.mobile-menu-btn,
.mobile-auth-item {
    display: none;
}

@media (max-width: 900px) {
    body > header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        row-gap: 0;
        padding: 10px 16px;
    }

    body > header img.brand-logo {
        width: 34px;
        height: 34px;
    }

    body > header .header-brand {
        gap: 10px;
        min-width: 0;
    }

    body > header .header-brand span {
        font-size: 18px;
    }

    body > header .header-auth {
        gap: 10px;
        justify-content: flex-end;
        flex-shrink: 0;
    }

    body > header .header-auth .auth-btn.logged-in {
        display: none;
    }

    body > header .header-auth .auth-btn {
        padding: 8px 14px;
        font-size: 13px;
    }

    body > header .lang-btn {
        height: 38px;
    }

    body > header .user-avatar {
        width: 36px;
        height: 36px;
    }

    .mobile-menu-btn {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 5px;
        width: 40px;
        height: 38px;
        padding: 0;
        border-radius: 10px;
        border: 1px solid rgba(255, 255, 255, 0.15);
        background: rgba(255, 255, 255, 0.04);
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }

    .mobile-menu-btn span {
        display: block;
        width: 18px;
        height: 2px;
        border-radius: 2px;
        background: #fff;
        transition: transform 0.25s ease, opacity 0.2s ease;
    }

    body > header.menu-open .mobile-menu-btn span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    body > header.menu-open .mobile-menu-btn span:nth-child(2) {
        opacity: 0;
    }

    body > header.menu-open .mobile-menu-btn span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    body > header .header-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        display: none;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        flex-wrap: nowrap;
        gap: 0;
        padding: 4px 16px 14px;
        background: var(--bg-dark, #0b0b0f);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        box-shadow: 0 24px 40px rgba(0, 0, 0, 0.55);
    }

    body > header.menu-open .header-nav {
        display: flex;
        animation: mobileMenuIn 0.2s ease;
    }

    @keyframes mobileMenuIn {
        from { opacity: 0; transform: translateY(-6px); }
        to { opacity: 1; transform: translateY(0); }
    }

    body > header .header-nav .nav-dot {
        display: none;
    }

    body > header .header-nav .nav-videos-group {
        display: none;
    }

    body > header .header-nav .nav-videos-group.visible {
        display: block;
    }

    body > header .header-nav a {
        display: block;
        font-size: 17px;
        padding: 15px 6px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    }

    body > header .header-nav a::after {
        display: none;
    }

    body > header .header-nav a.active {
        color: var(--primary, #e67e22);
    }

    body > header.is-logged .mobile-auth-item {
        display: block;
        margin-top: 12px;
        width: 100%;
        padding: 13px;
        border-radius: 12px;
        border: 1px solid rgba(255, 255, 255, 0.18);
        background: rgba(255, 255, 255, 0.04);
        color: #fff;
        font-family: inherit;
        font-size: 15px;
        font-weight: 700;
        cursor: pointer;
    }

    .tournament-row,
    .tournament-row.reverse {
        align-items: stretch;
        gap: 22px;
        margin-bottom: 56px;
    }

    .tournament-image {
        flex: none;
        width: 100%;
        height: 230px;
    }

    .tournament-info {
        flex: none;
        width: 100%;
        min-width: 0;
    }

    .tournament-name {
        font-size: 24px;
        overflow-wrap: anywhere;
    }

    .tournament-name-line {
        width: 100% !important;
        max-width: 100%;
        margin-left: 0 !important;
    }

    .tournament-desc {
        font-size: 15px;
        line-height: 1.65;
        max-width: none;
        overflow-wrap: anywhere;
    }

    .tournament-stats {
        gap: 10px;
    }

    .tournament-stat {
        padding: 12px 16px;
        flex: 1 1 calc(50% - 10px);
    }

    .tournament-stat-value {
        font-size: 18px;
    }

    .best-results-title {
        font-size: 30px;
        margin-bottom: 40px;
    }
}