/* core/components/pwa_update/pwa_update.css — 255-Н
   Тактичный update-тост PWA: «Доступна новая версия · Обновить».
   Class-based (¬inline-style) → совместим со Strict CSP `style-src 'self'`.
   Glass-surface консистентен confirm_dialog / detail_modal. Safe-area aware (mobile).
   Cascade: unlayered (тост — top-level shell-chrome, specificity достаточна). */

.pwa-update-toast {
    position: fixed;
    left: 50%;
    bottom: calc(var(--space-md, 16px) + env(safe-area-inset-bottom, 0px));
    z-index: var(--z-toast, 12000);
    display: flex;
    align-items: center;
    gap: var(--space-sm, 8px);
    max-width: min(100% - 2 * var(--space-md, 16px), 440px);
    padding: var(--space-sm, 8px) var(--space-sm, 8px) var(--space-sm, 8px) var(--space-md, 16px);
    background: var(--surface-overlay-bg); /* 260-Н: brand-aware (латунь↔неон), ¬хардкод-неон */
    border: 1px solid rgba(var(--text-main-rgb, 255 255 255), 0.12);
    border-radius: var(--radius-lg, 16px);
    color: var(--text-main, #fff);
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
    box-shadow:
        0 24px 64px rgba(var(--black-rgb, 0 0 0), 0.6),
        0 0 0 1px rgba(var(--text-main-rgb, 255 255 255), 0.04) inset;
    font-family: var(--font-body, system-ui, sans-serif);
    /* Starting state: за нижней кромкой + прозрачный */
    transform: translate(-50%, calc(100% + var(--space-lg, 24px)));
    opacity: 0;
    transition: opacity 0.25s ease, transform 0.25s ease;
    pointer-events: auto;
}

.pwa-update-toast.is-visible {
    transform: translate(-50%, 0);
    opacity: 1;
}

.pwa-update-toast__text {
    font-size: var(--fs-step--1, 0.88rem);
    line-height: 1.3;
    color: rgba(var(--text-main-rgb, 255 255 255), 0.85);
    white-space: nowrap;
}

.pwa-update-toast__btn {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    padding: 0 var(--space-md, 16px);
    background: rgba(var(--accent-primary-rgb, 213 0 133), 0.18);
    color: var(--text-main, #fff);
    border: 1px solid rgba(var(--accent-primary-rgb, 213 0 133), 0.45);
    border-radius: var(--radius-xs, 8px);
    cursor: pointer;
    font-family: var(--font-body, system-ui, sans-serif);
    font-size: var(--fs-step--1, 0.88rem);
    font-weight: 600;
    line-height: 1;
    transition: background 0.15s, border-color 0.15s, box-shadow 0.15s, filter 0.15s;
}

.pwa-update-toast__btn:hover {
    background: rgba(var(--accent-primary-rgb, 213 0 133), 0.28);
    border-color: rgba(var(--accent-primary-rgb, 213 0 133), 0.65);
}

.pwa-update-toast__btn:focus-visible,
.pwa-update-toast__btn:focus {
    outline: none;
    border-color: var(--accent-primary, #d50085);
    box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb, 213 0 133), 0.25);
}

.pwa-update-toast__btn:disabled {
    opacity: 0.6;
    cursor: default;
}

.pwa-update-toast__dismiss {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    background: transparent;
    color: rgba(var(--text-main-rgb, 255 255 255), 0.55);
    border: 0;
    border-radius: var(--radius-xs, 8px);
    cursor: pointer;
    font-size: var(--fs-step--1, 0.88rem);
    line-height: 1;
    transition: color 0.15s, background 0.15s;
}

.pwa-update-toast__dismiss:hover {
    color: var(--text-main, #fff);
    background: rgba(var(--text-main-rgb, 255 255 255), 0.08);
}

.pwa-update-toast__dismiss:focus-visible,
.pwa-update-toast__dismiss:focus {
    outline: none;
    color: var(--text-main, #fff);
    box-shadow: 0 0 0 2px rgba(var(--accent-secondary-rgb, 0 153 255), 0.4);
}

/* Узкий экран — тост на всю ширину, текст может переноситься */
@media (max-width: 600px) {
    .pwa-update-toast {
        left: var(--space-md, 16px);
        right: var(--space-md, 16px);
        max-width: none;
        transform: translateY(calc(100% + var(--space-lg, 24px)));
    }
    .pwa-update-toast.is-visible {
        transform: translateY(0);
    }
    .pwa-update-toast__text {
        white-space: normal;
    }
}

@media (prefers-reduced-motion: reduce) {
    .pwa-update-toast {
        transition: opacity 0.2s ease;
        transform: translate(-50%, 0);
    }
    .pwa-update-toast.is-visible {
        transform: translate(-50%, 0);
    }
    @media (max-width: 600px) {
        .pwa-update-toast,
        .pwa-update-toast.is-visible {
            transform: translateY(0);
        }
    }
}