tt-pop__tick { opacity: 1; }
.tt-pop__item:hover, .tt-pop__item:focus-visible { background: var(--tt-fill); outline: none; }