.qr-login-backdrop {
    position: fixed;
    inset: 0;
    z-index: 10020;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(5, 9, 18, .72);
    backdrop-filter: blur(8px);
    opacity: 0;
    transition: opacity .16s ease;
}

.qr-login-backdrop.open { opacity: 1; }

.qr-login-dialog {
    width: min(440px, 100%);
    max-height: calc(100vh - 32px);
    overflow: auto;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
    box-shadow: 0 24px 70px rgba(0, 0, 0, .34);
}

.qr-login-dialog > header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.qr-login-dialog > header span {
    color: var(--muted);
    font-size: 11px;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.qr-login-dialog h2 {
    margin: 3px 0 0;
    font-size: 20px;
}

.qr-login-code {
    position: relative;
    width: min(292px, 82vw);
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    margin: 20px auto 14px;
    padding: 12px;
    overflow: hidden;
    border-radius: 12px;
    background: #fff;
}

.qr-login-code-content {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    transition: filter .16s ease, opacity .16s ease;
}

.qr-login-code.is-expired .qr-login-code-content {
    filter: grayscale(1);
    opacity: .18;
}

.qr-login-refresh-overlay {
    position: absolute;
    inset: 50% auto auto 50%;
    z-index: 3;
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: #111827;
    box-shadow: none;
    transform: translate(-50%, -50%);
    cursor: pointer;
    transition: color .14s ease, transform .14s ease;
}

.qr-login-refresh-overlay[hidden] { display: none; }
.qr-login-refresh-overlay:hover {
    color: #000;
    transform: translate(-50%, -50%) rotate(14deg);
}
.qr-login-refresh-overlay:active {
    transform: translate(-50%, -50%) rotate(14deg) scale(.92);
}
.qr-login-refresh-overlay:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--accent) 42%, transparent);
    outline-offset: 2px;
}
.qr-login-refresh-overlay svg {
    width: 31px;
    height: 31px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.qr-login-code-content a,
.qr-login-code-content svg,
.qr-login-code-content canvas,
.qr-login-code-content img {
    display: block;
    max-width: 100%;
    max-height: 100%;
}

.qr-login-svg {
    width: 100%;
    height: 100%;
}

.qr-login-loader {
    width: 34px;
    height: 34px;
    border: 3px solid #d8dee9;
    border-top-color: #4f6ee8;
    border-radius: 50%;
    animation: qr-spin .8s linear infinite;
}

.qr-login-error-icon {
    width: 56px;
    height: 56px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: #fee2e2;
    color: #b91c1c;
    font-size: 28px;
    font-weight: 700;
}

.qr-login-state { text-align: center; }
.qr-login-state strong {
    display: block;
    font-size: 16px;
}

.qr-login-state > span {
    display: block;
    margin-top: 6px;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
}

.qr-login-state p {
    margin: 10px 0 0;
    color: var(--muted);
    line-height: 1.5;
}

.qr-login-dialog > footer {
    flex-wrap: wrap;
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.qr-login-dialog > footer [hidden] {
    display: none;
}

.telegram-auth-mode-card { grid-column: 1 / -1; }

.auth-mode-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.auth-mode-option {
    display: flex;
    gap: 12px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface-2);
    cursor: pointer;
}

.auth-mode-option:has(input:checked) {
    border-color: color-mix(in srgb, var(--accent) 65%, var(--line));
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 13%, transparent);
}

.auth-mode-option input { margin-top: 3px; }
.auth-mode-option span { display: grid; }

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

@media (max-width: 640px) {
    .qr-login-backdrop {
        align-items: end;
        padding: 0;
    }

    .qr-login-dialog {
        width: 100%;
        max-height: 94vh;
        padding: 16px;
        border-radius: 14px 14px 0 0;
    }

    .qr-login-code {
        width: min(270px, 76vw);
        margin-top: 16px;
    }

    .auth-mode-options { grid-template-columns: 1fr; }

    .qr-login-dialog > footer {
        position: sticky;
        bottom: -16px;
        padding: 12px 0 4px;
        background: var(--surface);
    }
}