.echo-offline-screen {
    position: fixed;
    inset: 0;
    z-index: 12000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: max(20px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right))
        max(20px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left));
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.28s ease, visibility 0.28s ease;
}

.echo-offline-screen[hidden] {
    display: flex;
}

.echo-offline-screen--visible {
    pointer-events: auto;
    opacity: 1;
    visibility: visible;
}

.echo-offline-screen__backdrop {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(99, 102, 241, 0.18), transparent 55%),
        radial-gradient(ellipse 70% 50% at 80% 100%, rgba(168, 85, 247, 0.12), transparent 50%),
        rgba(7, 7, 13, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.echo-offline-screen__panel {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: min(100%, 360px);
    gap: 14px;
}

.echo-offline-page {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: max(20px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right))
        max(20px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left));
    font-family: var(--font, 'IBM Plex Sans Arabic', system-ui, sans-serif);
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(99, 102, 241, 0.18), transparent 55%),
        radial-gradient(ellipse 70% 50% at 80% 100%, rgba(168, 85, 247, 0.12), transparent 50%),
        var(--bg-primary, #0a0a0f);
    color: var(--text-primary, #f0f0f5);
}

.echo-offline-screen__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.echo-offline-screen__desc {
    font-size: 0.9rem;
    line-height: 1.65;
    color: var(--text-secondary);
    max-width: 32ch;
}

.echo-offline-screen__retry {
    margin-top: 8px;
    min-width: 168px;
    padding: 12px 22px;
    border: none;
    border-radius: var(--radius-lg, 16px);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    cursor: pointer;
    background: var(--accent-gradient, linear-gradient(135deg, #a855f7 0%, #6366f1 50%, #06b6d4 100%));
    box-shadow: 0 8px 28px var(--accent-glow, rgba(99, 102, 241, 0.3));
    transition: transform var(--transition, 0.2s ease), opacity var(--transition, 0.2s ease);
}

.echo-offline-screen__retry:hover:not(:disabled) {
    transform: translateY(-1px);
}

.echo-offline-screen__retry:disabled {
    opacity: 0.65;
    cursor: wait;
}

body.echo-offline-active {
    overflow: hidden;
}